A coated paperboard (100) comprising: a base substrate (102) having a brightness of about 65 or less measured using TAPPI T452 and a coating (104) on at least one side of the base substrate, wherein the base substrate comprises: one or more opaque layers (114) including a white filler, wherein the opaque layer covers the base substrate so that visibility of the base substrate through the opaque layer is substantially eliminated; a barrier layer (116) covering the opaque layer; wherein the barrier layer substantially prevents aqueous fluids from contacting the opaque layer, and wherein the coated paperboard has a brightness on the side of the base substrate with the coating of about 65 or more measured using TAPPI T452, and a wet brightness drop, on the side of the base substrate with the coating, of about 30 or less, measured using the wet brightness drop test.
The present invention relates to a process for the continuous preparation of modified elastomeric polymers, comprising the steps of (i) providing and polymerizing at least one conjugated diene monomer and, optionally, one or more aromatic vinyl monomer in the presence of an anionic initiator and a compound according to Formula 1, e.g. 2, 2-di-(2-oxolanyl) propane or a derivative thereof, to provide a living anionic polymer; and (ii) adding a "sulfanyIsilane" compound to the living anionic polymer. The present invention also relates to elastomeric polymers that are obtainable according to the above process. In yet another embodiment, the present invention relates to a composition comprising the elastomeric polymer and, optionally, further constituents such as oil, filler and/or vulcanizing agent. The invention further relates to a process for the preparation of a cross-linked elastomeric polymer comprising the step of adding a vulcanizing agent to the elastomeric polymer. Moreover, cross-linked elastomeric polymers thus obtainable as well as articles and compositions comprising the elastomeric polymer, the cross-linked elastomeric polymer or both are described.
C08C 19/25 - Incorporating silicon atoms into the molecule
C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The invention describes a process for producing a diene polymer, the process comprising the following steps in this order : i) Polymerizing one or more diene monomers in the presence of a catalyst composition to give a reaction mixture; ii) Adding to the reaction mixture one or more alkoxysilane compounds; iii) Adding S2C12, SC12, SOC12, S2Br2, SOBr2 or a mixture thereof to the reaction mixture; and iv) optionally adding a protic agent to the reaction mixture so as to deactivate the catalyst. The invention further includes polymers that are obtainable according to this process, as well as products comprising the polymer.
Provided is a process for preparing polystyrene having a weight average molecular weight (Mw) in the range of 120,000- 160,000 g/mol, a polydispersity in the range of 4-6 and a melt flow rate of at least 40 g/10 minutes by feeding styrene into a reaction system through which the styrene passes as a component of a reaction mixture as it is polymerized, the reaction system including an initial reaction zone (100) and a downstream reaction zone (200), comprising the steps of : polymerizing styrene in the initial reaction zone to form polystyrene having a Mw of greater than 300,000 g/mol and a polydispersity in the range 1,5-2.5, 10-30 wt.% of the styrene fed to the initial reaction zone being polymerized there,- and polymerizing styrene remaining in the reaction mixture in the downstream reaction zone, a chain transfer agent being mixed with the reaction mixture at the commencement of this reaction zone and optionally at one or more additional locations within this reaction zone. The polystyrene may be used to manufacture expandable polystyrene beads or polystyrene foam board.
Apparatus (1) for admixing additives to a medium to be pumped, comprising at least one gear pump (2) for pumping a medium to be pumped, said gear pump (2) comprising at least one shaft (3) having a first driving torque; at least one injector (5) for introducing an additive into a medium to be pumped; at least one screw conveyor (6) for mixing said additive with said medium to be pumped, said screw conveyor having a second driving torque, and, characterized in that, the shaft (3) and the screw conveyor (6) are functionally connected, such that the first driving torque and the second driving torque are coupled.
B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
The present invention relates to a starch-based binder for carpet backings and carpets made therewith. The binder comprises water, a polymer and an oligomeric or polymeric starch hydrolysate compound.
The present invention relates to a process for preparing a polymer latex comprising polymerizing one or more ethylenically unsaturated aromatic monomers and one or more conjugated diene monomers in the presence of hydroperoxide chain transfer agent and sulfur- containing chain transfer agent, wherein the sulfur-containing chain transfer agent is added after the hydroperoxide chain transfer agent, It further relates to the polymer latex thus obtained, to a composition comprising the polymer latex and to the use of the polymer latex or polymer latex composition in a carpet backing, paper coating, or fiber fabric pre-impregnation process.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
D21H 19/58 - Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
D06N 7/00 - Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
C08F 2/24 - Emulsion polymerisation with the aid of emulsifying agents
The present invention relates to a radical scavenging and anti-yellowing composition for polymeric materials and compositions containing the same. The invention further relates to medical devices comprising a composition according to the invention and a to method of sterilizing such devices
A floor mat includes a plurality of projections (30) integrally formed and extending from a lower surface (14). At least some of the projections (30) have a straight axis (40) and a cross section perpendicular to the straight axis (40) that decreases from the base (32) to the tip (38) of the projection (30). The at least some projections (30) have a height measured along the axis (40) and a width corresponding to its largest dimension measured parallel to a plane of the lower surface (14) such that the ratio of the width to the height of the projection is greater than 1.
A composition comprising a blend of: a) one or more polycarbonates; b) one or more polyesters; c) one or more core shell rubbers having glycidyl groups on the surface of the core; and d) one or more halogenated fire retardant agent; wherein the polycarbonates and polyesters form separate phases and the core shell rubber is located in the polyester phase. The compositions may further comprise a fluoropolymer capable of functioning as an anti-drip agent. The compositions exhibit a flame retardant rating according to UL-94 at V-0 of 3.0 mm or less; a notched Izod impact strength of about 8 foot pounds per inch or greater (0.90 joules) and chemical resistance to one or more of the common cleaning compositions selected from bleach, polyethylene glycol, a mixture of aryl substituted phenols and aryl substituted chlorophenols, a mixture of an alkanol and a monoalkyl ether of ethylene glycol, and one or more ammonium chlorides.
A polymer having at least the following characteristics: (a) a block styrene content with more than 6 consecutive styrene units from about 15 to about 35 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; and (c) a styrene content from about 35 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
A polymer having at least the following characteristics: (a) a block styrene content with more than 4 consecutive styrene units from about 40 to about 70 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 25 to about 80 weight percent based on total amount of polymerized 1,3-diene; (c) a styrene content from about 20 to about 75 weight percent based on total weight of polymer; and (d) a molecular weight distribution (Mw/Mn) of 1.5 or less.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
A polymer has at least the following characteristics: (a) a block styrene content containing 4 to 6 styrene units from about 27 to about 50 weight percent based on total styrene content in the polymer; (b) a vinyl content from about 30 to about 80 weight percent based on total amount of polymerized 1, 3-butadiene; and (c) a styrene content from about 40 to about 70 weight percent based on total weight of polymer. Processes for the polymerization of such a polymer, compositions containing such a pofymer, and articles containing at least one component formed from such a composition are described.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
A process for polymerization of a polymer containing monomeric units derived from a styrene monomer and a 1,3-butadiene monomer includes polymerizing the monomeric units in the presence of an initiator, a first polar agent, and a second polar agent. The first polar agent includes a structure (I): R1'R2'N-Q-NR3'R4'; and the second polar agent comprises a structure (II): R1', R2', R3', and R4' are each independently selected from the group consisting of an alkyl group and hydrogen; Q contains an alkylene group; R1 and R2 are each independently an alkyl group; and R3, R4, R5, R6, R7 and R8 are each independently selected from the group consisting of an alkyl group and hydrogen. Polymers prepared by the above process are described, as are compositions containing such a polymer, and articles containing at least one component formed from such a composition.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
This present invention relates to carbon nanotubes as fillers in composites with materials such as elastomers, thermosets and thermoplastics. A further feature of this invention relates to the development of a concentrate of carbon nanotubes with an elastomer wherein the concentrate can be further diluted with an elastomer and other polymers and fillers using conventional melt mixing.
This present invention relates to carbon nanotubes as fillers in composites with materials such as elastomers, thermosets and thermoplastics. A further feature of this invention relates to the development of a concentrate of carbon nanotubes with an elastomer wherein the concentrate can be further diluted with an elastomer and other polymers and fillers using conventional melt mixing.
This present invention relates to carbon nanotubes as fillers in composites with materials such as elastomers, thermosets and thermoplastics. A further feature of this invention relates to the development of a concentrate of carbon nanotubes with an elastomer wherein the concentrate can be further diluted with an elastomer and other polymers and fillers using conventional melt mixing.
An extruded polycarbonate multi-walled sheet structure includes at least two and in some cases seven or more generally parallel spaced apart walls and a plurality of ribs extending the length of the sheet in a direction of extrusion and separating adjacent walls. The sheet structure has a total thickness greater than 40 mm and the polycarbonate has a melt viscosity ratio greater than about 4.5 measured at 260 °C wherein the melt viscosity ratio is a ratio of the viscosity at a shear rate of 100 s-1 to the viscosity at a shear rate of 0.1 s-1.
B32B 3/12 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
E04C 2/20 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the likeBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of plasticsBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of foamed products of plastics
A composition includes i) a polymer; ii) a primary filler; and iii) a secondary filler. The secondary filler includes a material selected from the group consisting of a secondary glass powder filler, a zinc-doped secondary glass powder filler, and a combination thereof.
The invention provides a process for the continuous polymerization of a polymer comprising monomeric units derived from styrene and 1,3-butadiene, said process comprising: polymerizing the monomers in the presence of an initiator, and at least one polar agent selected from Formula 1; wherein R1 and R2 are each independently an alkyl, and preferably a C1-C4 alkyl; R3, R4, R5, R6, R7 and R8 are each independently selected from hydrogen or an alkyl, and preferably hydrogen or a C1-C4 alkyl; and wherein a 1,2-diene is added to the polymerization, and the 1,2-diene to active initiator (active for polymerization) molar ratio is from 0.1 to 1.0, preferably from 0.1 to 0.9, and more preferably from 0.1 to 0.85; and wherein the polar agent to the active initiator molar ratio is from 0.05 to 0.6, preferably from 0.1 to 0.5, more preferably from 0.15 to 0.3. The invention also provides a composition comprising a polymer comprising monomeric units derived from styrene and 1,3-butadiene, and wherein the polymer has at least the following characteristics: A) vinyl content from 12 to 40 weight percent, based on the weight of polymerized butadiene in the polymer, B) block styrene content less than 8 weight percent, based on the weight of styrene in the polymer, and C) a styrene content from 10 to 50 weight percent, based on the weight of the polymer.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
An improved seating system that includes a blow molded seat back assembly that is fabricated to include a seat back comprising a double walled design having a foreword (14) and a rearward (16) wall wherein there is at least one or more sections comprising a single wall (213). Further, the blow molded seat back may include an integrated reinforcement structure.
The present invention relates to a light diffusing composition and its use for imparting light diffusing properties to a thermoplastic polymer. The present invention further relates to a polymer composition containing said novel light diffusing composition and to a compounded composition or formed article produced therefrom such as a cover. Said thermoplastic light diffusing composition comprises a) an inorganic particle, b) a polymeric particle differs in refractive index n at 589 nm by at least 0.05 from that of the thermoplastic resin polymer, and one or more of c), d), or mixtures thereof wherein c) is a wavelength downshifting material, and d) is an interference pigment. Further, the present invention relates to a luminous device comprising a light source, preferably one or more LED and a formed cover comprising said light diffusing composition.
C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
A polycarbonate (co)polymer is provided comprising monomeric residues of a dihydric bisphenol acetylene and optionally a dihydric phenol, preferably Bisphenol-A. Said polycarbonate (co)polymer demonstrates significantly improved flammability properties as demonstrated by increased charring and lower heat release under combustion conditions. Further embodiments of the present invention include a method for producing said polycarbonate (co)polymer.
The present invention relates to carbonate blend compositions demonstrating improved environmental stress crack resistance in combination with an excellent blend of impact, thermal, and physical properties. Said carbonate blend composition comprises a polycarbonate, a polyester, and a silicon-containing graft (co)polymer having a core-shell morphology, comprising a shell that contains (co)polymerized alkyl(meth)acrylate and glycidy] methacrylate grafted to a composite rubber core that contains polyorganosiloxane and poly(meth)alkyl acrylate components and methods to make said compositions.
The present invention relates to carbonate blend compositions demonstrating improved environmental stress crack resistance in combination with an excellent blend of impact, thermal, and physical properties. Said carbonate blend composition comprises a polycarbonate, a polyester, and a silicon-containing graft (co)polymer having a core-shell morphology, comprising a shell that contains (co)polymerized alkyl(meth)acrylate and glycidyl methacrylate grafted to a composite rubber core that contains polyorganosiloxane and poly(meth)alkyl acrylate components and methods to make said compositions.
The present invention relates to carbonate phosphite copolymers having an effective amount of a phosphorous compound copolymerized therein to render the carbonate phosphite copolymer thermally oxidatively stabile and methods to make said copolymer. A preferred carbonate copolymer is the polymerization product resulting from the phosgenation of the comonomers bisphenol A and tris(4-hydroxy-2, 2- diphenylpropane)phosphite.
The present invention relates to an improved branched carbonate polymer composition and methods to make said composition. The branched carbonate polymer composition comprises a blend of a branched carbonate polymer component, a first linear carbonate polymer component, and a second linear carbonate polymer component, wherein the ratio of melt flow rates of the first linear carbonate polymer component to the second linear carbonate polymer component is equal to or greater than 1 to 3. The invention further relates to the containers comprising the improved branched carbonate polymer composition, and methods to manufacture said containers, preferably blow molding. Containers made from the improved branched carbonate polymer composition demonstrate an improved blend of properties, specifically improved impact resistance, clarity, and lower levels of entrapped bubbles than traditional water bottles.
The present invention is an ignition resistant carbonate polymer composition, a method to make said composition and fabricated articles made therefrom. The ignition resistant carbonate polymer composition consists of: (i) an aromatic polycarbonate or an aromatic polyester carbonate, (ii) a graft (co)polymer produced by mass polymerization, (iii) a silicon-containing graft (co)polymer having a core-shell morphology, including a grafted shell that contains polymerized alkyl(meth)acrylate and a composite rubber core that contains polyorganosiloxane and poly(meth)alkyl acrylate components, wherein said core comprises at least 20 percent by weight silicon based on the total weight of (iii), (iv) an oligomeric aromatic phosphate compound represented by the formula I: wherein, R1, R2, R3 and R4 independently of one another each denote optionally halogenated C1- to C8-alkyl, or C5- to C6- cycloalkyl, C6- to C20- aryl or C7- to C12- aralkyl, in each case optionally substituted by alkyl and/or halogen, X denotes a mono- or polynuclear aromatic radical having 6 to 30 C atoms, n independently of one another is 0 or 1, N represents values greater than 0 and less than 30, (v) a polytetrafluoroethylene polymer, a fluorothermoplast, or mixture thereof, and (vi) one or more of a thermoplastic vinyl (co)polymer, an impact modifier different from (iii), a filler, a reinforcing material, a stabilizer, a pigment, a dye, a mold release, a lubricant, or an anti-static agent.
The present invention is an ignition resistant carbonate polymer composition, a method to make said composition and fabricated articles made therefrom. The ignition resistant carbonate polymer composition consists of: (i) an aromatic polycarbonate or an aromatic polyester carbonate, (ii) a graft (co)polymer produced by mass polymerization, (iii) a thermoplastic semi-crystalline polyalkylene dicarboxylate polymer having an intrinsic viscosity of from 0.4 to 0.7 dl/g, (iv) an aromatic phosphate compound represented by the formula (I) : wherein, R1, R2, R3 and R4 independently of one another each denote optionally halogenated C1- to C8-alkyl, or C5- to C6- cycloalkyl, C6- to C20- aryl or C7- to C12- aralkyl, in each case optionally substituted by alkyl and/or halogen, X denotes a mono- or polynuclear aromatic radical having 6 to 30 C atoms, n independently of one another is 0 or 1, N represents values from 0 to 30, (v) a polytetrafluoroethylene polymer, a fluorothermoplast, or mixture thereof, and (vi) one or more of a thermoplastic vinyl (co)ρolymer, an impact modifier, a filler, a reinforcing material, a stabilizer, a pigment, a dye, a mold release, a lubricant, or an anti-static agent.
The invention provides a first composition comprising at least the following: i) a modified polymer comprising at least one branched modified polymer macromolecule (b1) and at least one linear modified polymer macromolecule (a1), and wherein the at least one branched modified polymer macromolecule and the at least one linear modified polymer macromolecule each, independently, comprises at least one amine group selected from the group consisting of formulas (1 A-1F), each as described above Formula 1A, Formula 1B, Formula 1C, Formula 1D, Formula 1E, Formula 1F, and combinations thereof; and wherein the at least one branched modified polymer macromolecule further comprises one of the structures (ib1 -ib4) as described above, and the at least one linear modified polymer macromolecule further comprises one of the structures (iib1-iib2) as described above.
C08C 19/22 - Incorporating nitrogen atoms into the molecule
C08C 19/25 - Incorporating silicon atoms into the molecule
C08C 19/26 - Incorporating metal atoms into the molecule
C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
The invention provides a first composition comprising at least the following: i) a modified polymer comprising at least one branched modified polymer macromolecule (b1) and at least one linear modified polymer macromolecule (a1), and wherein the at least one branched modified polymer macromolecule and the at least one linear modified polymer macromolecule each, independently, comprises at least one amine group selected from the group consisting of formulas (1A-1F), each as described above: and combinations thereof; and wherein the at least one branched modified polymer macromolecule further comprises one of the structures (ib1 -ib4) as described above, and the at least one linear modified polymer macromolecule further comprises one of the structures (iib1) as described above (see Formula 3A)
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The invention provides a catalyst system comprising: A) cobalt II carboxylate, and B) at least one co-catalyst of the following Structure A wherein n is from 1 to 10, preferably from 1 to 6, and more preferably from 1 to 4; each R is independently an alkyl. The invention also provides a catalyst system comprising: A) cobalt II carboxylate; and B) the reaction product of at least the following components: i) trialkyl aluminum, ii) dialkyl aluminum chloride, iii) water, and wherein the molar ratio of aluminum to chloride (A1:C1) is less than 1 (preferably 0.7 to 0.2), the molar ratio of water to aluminum (H2O:A1) is from 0.5 to 0.92 (preferably from 0.55 to 0.75), and the molar ratio of trialkyl aluminum to dialkyl aluminum chloride from 0.5 to 5 (preferably from 1 to 5). The invention also provides a catalyst complex comprising the following: a) CoR'(2-χ)C1(X), wherein x is from 0.01 to 1, preferably from 0.1 to 1; and R' is a carboxylate; b) (n-m)R2R3A1C1 • mR1 3A1, wherein n is from 1 to 12, preferably from 1 to 6; m is from 1 to 10, preferably from 1 to 4; and n is greater than, or equal to, m; and R1, R2 and R3 are each independently an alkyl; and c) n/k H2O, wherein k is from 1.5 to 11, preferably from 1.5 to 4.
The ductility/stiffness balance of a rubber-modified monovinylidene aromatic polymer, e.g., HIPS, is increased without increasing the rubber content of the polymer and/or changing the size of the average rubber particle by a process comprising the step of crosslinking the rubber such that the rubber-modified polymer has an optical crosslink index (OCLI) of < 0.5 and an injection molded/compression molded (IM/CM) modulus ratio≥1.3.
C08F 257/02 - Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group on to polymers of styrene or alkyl-substituted styrenes
C08F 279/02 - Macromolecular compounds obtained by polymerising monomers on to polymers of monomers having two or more carbon-to-carbon double bonds as defined in group on to polymers of conjugated dienes
C08F 279/04 - Vinyl aromatic monomers and nitriles as the only monomers
C08L 51/00 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
The present invention relates to an improved process for online measurement of monomer concentration, specifically bisphenol A, in an interfacial polycarbonate manufacturing process. Wherein the measurement is obtained by vibrational spectroscopy for the purpose of improving process control, specifically, controlling the carbonate polymer molecular weight.
The present invention relates to improved compositions of SSBR rubber. The improved compositions exhibit sufficient or improved balance of characteristics such as rolling resistance, HBU, abrasion, grip, and/or tear. The compositions may be made in an efficient, cost-effective manner.
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
36.
PAPER MAKING PROCESS USING BINDER/FILLER AGGLOMERATES
A process for making paper, comprising contacting an anionic binder with a cationizing agent to make a cationized binder, contacting the cationized binder with an anionic pigment to form a binder/pigment agglomerate, contacting the agglomerate with an aqueous slurry of fibers, and forming a paper product from the slurry. The agglomerate may reduce the total cost of the paper product being produced while maintaining the strength of the paper at acceptable levels.
Disclosed is a transparent multilayer article comprising a core layer comprising a thermoplastic carbonate polymer; a first layer comprising a carbonate thermoplastic polymer and an infrared (IR) absorbing additive; and a second layer comprising a thermoplastic carbonate polymer and a ultraviolet (UV) absorbing stabilizer, wherein the first layer does not contain an UV absorbing additive and the second layer does not contain an IR absorbing additive. Disclosed herein too, is a method for manufacturing a transparent multilayer article comprising melt blending a first thermoplastic carbonate polymer composition to produce a core layer; melt blending a second thermoplastic carbonate polymer composition with an IR absorbing additive to produce a first layer; and melt blending a third thermoplastic carbonate polymer composition with an UV absorbing stabilizer; combining the core layer, first layer, and second layer such that the first layer is disposed between the core layer and the second layer such that a first surface of the first layer is in intimate contact with a first surface of the core layer and a second surface of the first layer is in intimate contact with a first surface of the second layer.
A method for increasing the monomer conversion in a redox initiated emulsion polymerization has been discovered. The method comprises adding a composition comprising an effective amount of a substituted phenol to the polymerization medium. In this manner, high monomer conversion is obtained and the product has low gel contents and a low amount or no crosslinking.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The present invention relates to an improved process for preparing linear polycarbonates having an improved technique for adding a coupling catalyst compound, specifically the addition of the coupling catalyst at two or more separate, different points in the process. Linear polycarbonate resins prepared by said process demonstrate a lower level of polycarbonate oligomers and an improved balance of properties, in particular improved impact strength and lower ductile brittle transition temperature.
The present invention relates to an improved process for recycling a coupling catalyst, preferably an amine catalyst in an interfacial polycarbonate manufacturing process. Specifically, the amine catalyst is recycled in an acidic wash water solution.
The invention provides a method for a preparation of a polymer selected from the following: (a) modified interpolymer comprising, in polymerized form, a conjugated diene and an aromatic alpha-olefin, or (b) a modified polymer comprising, in polymerized form, a conjugated diene; and wherein said method comprising at least the following steps: polymerizing monomers comprising at least one conjugated diene monomer in at least one polymerization reactor, in the presence of at least one solvent, to form the polymer, optionally coupling a fraction of the polymer chains using at least one coupling agent, modifying the polymer with at least one modifying agent, in at least one reactor, in the presence of the at least one solvent, to form a modified polymer solution; optionally, contacting the modified polymer solution with at least one proton donating compound; contacting the modified polymer solution with water; removing the at least one solvent; contacting the removed solvent with at least one material that will react with, and/or absorb, silanol to form a purified solvent, recirculating the purified solvent back to the at least one polymerization reactor or to a storage container.
C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
Compositions comprising (a) a rubber-modified monovinylidene aromatic polymer, e.g., HIPS, and (b) a specified poly-alpha-olefin (PAO), e.g., an oligomer of hexene, octene, decene, dodecene and/or tetradecene, that has a dynamic viscosity value of from about 40 to about 500 centipoise (cP) at 40°C, exhibit improved combinations of environmental stress crack resistance, impact resistance and heat resistance as compared to compositions without such a PAO. The compositions are useful in the manufacture of articles, e.g., refrigerator liners and food packaging, which come in contact with the oils contained in various food stuffs.
C08L 25/00 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ringCompositions of derivatives of such polymers
C08L 25/12 - Copolymers of styrene with unsaturated nitriles
C08L 51/04 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to rubbers
The present invention provides multilayer sheet structures especially suited for thermoforming applications such as refrigerator cabinet and door liners comprising a surface non-foamed layer A and a surface foamed layer B having a total sheet thickness of from about 0.5 to about 20 millimeters ("mm"). Improvements in thermoformability, including cycle time reduction and polymer and energy savings, are provided. Preferably the non-foamed thermoplastic polymer surface layer (A) has a thickness of from about 0.25 to about 6 millimeters and the foamed thermoplastic polymer surface layer (B) together with any other foamed polymer layers have a total density reduction of at least about five (5) weight percent and have a total thickness greater than the total thickness of the non-foamed layer A together with any other non-foamed layers. Also provided are improvements in the thermoforming process, thermoformed articles, processes for providing thermally insulating articles and thermally insulating articles.
B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material
F25D 23/08 - Parts formed wholly or mainly of plastics materials
The present invention is an ignition resistant carbonate polymer composition, a method to make said composition and fabricated articles made therefrom. The ignition resistant carbonate polymer composition comprises: (i) an aromatic polycarbonate or an aromatic polyester carbonate, (ii) a graft polymer, (iii) optionally one or more thermoplastic vinyl (co)polymer, (iv) optionally one or more thermoplastic polyester polymer, (v) an aromatic phosphate compound, and (vi) a mixture of a fibril forming polytetrafluoroethylene polymer and a fluorothermoplast.
C08L 69/00 - Compositions of polycarbonatesCompositions of derivatives of polycarbonates
C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
C08L 27/12 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogenCompositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
C08L 27/18 - Homopolymers or copolymers of tetrafluoroethene
This invention relates to a mass polymerized rubber-modified monovinylidene aromatic copolymer composition compositions with an improved balance of aesthetic, physical and mechanical properties, in particular, a combination of low gloss and good impact resistance in (co)extruded sheet and thermoformed/vacuum formed articles therefrom. A method for preparing such compositions and articles is disclosed. The improved gloss performance is achieved by maintaining the following relationship between the average rubber particle size (RPS) and the weight average molecular weight (Mw) of the matrix polymer: Mw ≥ 155 - 10-6 * RPS6.
Compositions comprising a coupled interpolymer such as polybutadiene which may be suitable for HIPS and ABS have been discovered. The coupled interpolymer composition comprises an interpolymer comprising one or more monomeric units derived from a diene wherein the coupled interpolymer composition is characterized by: (A) a halide content of less than about 30 ppm based on the total weight of the coupled interpolymer; (B) a molecular weight distribution of from about 1.6 to about 2.4; and (C) a vinyl content of from about 5 to about 15 weight percent based on the total weight of the coupled interpolymer.
C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
The invention provides a elastomeήc polymer composition comprising the reaction product of at least the following: i) a living anionic elastomeric polymer; ii) a silane modifier compound represented by the Formula I or Formula 2: (RIO)3Si-R4-S-SiR33, Formula 1 (R13O)3Si- R9-N(SiR10R11R12 Formula 2 iii) a modifier compound represented by one of the following Formulas 3 to 6: (R1O)x(R2)ySi-R4-S-SiR33, Formula 3 (R13O)P(R14)qSi- R9-N(SiR10R11R12)2 Formula 4, Formule 5, Formule 6
C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
The abstract was not in accordance with PCT Rule 8 1(b) because it was more than 150 words in length The abstract has been established by this Authonty to read as follows A process for forming a polymer from styrene and 1,3-butadιene monomer units includes A) adding less than 60% of the butadiene used in the polymerization, to the total amount of styrene and solvent used in the polymeπzation in a reactor, B) adding at least one initiator, and reacting the mixture for a time t, C) adding the remaining amount of butadiene in two or more separate additions, and wherein for each butadiene addition, the amount of subsequent butadiene added is less than, or equal to, the amount of butadiene added in the immediately pπor addition, and wherein for each butadiene addition, the butadiene is added over a time, t(nc), and after each addition, reacting the mixture for a time, t(nr) wherein n is the number of the butadiene addition, and for each addition, n is at least 1.
C08F 297/04 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
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