A modified curing agent component and a process for preparing said modified curing agent component is disclosed. The modified curing agent component comprises a compound of Formula I, a compound of Formula II and a compound of Formula III. A recyclable epoxy resin system comprising at least one epoxy resin component and the modified curing agent component is disclosed. The disclosed recyclable epoxy resin system has a curing temperature in the range of 0 °C - 10 °C.
C07C 217/40 - Compounds containing amino and etherified hydroxy groups bound to the same carbon skeleton having etherified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having one amino group and at least two singly-bound oxygen atoms, with at least one being part of an etherified hydroxy group, bound to the carbon skeleton, e.g. ethers of polyhydroxy amines having at least two singly-bound oxygen atoms, with at least one being part of an etherified hydroxy group, bound to the same carbon atom of the carbon skeleton, e.g. amino-ketals, ortho esters
The present disclosure relates to a continuous process for preparing hydrophobic regenerated cellulosic fiber. Said process comprises treating never-dried cellulosic fiber with a hydrophobic composition comprising 0.05-2.5 weight % of an alkyl ketene dimer based on weight of cellulose. The alkyl ketene dimer has a formula I: wherein both R1 and R2 are hydrocarbon groups having 8-40 carbon atoms and which can be both, saturated or unsaturated, straight-chained or branched. The hydrophobic composition further comprises 0.02-1 weight % of a cationic polymer based on weight of cellulose. After treatment with the hydrophobic composition, the treated fiber is subjected to a drying step to form hydrophobic regenerated cellulose fiber.
The present disclosure relates to a continuous process for preparing hydrophobic regenerated cellulosic fiber. Said process comprises treating never-dried cellulosic fiber with a hydrophobic composition comprising 0.05-2.5 weight % of an alkyl ketene dimer based on weight of cellulose. The alkyl ketene dimer has a formula I: wherein both R1 and R2 are hydrocarbon groups having 8-40 carbon atoms and which can be both, saturated or unsaturated, straight-chained or branched. The hydrophobic composition further comprises 0.02-1 weight % of a cationic polymer based on weight of cellulose. After treatment with the hydrophobic composition, the treated fiber is subjected to a drying step to form hydrophobic regenerated cellulose fiber.
D06M 15/356 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of other unsaturated compounds containing nitrogen, sulfur, silicon or phosphorus atoms
Cellulosic material for the production of regenerated cellulosic fiber is disclosed. The cellulosic material comprises reclaimed cellulosic material, wherein the reclaimed cellulosic material is obtained from cellulosic material waste and has an intrinsic viscosity in a range of 170 ml/g to 280 ml/g. A process for preparing reclaimed cellulosic material for the production of regenerated cellulosic fiber is also disclosed.
32222)n; a is an integer in the range of 0-6; b is an integer in the range of 0-4; m is an integer in the range of 0-3; n is an integer in the range of 1-5.
Aditya Birla Science and Technology Company Pvt. Ltd. (India)
Grasim Industries Ltd. (India)
Inventor
Mohite, Lalaso Vishnu
Nagarkar, Shailesh Prakash
Shingote, Santosh Shivaji
Thakre, Shirish Sheshrao
Dutta, Suvankar Madhusudan
Kale, Bandu Madhukar
Sharma, Roop Kishore
Limbani, Manishkumar Govindbhai
Pankaj, Srivastava
Dagur, Harendra Singh
Abstract
The present invention relates to a process for manufacturing lyocell filament yarn with improved mechanical properties and an apparatus thereof. The process involves washing of filament yarn with sequential decrease in NMMO concentrations and filament yarn drying under relaxed conditions. Additionally, the present invention also provides a compact washing and drying apparatus that uses controlled air gap spinning thereby resulting in production of LFY under relaxed conditions and also having a higher mechanical properties & productivity.
122 are hydrocarbon groups having 8-40 carbon atoms and which can be both, saturated or unsaturated, straight-chained or branched. The hydrophobic composition further comprises 0.02 - 1 weight % of a cationic polymer based on weight of cellulose. After treatment with the hydrophobic composition, the treated fiber is subjected to a drying step to form hydrophobic regenerated cellulose fiber.
C08G 73/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups
A high tenacity regenerated cellulosic fiber is disclosed. Said high tenacity regenerated cellulosic fiber is prepared from a cellulosic raw material, wherein the cellulosic raw material comprises 5-100 wt% of a pre-treated bacterial cellulose having a degree of polymerization in a range of 450-2000; and 0 to 95 wt% of an additional cellulosic material selected from a group consisting of dissolving grade pulp, recycled cotton pulp, reclaimed cellulosic material and a mixture thereof. Said fiber has a tenacity of at least 4.5 grams/denier and elongation of at least 10%, measured in accordance with ASTM D 3822.
A high tenacity regenerated cellulosic fiber is disclosed. Said high tenacity regenerated cellulosic fiber is prepared from a cellulosic raw material, wherein the cellulosic raw material comprises 5-100 wt% of a pre-treated bacterial cellulose having a degree of polymerization in a range of 450-2000; and 0 to 95 wt% of an additional cellulosic material selected from a group consisting of dissolving grade pulp, recycled cotton pulp, reclaimed cellulosic material and a mixture thereof. Said fiber has a tenacity of at least 4.5 grams/denier and elongation of at least 10%, measured in accordance with ASTM D 3822.
D01F 2/06 - Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
D06P 1/62 - 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 insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate or sulfonate groups
Cellulosic material for the production of regenerated cellulosic fiber is disclosed. The cellulosic material comprises reclaimed cellulosic material, wherein the reclaimed cellulosic material is obtained from cellulosic material waste and has an intrinsic viscosity in a range of 170 ml/g to 280 ml/g. A process for preparing reclaimed cellulosic material for the production of regenerated cellulosic fiber is also disclosed.
D21H 11/12 - Pulp from non-woody plants or crops, e.g. cotton, flax, straw or bagasse
D21C 5/00 - Other processes for obtaining cellulose, e.g. cooking cotton linters
D01F 13/02 - Recovery of starting material, waste material or solvents during the manufacture of man-made filaments or the like of cellulose, cellulose derivatives, or proteins
D01F 2/02 - Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases, or salts
Cellulosic material for the production of regenerated cellulosic fiber is disclosed. The cellulosic material comprises reclaimed cellulosic material, wherein the reclaimed cellulosic material is obtained from cellulosic material waste and has an intrinsic viscosity in a range of 170 ml/g to 280 ml/g. A process for preparing reclaimed cellulosic material for the production of regenerated cellulosic fiber is also disclosed.
D01F 2/02 - Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases, or salts
D01F 13/02 - Recovery of starting material, waste material or solvents during the manufacture of man-made filaments or the like of cellulose, cellulose derivatives, or proteins
The present disclosure relates to an acid regenerated cellulose fiber having wet tenacity of at least 1.7 grams per denier; conditioned tenacity of at least 3.0 grams per denier; and degree of polymerization of less than 300.
D01F 2/06 - Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
D01F 2/02 - Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases, or salts
D21H 13/08 - Synthetic cellulose fibres from regenerated cellulose
A process of preparing moulded cellulosic material from reclaimed cellulosic material is disclosed. The process comprises the steps of: treating the reclaimed cellulosic material with at least one bleaching compound, to decolourise (if any) and to reduce the degree of polymerization of the reclaimed cellulosic material to a cupriethylenediamine viscosity less than 500ml/g, to obtain bleached reclaimed cellulosic material; washing the bleached reclaimed cellulosic material with water; shredding the bleached and washed reclaimed cellulosic material, to obtain treated reclaimed cellulosic material; preparing a dope for a viscose or lyocell process comprising the treated reclaimed cellulosic material; and preparing a moulded cellulosic material from the dope so prepared.
The present disclosure relates to the field of fibres for non-woven fabric, particularly to curled shortcut fibres for non-woven fabric, and a process for their preparation. The curled shortcut fibres of the present disclosure have a length in the range of 3 mm to 25 mm and denier in the range of 1.0 to 3.0. The curled shortcut fibres have a curled shape, wherein the shortest distance between the two ends of at least 50% of the curled shortcut fibres is in the range of 70% to 90% of the total length of the curled shortcut fibres. The curled shortcut fibres have a fibre-to-fibre friction in the range of 100 Nm/s to 500 Nm/s. A non-woven fabric comprising curled shortcut fibres of the present disclosure is also provided. The non-woven fabric comprising curled shortcut fibres has comparatively better wet strength and better flushability.
D04H 3/00 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
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
D02G 1/00 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics
ADITYA BIRLA SCIENCE AND TECHNOLOGY COMPANY PVT. LTD. (India)
GRASIM INDUSTRIES LTD. (India)
Inventor
Mohite, Lalaso Vishnu
Nagarkar, Shailesh Prakash
Shingote, Santosh Shivaji
Thakre, Shirish Sheshrao
Dutta, Suvankar Madhusudan
Kale, Bandu Madhukar
Sharma, Roop Kishore
Limbani, Manishkumar Govindbhai
Pankaj, Srivastava
Dagur, Harendra Singh
Abstract
The present invention relates to a process for manufacturing lyocell filament yarn with improved mechanical properties and an apparatus thereof. The process involves washing of filament yarn with sequential decrease in NMMO concentrations and filament yarn drying under relaxed conditions. Additionally, the present invention also provides a compact washing and drying apparatus that uses controlled air gap spinning thereby resulting in production of LFY under relaxed conditions and also having a higher mechanical properties & productivity.
12344 is hydrogen; (c) subjecting the treated regenerated cellulosic fiber to a moisture regulating step such that the moisture content in the treated cellulosic fiber is not more than 120% of weight of the treated cellulosic fiber; and (d) curing the treated cellulosic fiber at a temperature ranging between 100° C and 145° C, to obtain regenerated cellulosic fiber which is cationically modified by 3-halo-2- hydroxyalkyl-N,N,N-tri-alkyl or aryl substituted ammonium compound having formula I, or a salt thereof in an amount ranging between 1.5 to 33 % by weight.
A process for preparing an aromatic N-glycidylamine comprising a step of heating a mixture of an amine having at least one aromatic aminohydrogen atom with at least 0.7 equivalent of epichlorohydrin per aminohydrogen equivalent of the amine in presence of a catalyst dissolved in an inert organic solvent, at a pressure in a range of 200 mbar to 600 mbar; and adding a base to the mixture at a pressure in a range of 200 mbar to 600 mbar to facilitate dehydrochlorination of product of the previous step to obtain the aromatic N-glycidylamine.
An antibacterial regenerated cellulosic fiber is disclosed. The antibacterial regenerated cellulosic fiber comprises a quaternary ammonium compound in a concentration range of 0.05 – 1% w/w on the regenerated cellulosic fiber.
A process for preparing an aromatic N- glycidylamine comprising a step of heating a mixture of an amine having at least one aromatic aminohydrogen atom with at least 0.7 equivalent of epichlorohydrin per aminohydrogen equivalent of the amine in presence of a catalyst dissolved in an inert organic solvent, at a pressure in a range of 200 to 600 mbar; and adding a base to the mixture at a pressure in a range of 200 to 600 mbar to facilitate dehydrochlorination of product of the previous step to obtain the aromatic N- glycidylamine.
This invention relates to a process of making fibril-free lyocell fabric from a fibrillated fabric wherein the fibrillated fabric is contacted with a cross linking agent and metal salt catalyst at 120-210°C for a period ranging from 10 sec to 5 mins to obtain a cross- linked fibrillated fabric, subjecting the cross linked fibrillated fabric to further treatment with an inorganic alkali solution at 60-90°C and 0-10 bar pressure followed by washing with a solution of sodium hexameta phosphate at 60-120°C.
D06M 11/72 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with perphosphoric acids or their salts
D06M 15/29 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acid amides or imides containing a N-sulfido-methylene group
A process for manufacturing low- fibrillating cellulosic fibers by a dry-jet-wet spinning process is provided. The cellulose is treated with a specific ionic liquid based solvent to produce the said fibers with fibrillating index less than or equal to (3).
The present invention provides a process for producing low fibrillating cellulose fibers by a dry-jet- wet spinning process wherein cellulose is treated with a solvent containing imidazolium ionic salt in a spinneret maintained at a temperature of 100-120 0C and the spun fibers drawn to the coagulation bath containing ionic salt with the draw ratio less than 5, to produce fibers with fibrillating index less than or equal to 3.
Yarns and threads; Yarns and threads for woven fabric and textile use; woven fabrics in this class. Textiles and textile goods, not included in other classes; bedding goods; woven fabrics in this class.
