The present disclosure relates to a dye composition, a dye bath solution, and a dying process for polyamide fabric having near-permanent antimicrobial activity provided via zinc content. The dye composition, dye bath solution, and dying process have an enhanced zinc retention performance and is achieved via the use of an anionic aliphatic ester as a component in the dye composition, wherein the dyed fabric demonstrates a zinc retention rate greater than 60%, as measured by ICP-OES.
D06M 11/44 - Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic TableZincatesCadmates
D06M 16/00 - Biochemical treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, e.g. enzymatic
D06P 1/39 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using acid dyes
An AM/AV (antimicrobial/antiviral) brush comprising a brush base, and bristles extending from the brush base. The bristles comprise a polymer composition, comprising aliphatic polyamide comprises a first monomer having from 10 to 14 carbon atoms and a second monomer having 6 carbon atoms, and 1000 ppm by weight or more of zinc. In one embodiment, the aliphatic polyamide has a weight average of viscosity number (VN) of 95 cm3/g or more.
The present disclosure relates to polymer resins, fibers, and yarns with permanent antimicrobial activity, and a method of producing the same. In one embodiment, the antimicrobial polymer resin comprises a polymer having less than 2500 ppm of zinc dispersed within the polymer, less than 1000 ppm of phosphorus, wherein the weight ratio of zinc to phosphorus is at least 1.3:1 or less than 0.64:1.
D01F 6/90 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
D01F 9/08 - Man-made filaments or the like of other substancesManufacture thereofApparatus specially adapted for the manufacture of carbon filaments of inorganic material
A process of making a composite fabric, the process comprising intermingling fibers at a relative angle, and combining a malleable layer with the intermingled fibers to form the composite fabric. The composite fabric demonstrates an elongation rate less than 80 % on both a machine direction and a fill direction as measured via ASTM 5034 (2021) and/or a tensile strength greater than 35 lbf on both the machine and fill directions as measured via ASTM 5034 (2021). The composite also demonstrate optional AM/AV properties.
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
D04H 1/498 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
D04H 1/74 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel
D04H 5/03 - Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling by fluid jet
5.
ALIPHATIC AND SEMI-AROMATIC POLYAMIDES WITH DIMER ACIDS AND DIMER AMINES
A polyamide composition comprising from 45 wt % to 95 wt % of polyamide polymer and from 5 wt % to 55 wt % of a modifier comprising a C18-44 dimer acid or a C18-44 dimer amine or a combination thereof. A number average molecular weight of the polyamide polymer is less than 30,000 g/mol. The polyamide composition has a chemical resistance, as measured by exposure to HCl (10%) for 14 days at 58° C., resulting in a weight loss of less than 3.0 wt %; and a moisture uptake of less than about 2.0 wt % moisture at 95% RH. A process for preparing the polyamide composition is also disclosed.
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
A container, at least a portion of which comprises a continuous fiber and a polymer composition impregnated among the continuous fiber. The polyamide composition comprises a polymer, e.g., a polyamide; an optional flame retardant, e.g., DEPAL; and a crosslinking agent. The container demonstrates a fire containment value such that when an interior of the container is at a temperature greater than 800 °C, an exterior of the portion of the container is at a temperature less than 300 °C and/or the at least a portion of the container achieves a pass on at least one test run as described in UL 2596 (2022), and demonstrates tensile strength greater than 0.3 GPa.
H01M 50/229 - Composite material consisting of a mixture of organic and inorganic materials
H01M 50/24 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
7.
PROCESS FOR DEWATERING AND DECOLORING TRICYANOHEXANE
A process for producing high purity tricyanohexane (TCH), the process comprising: purifying a TCH stream to provide a TCH feed stream; dewatering a purified TCH stream to provide a dry TCH stream comprising less than 50 ppm water; and decoloring the dry TCH stream to provide a high purity TCH stream comprising greater than 99 wt% TCH, less than 50 ppm water, and having a yellowness index less than 150 APHA.
C07C 255/05 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms of an acyclic and saturated carbon skeleton containing at least three cyano groups bound to the carbon skeleton
8.
POLYAMIDE FORMULATIONS FOR IMPROVED NOISE VIBRATION AND HARSHNESS
Provided herein are polyamide compositions including an amorphous polyamide and optionally a semi-crystalline polyamides. The provided compositions are particularly useful as vibration isolators more effective at lower-temperature noise and harshness damping than conventional polyamide compositions. The polyamide composition comprises an amorphous polyamide, at least 2.5 wt% aromatic content, and optionally a semi-crystalline polyamide, and exhibits a maximum viscoelastic loss factor (tan(δ)) at a temperature lower than 72 °C and has a tan(δ) value ranging from 0.08 to 1.40. Also provided are methods for making the provided compositions, and articles that include the provided compositions.
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
Disclosed herein are drilling fluid compositions suitable for use, for example, in drilling a well bore through a subterranean formation and other oil and gas operations. The drilling fluid compositions of the present disclosure include the condensation product of a trifunctional amine and a fatty acid and an oil base fluid. The present disclosure also described processes for preparing drilling fluid compositions.
A polyamide composition comprising 50 to 90 % by weight of an aliphatic polyamide comprising a dimer monomer and 3 to 40 % by weight of a non-halogen flame retardant composition. The non-halogen flame retardant composition comprises a polyalcohol, and one or more phosphorous-containing flame retardants, nitrogen-containing flame retardants or combinations thereof, wherein the entirety of the components amounting to 100 % by weight.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
This disclosure relates to a process for making flame retardant fibers comprising the steps of combining a flame retardant masterbatch with a polymer to form a polymer composition and forming the flame retardant fibers from the polymer composition. The masterbatch comprises greater than 10 wt % of a nitrogen compound having a melting point less than 400° C.; and a masterbatch polymer, with the weight percentages based on the total weight of the masterbatch. The flame retardant fibers pass the flame retardancy standards of ASTM D6413 (current year).
C08F 283/04 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to polycarbonamides, polyesteramides or polyimides
C08K 3/105 - Compounds containing metals of Groups 1 to 3 or of Groups 11 to 13 of the Periodic Table
12.
FIBERS AND FABRICS WITH NITROGEN-CONTAINING ADDITIVES
This disclosure relates to a process for making flame retardant fibers comprising the steps of combining a flame retardant masterbatch with a polymer to form a polymer composition and forming the flame retardant fibers from the polymer composition. The masterbatch comprises greater than 10 wt% of a nitrogen compound having a melting point less than 400 °C; and a masterbatch polymer, with the weight percentages based on the total weight of the masterbatch. The flame retardant fibers pass the flame retardancy standards of ASTM D6413 (current year).
This disclosure relates to a protective fabric having improved chem/bio repellant properties, comprising a nonwoven matrix comprising fibers and metal oxide particles dispersed among the fibers. The nonwoven matrix has an oxide particle retention rate greater than 5%, and the protective fabric demonstrates a flame retardant index greater than 3, as measured in accordance with ISO 14116:2008.
D04H 1/413 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties containing granules other than absorbent substances
D04H 1/46 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
D04H 1/492 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
D04H 3/105 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
D04H 3/11 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
This disclosure relates to a protective fabric having improved chem/bio repellant properties, comprising a nonwoven matrix comprising fibers and metal oxide particles dispersed among the fibers. The nonwoven matrix has an oxide particle retention rate greater than 5%, and the protective fabric demonstrates a flame retardant index greater than 3, as measured in accordance with ISO 14116:2008.
D06M 11/46 - Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic TableTitanatesZirconatesStannatesPlumbates
A62B 17/00 - Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
D06M 11/45 - Oxides or hydroxides of elements of Groups 3 or 13 of the Periodic TableAluminates
15.
METHODS FOR STABILIZING WATER SENSITIVE CLAYS AND MIGRATING FINES IN SUBTERRANEAN FORMATIONS
Clay stabilization compositions include one or a plurality of triamino compounds and/or derivatives thereof, fluids containing an effective amount of the clay stabilization compositions and methods for making and using same.
C07C 22/04 - Cyclic compounds containing halogen atoms bound to an acyclic carbon atom having unsaturation in the rings containing six-membered aromatic rings
A polyamide composition comprising from 15-70 wt % of a first polyamide; from 5-40 wt % of a second polyamide; from 0.01-10 wt % of a stabilizer comprising a lanthanoid-based compound; from 0.01-10 wt % of a first stabilizer comprising a copper-based compound; from 0.01-10 wt % of a second stabilizer comprising a copper-based compound; and from 20-65 wt % filler.
A polyamide composition comprising from 15-70 wt% of a first polyamide; from 5-40 wt% of a second polyamide; from 0.01-10 wt% of a stabilizer comprising a lanthanoid-based compound; from 0.01-10 wt% of a first stabilizer comprising a copper-based compound; from 0.01-10 wt% of a second stabilizer comprising a copper-based compound; and from 20-65 wt% filler.
A flame retardant polyamide composition comprising a synergistic combination of an epoxy-terminated brominated epoxy polymer with a tribromophenol end-capped brominated epoxy polymer. The polyamide compositions have excellent resistance to heat and good elongation-at-break properties without the presence of decabromodiphenyl ethane.
A flame retardant polyamide composition comprising a synergistic combination of an epoxy-terminated brominated epoxy polymer with a tribromophenol end-capped brominated epoxy polymer. The polyamide compositions have excellent resistance to heat and good elongation-at-break properties without the presence of decabromodiphenyl ethane.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
20.
PROCESS FOR REGENERATING AMMONIATION DEHYDRATION CATALYST
A process for regenerating a deactivated catalyst for preparing 6-aminocapronitrile, the process comprising contacting a deactivated aluminosilicate zeolite catalyst comprising a nitrogen-containing contaminant with an oxidant to provide a regenerated catalyst comprising less than 0.5% contaminant and a regeneration by-product stream comprising nitrogen.
C07C 255/24 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms containing cyano groups and singly-bound nitrogen atoms, not being further bound to other hetero atoms, bound to the same saturated acyclic carbon skeleton
A process for converting caprolactam to aminocapronitrile (ACN), the process comprising contacting a caprolactam feed stream with ammonia to produce a first crude product stream; separating the first crude product stream to produce an intermediate product stream comprising ACN and a caprolactam recovery stream; and purifying the intermediate product stream to produce a purified product stream comprising greater than 95 wt% aminocapronitrile.
C07C 255/24 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms containing cyano groups and singly-bound nitrogen atoms, not being further bound to other hetero atoms, bound to the same saturated acyclic carbon skeleton
A process for converting caprolactam to aminocapronitrile (ACN), the process comprising contacting a caprolactam feed stream with ammonia to produce a first crude product stream; separating the first crude product stream to produce an intermediate product stream comprising ACN and caprolactam recovery stream; and purifying the intermediate product stream to produce a purified product stream comprising greater than 95 wt % aminocapronitrile.
A process for regenerating a deactivated catalyst, the process comprising contacting a deactivated aluminosilicate zeolite catalyst comprising a nitrogen-containing contaminant with an oxidant to provide a regenerated catalyst comprising less than 0.5% contaminant and a regeneration by-product stream comprising nitrogen.
A process for converting caprolactam to aminocapronitrile, the process comprising contacting a caprolactam feed with ammonia and an aluminosilicate zeolite catalyst to produce an aminocapronitrile product, wherein the catalyst comprises less than 5 wt. % of an active metal, and wherein conversion is greater than 50% and selectivity for aminocapronitrile is greater than 91%.
C07C 209/68 - Preparation of compounds containing amino groups bound to a carbon skeleton from amines, by reactions not involving amino groups, e.g. reduction of unsaturated amines, aromatisation, or substitution of the carbon skeleton
C07C 253/00 - Preparation of carboxylic acid nitriles
A process for converting caprolactam to aminocapronitrile, the process comprising contacting a caprolactam feed with ammonia and an aluminosilicate zeolite catalyst to produce an aminocapronitrile product, wherein the catalyst comprises less than 5 wt.% of an active metal, and wherein conversion is greater than 50% and selectivity for aminocapronitrile is greater than 91%.
C07C 255/24 - Carboxylic acid nitriles having cyano groups bound to acyclic carbon atoms containing cyano groups and singly-bound nitrogen atoms, not being further bound to other hetero atoms, bound to the same saturated acyclic carbon skeleton
C07C 209/48 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of carboxylic acids or esters thereof in presence of ammonia or amines, or by reduction of nitriles, carboxylic acid amides, imines or imino-ethers by reduction of nitriles
A flame retardant polyamide composition comprising a polyamide, a non-halogenated, phosphinate-based flame retardant, an impact modifier comprising an alkene/acrylate copolymer/terpolymer, a flame retardant synergist and an optional reinforcing agent. The flame retardant polyamide composition demonstrates a passing value for a glow wire end product test as measured by IEC 60695-2-11, a passing value for a glow wire ignition test as measured by IEC-60695-2-13:201; a passing value (V0 rating) for UL94 performance at 0.8 mm; and an elongation at break greater than 2.7%, as measured by to ISO Test No. 527:2012.
A flame retardant polyamide composition comprising a polyamide, a non-halogenated, phosphinate-based flame retardant, an impact modifier comprising an alkene/acrylate copolymer/terpolymer, a flame retardant synergist and an optional reinforcing agent. The flame retardant polyamide composition demonstrates a passing value for a glow wire end product test as measured by IEC 60695-2-11, a passing value for a glow wire ignition test as measured by IEC-60695-2-13:201; a passing value (V0 rating) for UL94 performance at 0.8 mm; and an elongation at break greater than 2.7%, as measured by to ISO Test No. 527:2012.
The present disclosure relates to a nonwoven polyamide structure having antimicrobial properties comprising: nonwoven polyamide fibers comprising less than 4000 ppm zinc dispersed within the nonwoven polyamide fibers; and less than 2000 ppm phosphorus. The fibers have an average fiber diameter of less than 25 microns; and the polyamide structure demonstrates a Staphylococcus aureus reduction of at least 90%, as measured by ISO 20743-13.
D01D 5/098 - Melt-spinning methods with simultaneous stretching
D01F 8/12 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one polyamide as constituent
An AM/AV fabric, comprising base fibers comprising a base polymer composition comprising a base polymer; and short AM/AV fibers comprising an AM/AV polymer composition comprising an AM/AV polymer and an AM/AV compound. The fabric has a charge and demonstrates a particle efficiency greater than 20% when measured in accordance with TSI 8130A test system at 10.5 ft/min face velocity, and a Klebsiella pneumoniae efficacy log reduction greater than 1.5, as measured in accordance with ASTM E3160 (2018).
An AM/ AV fabric, comprising base fibers comprising a base polymer composition comprising a base polymer; and short AM/ AV fibers comprising an AM/ AV polymer composition comprising an AM/ AV polymer and an AM/ AV compound. The fabric has a charge and demonstrates a particle efficiency greater than 20% when measured in accordance with TSI 8130A test system at 10.5 ft/min face velocity, and a Klebsiella pneumoniae efficacy log reduction greater than 1.5, as measured in accordance with ASTM E3160 (2018).
D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
An antistripping composition, comprising a first triamine compound or a second amine compound, and less than 1 wt% of a nitrile compound. When the antistripping composition is used in a bitumen composition, the bitumen composition demonstrates 50% or more retained coating as measured according to AASHTO T 283 (2022), and a tensile strength ratio of at least 80% when measured according to ASTM D 3625 (2020).
Provided herein are processes for purifying TCH in a feed stream, such as an adiponitrile process stream. The processes include a first separating step of separating the adiponitrile process stream to form a first overhead stream comprising low-boiling components and high-boiling components and a first bottoms stream comprising high-boiling components. The processes also include a second separating step of separating the first overhead stream in one or more distillation columns to form a lights stream comprising low-boiling components, a heavies stream comprising high-boiling components, and a TCH stream.
An antistripping composition, comprising a first triamine compound or a second amine compound, and less than 1 wt% of a nitrile compound. When the antistripping composition is used in a bitumen composition, the bitumen composition demonstrates 50% or more retained coating as measured according to AASHTO T 283 (2022), and a tensile strength ratio of at least 80% when measured according to ASTM D 3625 (2020).
An antistripping composition, comprising a first triamine compound or a second amine compound, and less than 1 wt % of a nitrile compound. When the antistripping composition is used in a bitumen composition, the bitumen composition demonstrates 50% or more retained coating as measured according to AASHTO T 283 (2022), and a tensile strength ratio of at least 80% when measured according to ASTM D 3625 (2020).
A copolyamide composition comprising a statistical copolyamide containing 70-99 wt % of diamine and dicarboxylic acid repeat units and 1-30 wt % of lactam or AA-BB repeat units, whereby incorporation of the comonomer lactam or AA-BB unit reduces the crystallization rate (longer crystallization times) while maintaining (1) high melting point, (2) low potential plate out, (3) low oxygen permeation, (4) high tensile strength and (5) puncture/tear resistance.
C08G 69/36 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines, and polycarboxylic acids
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
A method of producing a polyamide elastomer comprising feeding a salt solution having a solids content of greater than or equal to 80% to a reactor having a phosphorous containing catalyst having a phosphorous level from 5 to 1000 part by million based on the total weight of the catalyst, feeding a polyether amine to the reactor, and reducing the pressure in the reactor once a target temperature is reached to polymerize the salt solution and the polyether amine to form the polyamide elastomer. The polyamide elastomer has particular uses as a cable tie and demonstrates improved cold-temperature applications while maintaining high strength, good flammability rating, and excellent processability.
This disclosure relates to a process for producing treated AM/AV fibers comprising treating, with an alkali composition, base AM/AV fibers comprising a polymer composition comprising a polymer and an AM/AV compound to form treated AM/AV fibers. The treated AM/AV fibers demonstrate a Klebsiella pneumonia log reduction greater than 1.5, as determined via ISO20743:2013.
A method of producing a polyamide elastomer comprising feeding a salt solution having a solids content of greater than or equal to 80% to a reactor having a phosphorous containing catalyst having a phosphorous level from 5 to 1000 part by million based on the total weight of the catalyst, feeding a polyether amine to the reactor, and reducing the pressure in the reactor once a target temperature is reached to polymerize the salt solution and the polyether amine to form the polyamide elastomer. The polyamide elastomer has particular uses as a cable tie and demonstrates improved cold-temperature applications while maintaining high strength, good flammability rating, and excellent processability.
D06M 11/38 - Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
D06M 11/40 - Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table combined with, or in absence of, mechanical tension, e.g. slack mercerising
D06M 16/00 - Biochemical treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, e.g. enzymatic
D01F 6/60 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyamides
A01N 25/34 - Shaped forms, e.g. sheets, not provided for in any other group of this main group
A01N 55/02 - Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen and sulfur containing metal atoms
A customizable polyamide polymer, in particular Nylon 66, Nylon 6, and copolyamides, having a high molecular weight, excellent color, and low gel content is disclosed. In particular, disclosed is a polymer having a relative viscosity greater than 50 as measured in a 90% strength formic acid solution; consistent viscosity with a standard deviation of less than 1; a gel content no greater than 50 ppm as measured by insolubles larger than 10 micron; an optical defect content of less than 2,000 parts per million (ppm) as measured by optical control system (OCS). The polymer can be made into monofilaments or a multifilament yarn.
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
B29C 48/40 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws, e.g. twin screw extruders
B29C 48/14 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
B29C 48/25 - Component parts, details or accessoriesAuxiliary operations
B29B 13/00 - Conditioning or physical treatment of the material to be shaped
B29B 13/06 - Conditioning or physical treatment of the material to be shaped by drying
B29B 13/02 - Conditioning or physical treatment of the material to be shaped by heating
B29B 9/12 - Making granules characterised by structure or composition
C08G 69/36 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from amino acids, polyamines, and polycarboxylic acids
D01F 6/60 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyamides
A process for producing acetonitrile, the process comprising dehydrating a feedstock stream comprising acetonitrile, acrylonitrile, allyl alcohol, and water (and optionally methanol) in a dehydration (first) column to yield a dehydrated acetonitrile stream comprising acetonitrile and acrylonitrile, less than 1 wt% allyl alcohol, and less than 50 wt% water, and optionally hydrogen cyanide; distilling the dehydrated acetonitrile stream in a lights (second) column to yield a distillate stream comprising lights, and a bottoms stream comprising acetonitrile, acrylonitrile, water, and optionally hydrogen cyanide and acrylonitrile; extracting the distillation bottoms stream in an extraction (third) column to yield a raffinate stream comprising acetonitrile and less than 200 ppm acrylonitrile and an extract stream comprising water and acrylonitrile; purifying the raffinate stream to yield a product acetonitrile stream.
A polyamide composition comprising from 25 wt% to 90 wt% of a first polyamide comprising a non-aromatic polyamide formed from 50 wt% to 90 wt% PA66; from 10-50 wt% of a second polyamide comprising a polyamide copolymer; from 0.01-10 wt% of a first stabilizer comprising a lanthanoid-based compound; from 0.01-10 wt% of a second stabilizer comprising a copper-based compound; and from 0-65 wt% filler.
The present invention provides antimicrobial and/or antiviral properties for polymers and synthetic fibers that have stain resistant properties. The synthetic fiber comprises a polymer, such as a copolymer comprising from 85 to 99.5 percent by weight of a polyamide based on the total weight of the fiber and an aromatic sulfonate or a salt thereof present in a range from 0.5 to 10 percent by weight based on the total weight of the fiber, one or more metal compounds or ions thereof dispersed within the copolymer, and a phosphorus compound.
D01F 6/90 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
An AM/AV fabric comprising base fibers comprising a base polymer composition and AM/AV fibers comprising an AM/AV polymer composition comprising an AM/AV polymer and an AM/AV compound. The base fibers and the AM/AV fibers are intermingled with one another; and the fabric demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particle filtration efficiency greater than 35%.
D01F 6/60 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyamides
D01F 6/06 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
A polyamide composition comprising from 25 wt % to 90 wt % of a first polyamide comprising a non-aromatic polyamide formed from 50 wt % to 90 wt % PA66; from 10-50 wt % of a second polyamide comprising a polyamide copolymer; from 0.01-10 wt % of a first stabilizer comprising a lanthanoid-based compound; from 0.01-10 wt % of a second stabilizer comprising a copper-based compound; and from 0-65 wt % filler.
A process for producing acetonitrile, the process comprising dehydrating a feedstock stream comprising acetonitrile, acrylonitrile, allyl alcohol, and water (and optionally methanol) in a dehydration (first) column to yield a dehydrated acetonitrile stream comprising acetonitrile and acrylonitrile, less than 1 wt % allyl alcohol, and less than 50 wt % water, and optionally hydrogen cyanide; distilling the dehydrated acetonitrile stream in a lights (second) column to yield a distillate stream comprising lights, and a bottoms stream comprising acetonitrile, acrylonitrile, water, and optionally hydrogen cyanide and acrylonitrile; extracting the distillation bottoms stream in an extraction (third) column to yield a raffinate stream comprising acetonitrile and less than 200 ppm acrylonitrile and an extract stream comprising water and acrylonitrile; purifying the raffinate stream to yield a product acetonitrile stream.
Escherichia coliEscherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particle filtration efficiency greater than 35%.
D01F 6/46 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
D01F 6/60 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyamides
D04H 1/56 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
A polyamide composition comprising from 25 wt% to 90 wt% of a first polyamide comprising a non-aromatic polyamide formed from 50 wt% to 90 wt% PA66; from 10-50 wt% of a second polyamide comprising a polyamide copolymer; from 0.01-10 wt% of a first stabilizer comprising a lanthanoid-based compound; from 0.01-10 wt% of a second stabilizer comprising a copper-based compound; and from 0-65 wt% filler.
The present invention provides antimicrobial and/or antiviral properties for polymers and synthetic fibers that have stain resistant properties. The synthetic fiber comprises a polymer, such as a copolymer comprising from 85 to 99.5 percent by weight of a polyamide based on the total weight of the fiber and an aromatic sulfonate or a salt thereof present in a range from 0.5 to 10 percent by weight based on the total weight of the fiber, one or more metal compounds or ions thereof dispersed within the copolymer, and a phosphorus compound.
D06M 13/248 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing sulfur
D06M 13/282 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with non-macromolecular organic compoundsSuch treatment combined with mechanical treatment with compounds containing sulfur or phosphorus with compounds containing phosphorus
C08G 69/42 - Polyamides containing atoms other than carbon, hydrogen, oxygen, and nitrogen
A wet treatment process, the process comprising: adding an article comprising a polymer and an initial zinc content to a wash solution comprising solute and a wash solution zinc content; maintaining the article in the wash solution for a wash time greater than 10 seconds to yield a washed article comprising a washed zinc content; wherein the washed zinc content is greater than the initial zinc content; and wherein the washed article demonstrates a Klebsiella pneumonia log reduction greater than 0.90, as determined via ISO20743:2013 and/or an Escherichia coli log reduction greater than 1.5, as determined via ASTM E3160 (2018).
D06M 11/83 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metalsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with metal-generating compounds, e.g. metal carbonylsReduction of metal compounds on textiles
D06M 23/10 - Processes in which the treating agent is dissolved or dispersed in organic solventsProcesses for the recovery of organic solvents thereof
Provided herein is a polymer composition comprising an aromatic polyamide comprising terephthalic units and isophthalic units or a 6T/DT copolymer and having an overall high aromaticity, with a heat stabilizer and/or a lubricant. The polymer composition demonstrates improved electrical performance in terms of volume resistivity and dielectric strength.
An adhesive composition comprising a first part comprising an epoxy resin and a second part comprising a multifunctional amine package. The multifunctional amine package comprises bis(hexamethylene)triamine and a synergist. The amine concentration is at least 10% less than the epoxy resin concentration and the adhesive composition demonstrates a sag resistance ranging from 10 mm to 300 mm.
C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used
Staphylococcus aureusEscherichia coliEscherichia coli log reduction greater than 2.0, as determined by ISO 22196 (modified), and a slow rate puncture resistance greater than 1.5 N/µm as measured according to ASTM F1306.
This disclosure relates to a wet wipe fabric sheet comprising fibers comprising a polymer and zinc; and a lotion composition comprising less than 0.5 wt% preservative, such as phenoxyethanol, wherein the fibers retain greater than 200 wt% liquid, and the fibers inhibit mold formation. The disclosure also relates to a method of inhibiting or preventing mold and/or odor in a wet wipe fabric sheet, without the use of synthetic preservatives.
Provided herein is a polymer composition comprising an aromatic polyamide comprising terephthalic units and isophthalic units or a 6T/DT copolymer and having an overall high aromaticity, with a heat stabilizer and/or a lubricant. The polymer composition demonstrates improved electrical performance in terms of volume resistivity and dielectric strength.
A polyamide composition comprising a base polyamide and an elastomer concentrate comprising: 20-80 wt% of an elastomeric aliphatic polyether having a molecular weight ranging from 400-4000 g/mol; and 80-20 wt% of a concentrate polyamide. The polyamide composition has particular uses as a cable tie and demonstrates improved cold-temperature applications while maintaining high strength, good flammability rating, and excellent processability.
An adhesive composition comprising a first part comprising an epoxy resin and a second part comprising a multifunctional amine package. The multifunctional amine package comprises bis(hexamethylene)triamine and a synergist. The amine concentration is at least 10% less than the epoxy resin concentration and the adhesive composition demonstrates a sag resistance ranging from 10 mm to 300 mm.
C08G 59/40 - Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups characterised by the curing agents used
An antimicrobial film comprising antimicrobial film comprising from 50 wt % to 99.99 wt % of a polyamide composition, and from 10 wppm to 6000 wppm of zinc (and/or copper) dispersed within the film; wherein the film demonstrates: an antimicrobial efficacy to Staphylococcus aureus and Escherichia coli log reduction greater than 2.0, as determined by ISO 22196 (modified), and a slow rate puncture resistance greater than 1.5 N/μm as measured according to ASTM F1306.
An adhesive composition comprising a first part comprising an epoxy resin and a second part comprising a multifunctional amine package. The multifunctional amine package comprises bis(hexamethylene)triamine and a synergist. The amine concentration is at least 10% less than the epoxy resin concentration and the adhesive composition demonstrates a sag resistance of greater than 40 mm.
Provided herein is a polymer composition comprising an aromatic polyamide comprising terephthalic units and isophthalic units or a 6T/DT copolymer and having an overall high aromaticity, with a heat stabilizer and/or a lubricant. The polymer composition demonstrates improved electrical performance in terms of volume resistivity and dielectric strength.
A polyamide composition comprising a base polyamide and an elastomer concentrate comprising: 20-80 wt % of an elastomeric aliphatic polyether having a molecular weight ranging from 400-4000 g/mol; and 80-20 wt % of a concentrate polyamide. The polyamide composition has particular uses as a cable tie and demonstrates improved cold-temperature applications while maintaining high strength, good flammability rating, and excellent processability.
Polyamide resin that comprise one or more polyamides and a stabilizer component containing an copper complex and a copper salt is disclosed for improving the heat age performance for an article. The combination of a copper complex and a copper salt retains the mechanical properties of the article.
An antimicrobial conveyor belt apparatus comprising multiple segments each having a body portion and interlocking fingers extending from the body portion. The segments comprise a polymer composition comprising from 50 wt. % to 99.9 wt. % of a polymer, from 0.01 wt % to 10 wt % zinc, optionally from a zinc compound, less than 1 wt % of a phosphorus compound, and from 0 wt % to 20 wt % molding additives. The conveyor belt apparatus (or the segments thereof) demonstrates a Staphylococcus aureus log reduction greater than 1.0, as determined via ISO 22196:2011.
Polyamide resin that comprise one or more polyamides and a stabilizer component containing an copper complex and a copper salt is disclosed for improving the heat age performance for an article. The combination of a copper complex and a copper salt retains the mechanical properties of the article.
An AM/AV material, comprising a topsheet layer comprising fibers comprising a topsheet polymer composition, a backsheet layer comprising fibers comprising a backsheet polymer composition; and an absorbent core configured therebetween, wherein the fibers of at least one of the layers, e.g., the topsheet layer, comprise an AM/AV compound, and wherein the fibers of the topsheet layer demonstrate a rewet value less than 5 g after a first water application and/or a Staph aureus efficacy log reduction greater than 2.6, as measured in accordance with ISO 20743:2013.
A61L 15/46 - Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
A61L 15/22 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
A61F 13/513 - Topsheet, i.e. the permeable cover or layer facing the skin having areas of different permeability
67.
ANTIODOR AND ANTIMICROBIAL LAYERS IN ABSORBENT MATERIALS
A61F 13/15 - Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the bodySupporting or fastening means thereforTampon applicators
A61F 13/511 - Topsheet, i.e. the permeable cover or layer facing the skin
A61F 13/513 - Topsheet, i.e. the permeable cover or layer facing the skin having areas of different permeability
A61F 13/84 - Accessories, not otherwise provided for, for absorbent pads
A61F 13/49 - Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the bodySupporting or fastening means thereforTampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
B65G 15/32 - Belts or like endless load-carriers made of rubber or plastics
B65G 17/08 - Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriersEndless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the surface being formed by the traction element
The present disclosure relates to polymer resins, fibers, and yarns with permanent antimicrobial activity, and a method of producing the same. In one embodiment, the antimicrobial polymer resin comprises a polymer having less than 2500 ppm of zinc dispersed within the polymer, less than 1000 ppm of phosphorus, wherein the weight ratio of zinc to phosphorus is at least 1.3:1 or less than 0.64:1.
D01F 6/90 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyamides
D01F 9/08 - Man-made filaments or the like of other substancesManufacture thereofApparatus specially adapted for the manufacture of carbon filaments of inorganic material
A cleaning composition having an aqueous solutions containing amino carboxylic acid chelators comprising (a) trans-1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid monohydrate or salt thereof or (b) iminodiacetic acid or salt thereof may be used as an alternative for phosphates, NTA, and/or EDTA. The cleaning composition is used in industrial, commercial, or residential settings.
C11D 1/24 - Sulfonic acids or sulfuric acid estersSalts thereof derived from aromatic compounds containing ester or ether groups directly attached to the nucleus
C11D 3/00 - Other compounding ingredients of detergent compositions covered in group
A cleaning composition having an aqueous solutions containing amino carboxylic acid chelators comprising (a) trans-1,2-diaminocyclohexane-N,N,N',N'-tetraacetic acid monohydrate or salt thereof or (b) iminodiacetic acid or salt thereof may be used as an alternative for phosphates, NTA, and/or EDTA. The cleaning composition is used in industrial, commercial, or residential settings.
Reaction pathways and conditions for the production of nitrogen-containing chelators, such as a glycine derivative, with reduction of ammonia byproducts. In particular, the present disclosure describes a process for the production of a nitrile intermediate by reacting a tetra-amino compound or dinitrile compound with an aldehyde and a hydrogen cyanide to form the nitrile intermediate. The nitrile intermediate may then be further processed to produce chelators at a high yield and/or a high purity.
C07C 227/04 - Formation of amino groups in compounds containing carboxyl groups
C07C 229/16 - Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having only one amino and one carboxyl group bound to the carbon skeleton the nitrogen atom of the amino group being further bound to acyclic carbon atoms or to carbon atoms of rings other than six-membered aromatic rings to carbon atoms of hydrocarbon radicals substituted by amino or carboxyl groups, e.g. ethylenediamine-tetra-acetic acid, iminodiacetic acids
A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.
D04H 3/016 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
D04H 1/56 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
D04H 1/4382 - Stretched reticular film fibresComposite fibresMixed fibresUltrafine fibresFibres for artificial leather
D04H 1/552 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving by applying solvents or auxiliary agents
B82Y 40/00 - Manufacture or treatment of nanostructures
A terpolymer composition is described that contains a statistical amount of 50-98 wt % of a first repeating AA-BB comonomer unit; 1-25 wt % of a second repeating AA-BB comonomer unit; and 1-25 wt % of a repeating lactam comonomer unit or 1-25 wt % of a third repeating AA-BB comonomer unit, where the terpolymer composition exhibits a high melting point similar to that of PA66 while also exhibiting a significantly reduced crystallization rate and crystallization temperature.
C08L 77/02 - Polyamides derived from omega-amino carboxylic acids or from lactams thereof
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
75.
Process and formulation for producing a polyamide having low caprolactam concentration and specific relative viscosity
A base polyamide composition comprising a nylon mixture having caprolactam units from 1 wppb to 50 wppm catalyst composition; and greater than 0.75 wt % residual caprolactam, wherein the base polyamide composition has a delta end group level ranging from 30 μeq/gram to 90 μeq/gram.
Provided herein are processes for the separation of acetonitrile from low-purity feedstock streams. The provided processes are particularly useful for isolating acetonitrile at high purity from chemical manufacturing waste streams that include methanol, water, and allyl alcohol.
Provided herein are processes for the separation of acetonitrile from low-purity feedstock streams. The provided processes are particularly useful for isolating acetonitrile at high purity from chemical manufacturing waste streams that include methanol, water, and allyl alcohol.
Disclosed herein are drilling fluid compositions suitable for use, for example, in drilling a well bore through a subterranean formation and other oil and gas operations. The drilling fluid compositions of the present disclosure include the condensation product of a trifunctional amine and a fatty acid and an oil base fluid. The present disclosure also described processes for preparing drilling fluid compositions.
Disclosed herein are drilling fluid compositions suitable for use, for example, in drilling a well bore through a subterranean formation and other oil and gas operations. The drilling fluid compositions of the present disclosure include the condensation product of a trifunctional amine and a fatty acid and an oil base fluid. The present disclosure also described processes for preparing drilling fluid compositions.
Disclosed herein are drilling fluid compositions suitable for use, for example, in drilling a well bore through a subterranean formation and other oil and gas operations. The drilling fluid compositions of the present disclosure include the condensation product of a trifunctional amine and a fatty acid and an oil base fluid. The present disclosure also described processes for preparing drilling fluid compositions.
The present disclosure relates to a process for stabilizing an antimony ammoxidation catalyst in an ammoxidation process. The process may comprise providing an antimony ammoxidation catalyst to a reactor; reacting propylene with ammonia and oxygen in the fluidized bed reactor in the presence of the antimony ammoxidation catalyst to form a crude acrylonitrile product; and adding an effective amount of an antimony-containing compound to the antimony ammoxidation catalyst to maintain catalyst conversion and selectivity; wherein the antimony-containing compound has a melting point less than 375° C. The present disclosure also relates to catalyst compositions and additional processes using the antimony ammoxidation catalyst stabilized by an antimony-containing compound.
A sound absorbing multi-layer composite for a vehicle that reduces sounds along an acoustic path is configured with a non-foam polymeric layer and a face layer for dissipating sound energy. Also, the face layer may be made of a nonwoven polymer comprising at least 60% of a polyamide containing an aliphatic diamine having 6 or more carbon atoms and an aliphatic diacid having 6 or more carbon atoms. The weighted overall average fiber diameter of the composite is from 2 microns to 25 microns.
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 5/06 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments characterised by a fibrous layer needled to another layer, e.g. of fibres, of paper
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 29/02 - Layered products essentially comprising paper or cardboard next to a fibrous or filamentary layer
83.
Polyamide Nonwovens in Sound Absorbing Multi-Layer Composites
A sound absorbing multi-layer composite for a vehicle that reduces sounds along an acoustic path is configured with a non-foam polymeric layer and a face layer for dissipating sound energy. Also, the face layer may be made of a nonwoven polymer comprising at least 60% of a polyamide containing an aliphatic diamine having 6 or more carbon atoms and an aliphatic diacid having 6 or more carbon atoms. The weighted overall average fiber diameter of the composite is from 2 microns to 25 microns.
B60R 13/08 - Insulating elements, e.g. for sound insulation
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 15/14 - Layered products essentially comprising metal next to a fibrous or filamentary layer
G10K 11/168 - Plural layers of different materials, e.g. sandwiches
84.
POLYAMIDE NONWOVENS IN SOUND ABSORBING MULTI-LAYER COMPOSITES
A sound absorbing multi-layer composite for a vehicle that reduces sounds along an acoustic path is configured with a non-foam polymeric layer and a face layer for dissipating sound energy. Also, the face layer may be made of a nonwoven polymer comprising at least 60% of a polyamide containing an aliphatic diamine having 6 or more carbon atoms and an aliphatic diacid having 6 or more carbon atoms. The weighted overall average fiber diameter of the composite is from 2 microns to 25 microns.
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 5/06 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments characterised by a fibrous layer needled to another layer, e.g. of fibres, of paper
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 29/02 - Layered products essentially comprising paper or cardboard next to a fibrous or filamentary layer
Provided herein are antistripping compositions which may be used, for example, as additives to bitumen compositions such as asphalt concrete to prevent or reduce susceptibility to water damage. In particular, the antistripping compositions of the present disclosure have a triamine component and a nitrile component. Also provided herein are bitumen compositions, such as asphalt, having a portion of the described antistripping compositions as an additive.
Provided herein are antistripping compositions which may be used, for example, as additives to bitumen compositions such as asphalt concrete to prevent or reduce susceptibility to water damage. In particular, the antistripping compositions of the present disclosure have a triamine component and a nitrile component. Also provided herein are bitumen compositions, such as asphalt, having a portion of the described antistripping compositions as an additive.
Provided herein are antistripping compositions which may be used, for example, as additives to bitumen compositions such as asphalt concrete to prevent or reduce susceptibility to water damage. In particular, the antistripping compositions of the present disclosure have a triamine component and a nitrile component. Also provided herein are bitumen compositions, such as asphalt, having a portion of the described antistripping compositions as an additive.
A method of removing from a surface a solid sulfur-containing impurity composition comprising a sulfur-containing compound, the method comprising the step of dissolving sulfur-containing compound in the sulfur-containing impurity composition with a nitrile compound to form a treated sulfur-containing impurity composition comprising less than 99.5 wt % sulfur-containing compound, based on the total weight of the treated sulfur-containing impurity composition.
A method of removing from a surface a solid sulfur-containing impurity composition comprising a sulfur-containing compound, the method comprising the step of dissolving sulfur-containing compound in the sulfur-containing impurity composition with a nitrile compound to form a treated sulfur-containing impurity composition comprising less than 99.5 wt% sulfur-containing compound, based on the total weight of the treated sulfur-containing impurity composition.
E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
C09K 8/524 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
A method of removing from a surface a solid sulfur-containing impurity composition comprising a sulfur-containing compound, the method comprising the step of dissolving sulfur-containing compound in the sulfur-containing impurity composition with a nitrile compound to form a treated sulfur-containing impurity composition comprising less than 99.5 wt% sulfur-containing compound, based on the total weight of the treated sulfur-containing impurity composition.
C09K 8/524 - Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
E21B 37/06 - Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting the deposition of paraffins or like substances
Provided herein are processes for the separation of acetonitrile from low-purity feedstock streams. The provided processes are particularly useful for isolating acetonitrile at high purity from chemical manufacturing waste streams that include methanol, water, and allyl alcohol.
Provided herein are processes for the separation of acetonitrile from low-purity feedstock streams. The provided processes are particularly useful for isolating acetonitrile at high purity from chemical manufacturing waste streams that include methanol, water, and allyl alcohol.
A process for producing acetonitrile, the process comprising: treating a feedstock stream comprising methanol, allyl alcohol, oxazole, acetonitrile, water, and hydrogen cyanide to remove hydrogen cyanide and produce an acetonitrile stream comprising less than 1 wt.% hydrogen cyanide. The process further comprises the step of distilling the acetonitrile stream in a first distillation column to produce a first distillate comprising oxazole and methanol; a first intermediate acetonitrile stream comprising acetonitrile and oxazole and less than 1 wt% allyl alcohol; a first bottoms stream comprising allyl alcohol and water. The process further comprises the step of purifying the first intermediate acetonitrile stream to produce an acetonitrile product stream and a recycle stream comprising allyl alcohol.
Provided herein are processes for the separation of acetonitrile from low-purity feedstock streams. The provided processes are particularly useful for isolating acetonitrile at high purity from chemical manufacturing waste streams that include methanol, water, and allyl alcohol.
A process for producing acetonitrile, the process comprising: treating a feedstock stream comprising methanol, allyl alcohol, oxazole, acetonitrile, water, and hydrogen cyanide to remove hydrogen cyanide and produce an acetonitrile stream comprising less than 1 wt.% hydrogen cyanide. The process further comprises the step of distilling the acetonitrile stream in a first distillation column to produce a first distillate comprising oxazole and methanol; a first intermediate acetonitrile stream comprising acetonitrile and oxazole and less than 1 wt% allyl alcohol; a first bottoms stream comprising allyl alcohol and water. The process further comprises the step of purifying the first intermediate acetonitrile stream to produce an acetonitrile product stream and a recycle stream comprising allyl alcohol.
A process for producing acetonitrile, the process comprising: treating a feedstock stream comprising methanol, allyl alcohol, oxazole, acetonitrile, water, and hydrogen cyanide to remove hydrogen cyanide and produce an acetonitrile stream comprising less than 1 wt. % hydrogen cyanide. The process further comprises the step of distilling the acetonitrile stream in a first distillation column to produce a first distillate comprising oxazole and methanol; a first intermediate acetonitrile stream comprising acetonitrile and oxazole and less than 1 wt % allyl alcohol; a first bottoms stream comprising allyl alcohol and water. The process further comprises the step of purifying the first intermediate acetonitrile stream to produce an acetonitrile product stream and a recycle stream comprising allyl alcohol.
Provided herein are filter media structures having antimicrobial and/or antiviral properties. In particular, the present disclosure describes filter media structures having a first layer with an electret web and a second layer that demonstrates biological-reducing properties. In some cases, the first layer is formed from polypropylene (e.g., spunbond) and the second layer is formed from a plurality of fibers of a polyamide composition (e.g., meltblown).
Provided herein are filter media structures having antimicrobial and/or antiviral properties. In particular, the present disclosure describes filter media structures having a first layer with an electret web and a second layer that demonstrates biological-reducing properties. In some cases, the first layer is formed from polypropylene (e.g., spunbond) and the second layer is formed from a plurality of fibers of a polyamide composition (e.g., meltblown).
A polyamide composition comprising from 45 wt% to 95 wt% of polyamide polymer and from 5 wt% to 55 wt% of a modifier comprising a C18-44 dimer acid or a C18-44 dimer amine or a combination thereof. A number average molecular weight of the polyamide polymer is less than 30,000 g/mol. The polyamide composition has a chemical resistance, as measured by exposure to HCl (10%) for 14 days at 58 C, resulting in a weight loss of less than 3.0 wt%; and a moisture uptake of less than about 2.0 wt% moisture at 95% RH. A process for preparing the polyamide composition is also disclosed.
C08G 69/34 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids using polymerised unsaturated fatty acids
C08L 77/06 - Polyamides derived from polyamines and polycarboxylic acids
100.
ALIPHATIC AND SEMI-AROMATIC POLYAMIDES WITH DIMER ACIDS AND DIMER AMINES
A polyamide composition comprising from 45 wt % to 95 wt % of polyamide polymer and from 5 wt % to 55 wt % of a modifier comprising a C18-44 dimer acid or a C18-44 dimer amine or a combination thereof. A number average molecular weight of the polyamide polymer is less than 30,000 g/mol. The polyamide composition has a chemical resistance, as measured by exposure to HCl (10%) for 14 days at 58° C., resulting in a weight loss of less than 3.0 wt %; and a moisture uptake of less than about 2.0 wt % moisture at 95% RH. A process for preparing the polyamide composition is also disclosed.
C08G 69/26 - Polyamides derived from amino carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
