Patent application number | Description | Published |
20090050860 | Fibers comprising copolymers containing structures derived from a plurality of amine monomers including 4,4" diamino diphenyl sulfone and methods for making same - The invention concerns a fiber derived from a plurality of amine monomers, including 4,4′diaminodiphenyl sulfone amine monomer, and at least one acid monomer; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments. | 02-26-2009 |
20090053500 | Fibers comprising copolymers containing structures derived from 4,4 diamino diphenyl sulfone and a plurality of acid monomers and methods of making same - The invention concerns a fiber, obtainable by spinning a copolymer from the polymerization solution, derived from 4,4′diaminodiphenyl sulfone amine monomer and a plurality of acid monomers, wherein the plurality of acid monomers has 55 to 85 mole percent of the monomer containing a para-oriented aromatic group and 15 to 45 mole percent of the monomer containing a meta-oriented aromatic group; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments. | 02-26-2009 |
20090053501 | Fibers comprising copolymers containing structures derived from a plurality of amine monomers including 4,4' diamino diphenyl sulfone and methods for making same - The invention concerns a fiber, obtainable by spinning a copolymer from the polymerization solution, derived from a plurality of amine monomers, including 4,4′diaminodiphenyl sulfone amine monomer, and at least one acid monomer; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments. | 02-26-2009 |
20090053951 | Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and textile fibers and fabrics and garments made therefrom and methods for making same - This invention relates to a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 25 to 90 parts by weight of a polymeric staple fiber containing a structure derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; and 10 to 75 parts by weight of a textile staple fiber having limiting oxygen index of 21 or greater, based on 100 parts by weight of the polymeric fiber and the textile fiber in the yarn. | 02-26-2009 |
20090053952 | Spun staple yarns made from blends of rigid-rod fibers and fibers derived from diamino diphenyl sulfone and fabrics and garments made therefrom and methods for making same - This invention relates to a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 20 to 50 parts by weight of a polymeric staple fiber containing a structure derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; and 50 to 80 parts by weight of a rigid-rod staple fiber, based on 100 parts by weight of the polymeric fiber and the rigid-rod fiber in the yarn. | 02-26-2009 |
20090053954 | Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and high modulus fibers and fabrics and garments made therefrom and methods for making same - This invention relates to a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 50 to 95 parts by weight of a polymeric staple fiber containing a structure derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; and 5 to 50 parts by weight of a high modulus staple fiber having a tensile modulus of 200 grams per denier (180 grams per dtex) or greater or greater, based on 100 parts by weight of the polymeric fiber and the high modulus fiber in the yarn. | 02-26-2009 |
20090053955 | Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and modacrylic fibers and fabrics and garments made therefrom and methods for making same - This invention relates to a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 50 to 95 parts by weight of a polymeric staple fiber containing a structure derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; and 5 to 50 parts by weight of a polyoxadiazole fiber or greater, based on the total amount of the polymeric fiber and the polyoxadiazole fiber in the yarn. | 02-26-2009 |
20090053956 | Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone, low thermal shrinkage fibers, flame resistant fibers, and antitstatic fibers and fabrics and garments made therefrom and methods for making same - The invention concerns a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have at least 25 parts by weight of a polymeric staple fiber containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; 2 to 15 parts by weight of a fiber having low thermal shrinkage; 1 to 5 parts by weight of an antistatic fiber; and the remainder being flame resistant fibers having a limiting oxygen index of 21 or greater, based on 100 total parts by weight of the polymeric fiber, the low thermal shrinkage fiber, the antistatic fiber, and the flame resistant fibers in the yarn. | 02-26-2009 |
20090053961 | Fibers comprising copolymers containing structures derived from 4,4' diamino diphenyl sulfone and a plurality of acid monomers and methods of making same - The invention concerns a fiber derived from 4,4′diaminodiphenyl sulfone amine monomer and a plurality of acid monomers; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments. | 02-26-2009 |
20090054617 | Fibers comprising copolymers containing structure derived from a plurality of amine monomers including 3,3' diamino diphenyl sulfone and method for making same - The invention concerns a fiber derived from a plurality of amine monomers, including 3,3′diaminodiphenyl sulfone amine monomer, and at least one acid monomer; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments. | 02-26-2009 |
20090061196 | Fibers comprising copolymers containing structures derived from a plurality of amine monomers including 3,3 diamino diphenyl sulfone and methods for making same - The invention concerns a fiber obtainable by spinning a copolymer from the polymerization solution, derived from a plurality of amine monomers, the plurality including 3,3′diaminodiphenyl sulfone amine monomer and at least one amine monomer having an aromatic group that is a para-oriented benzene ring, and at least one acid monomer; and yarns, fabrics and garments comprising this fiber, and methods of making the same. This fiber has use in heat-resistant protective apparel fabrics and garments. | 03-05-2009 |
20090159226 | Papers containing fibrids derived from diamino diphenyl sulfone - This invention relates to papers made with fibrids containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof. Such papers have high thermal stability and accept ink more readily than papers made solely with aramid fibrids. | 06-25-2009 |
20090159227 | Papers containing fibrids derived from diamino diphenyl sulfone - This invention relates to papers made with fibrids containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof. Such papers have high thermal stability and accept ink more readily than papers made solely with aramid fibrids. | 06-25-2009 |
20090162605 | Papers containing floc derived from diamino diphenyl sulfone - This invention relates to papers made with floc containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof. Such papers have higher elongation-at-break and work-to-break (toughness) properties and exhibit less shrinkage at high temperatures than papers made with solely with poly (metaphenylene isophthalamide) floc. | 06-25-2009 |
20090188024 | FLAME RESISTANT SPUN STAPLE YARNS MADE FROM BLENDS OF FIBERS DERIVED FROM DIAMINO DIPHENYL SULFONE, LOW THERMAL SHRINKAGE FIBERS, FLAME RESISTANT FIBERS, AND ANTITSTATIC FIBERS AND FABRICS AND GARMENTS MADE THEREFROM AND METHODS FOR MAKING SAME - The invention concerns a flame-resistant spun staple yarns and fabrics and garments comprising these yarns and methods of making the same. The yarns have 50 to 75 parts by weight of a polymeric staple fiber containing a polymer or copolymer derived from a monomer selected from the group consisting of 4,4′diaminodiphenyl sulfone, 3,3′diaminodiphenyl sulfone, and mixtures thereof; 2 to 15 parts by weight of a fiber having low thermal shrinkage; 1 to 5 parts by weight of an antistatic fiber; and the remainder being flame resistant fibers having a limiting oxygen index of 21 or greater, based on 100 total parts by weight of the polymeric fiber, the low thermal shrinkage fiber, the antistatic fiber, and the flame resistant fibers in the yarn. | 07-30-2009 |
20090311935 | POLYARENAZOLE MICROFILAMENTS AND PROCESS FOR MAKING SAME - Provided is a polymer filament having an average diameter of about 20 to 5000 nm, the filament comprising a polyarenazole polymer having an inherent viscosity of greater than about 20 g/dl. Also provided are yarns comprising such filaments. Additional aspects concern fabrics and garments comprising such filaments and/or yarns. | 12-17-2009 |
20140325767 | METHOD FOR REMOVING SULFUR FROM FIBER USING HALIDE ACID ION EXCHANGE - The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion-containing polymeric-fiber with an halide-containing acid to displace at least a portion of the sulfate ions with halide anions; and b) rinsing the fiber to remove the displaced sulfate ions. | 11-06-2014 |
20140331415 | PROCESS FOR PREPARING ARAMID COPOLYMER YARN USING A HALIDE ACID WASH - The present invention concerns methods for removing sulfur from yarn comprising the steps of: a) contacting never-dried polymeric yarn with an aqueous base, the polymer comprising imidazole groups and said polymer comprising sulfur atoms characterized as being in the form of sulfate anions; b) contacting the yarn with an aqueous acid comprising a halide; and c) rinsing the yarn. | 11-13-2014 |
20140336351 | METHOD FOR REMOVING SULFUR FROM FIBER USING A WEAK BASE - The present invention concerns methods for removing sulfur from a fiber comprising the steps of: a) contacting never-dried sulfur-containing fiber in a yarn with an aqueous base having a pKa less than or equal to 11 to release at least a portion of said sulfur, said sulfur comprising, at least in part, sulfate anions and said yarn comprising fiber derived from polymer comprising imidazole groups; and b) rinsing said yarn to remove at least a portion of released sulfur. | 11-13-2014 |
20140353858 | PROCESS FOR PREPARING ARAMID COPOLYMER YARN HAVING LOW RESIDUAL SULFUR - The present invention concerns methods for producing a yarn comprising the steps of: (a) producing a plurality of dope filaments by spinning a polymer solution in sulfuric acid through a multi-hole spinneret, the polymer comprising imidazole groups; (b) coagulating the plurality of dope filaments into an as-spun yarn; (c) contacting the yarn with an aqueous base having a pKa less than or equal to 11; and (d) rinsing the yarn. | 12-04-2014 |
20140356610 | SULFUR-CONTAINING IMIDAZOLE FIBER HAVING IONICALLY BONDED HALIDES - The present invention concerns fiber made from a polymer comprising imidazole groups, fiber further having: i) a halide anion, the halide anion being present in an amount of 0.05 to 20.1 weight percent, based on weight of fiber; and ii) sulfur, wherein the sulfur is present in the fiber in an amount of 0.05 to 3 weight percent. | 12-04-2014 |
20140356611 | SULFUR AND ALKALI METAL CONTAINING IMIDAZOLE FIBER HAVING IONICALLY BOUND HALIDES - The present invention concerns fiber made from a polymer comprising imidazole groups, the polymer further having: i) halide anions being present in an amount in the range of 0.05 to 20.1 weight percent, based on weight of fiber; ii) sulfur, wherein the sulfur is present in the fiber in an amount in the range of 0.05 to 3 weight percent, based on weight of fiber; and iii) alkali metal ion, wherein the alkali metal ion is present in the fiber in an amount in the range of 0.05 to 2 weight percent, based on weight of fiber. | 12-04-2014 |
20140357834 | ARAMID COPOLYMER YARN HAVING LOW RESIDUAL SULFUR - The present invention concerns yarn comprising polymer, the polymer comprising imidazole groups, the yarn having a sulfur content of 0.01 to 3.0 percent by weight, based on weight of the yarn, the yarn having a tenacity of 30 cN/dtex (33.3 gpd) or higher. | 12-04-2014 |
20150007859 | PROCESS FOR PREPARING ARAMID COPOLYMER YARN USING AN ACID WASH - The present invention concerns methods for removing sulfur from yarn comprising the steps of: a) contacting never-dried polymeric yarn with an aqueous base, the polymer comprising imidazole groups and said polymer comprising sulfur atoms characterized as being in the form of sulfate anions; b) contacting the yarn with an aqueous acid solution of pH 5 or lower; and c) rinsing the yarn. | 01-08-2015 |
20150021812 | PROCESS FOR PREPARING YARN DERIVED FROM ARAMID COPOLYMER FIBER HAVING LOW RESIDUAL SULFUR - The present invention concerns processes for producing a yarn comprising polymer comprising imidazole groups, the process having the following steps: (a) spinning a solution of polymer in sulfuric acid to give rise to a plurality of dope filaments; (b) coagulating the plurality of dope filaments into a multi-filament as-spun yarn; and (c) washing the as-spun multi-filament yarn with an aqueous acid comprising a halide or an aqueous salt comprising a halide or combination thereof. | 01-22-2015 |
20150047130 | METHOD FOR REMOVING SULFUR FROM FIBER USING AN AQUEOUS ACID - The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: contacting never-dried sulfate anion-containing polymeric-fiber with an aqueous acid having a pKa of less than 5 to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove the displaced sulfate ions. | 02-19-2015 |
20150073118 | METHOD FOR REMOVING SULFUR FROM FIBER USING HALIDE SALT ION EXCHANGE - The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with an aqueous salt solution comprising halide anions to displace at least a portion of the sulfate anions with halide anions; and b) rinsing the fiber to remove displaced sulfate anions. | 03-12-2015 |
20150073119 | METHOD FOR REMOVING SULFUR FROM FIBER USING MONOVALENT SALT ION EXCHANGE - The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with aqueous salt having monovalent anions to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove displaced sulfate anions. | 03-12-2015 |