Abstract: This invention relates to urethanes which contain at least one sulphonic acid group and at least two free OH-groups and to a process for the preparation thereof.

Abstract: The instant invention relates to dihydroxy carbamates containing sulphonic acid groups, and to a process for their production. They are obtained by the addition of bisulphites to unsaturated carbamates.

Abstract: The invention relates to a process for the production of a stabilized crosslinkable copolymer of acrylonitrile which comprises copolymerizing at least 65% by weight of acrylonitrile with from 0.1 to 3% by weight of an N-methylol acyl ester of an ethylenically unsaturated carboxylic acid amide, optionally from 0.5 to 5% by weight of an N-methylol alkyl ether of an ethylenically unsaturated carboxylic acid amide and, optionally, at least one other copolymerizable comonomer in an aqueous medium in the presence of a redox catalyst and in the presence of at least one water-soluble compound containing a carboxylic acid amide group.

Abstract: The invention relates to a process for the production of filaments and fibres having a moisture absorption of at least 7% and a water retention capacity of at least 25% by dry-spinning an acrylonitrile copolymer, containing more than 50 mval of carboxyl groups from a solvent, which contains 5 to 50% by weight of a compound with properties defined herein, washing the compound added to the solvent out of the freshly spun filaments and fibres and partly or completely converting the carboxyl groups into the salt form. The invention further relates to dry-spun filaments and fibres having a core and sheath structure, comprising a fibre-forming acrylonitrile copolymer having more than 50 mval of carboxyl and carboxylate groups and having a moisture absorption capacity of at least 7% and a water retention capacity of at least 25%.

Abstract: The invention relates to a copolymer comprising at least 40% by weight of copolymerized acrylonitrile and from 0.5 to 10% by weight of at least one copolymerized unsaturated ester of acetoacetic acid corresponding to the general formula:CH.sub.3 --CO--CH.sub.2 --COO--R--CR'.dbd.CH.sub.2and, optionally, at least one other copolymerized comonomer.

Abstract: The invention relates to a process for the production of crosslinked fibres or filaments by spinning an acrylonitrile copolymer containing at least 20 mVal of carboxyl groups per kg of polymer together with a polyoxazoline in a polar organic solvent and thereafter crosslinking at temperatures of from 120 to 190.degree. C.The invention also relates to crosslinked acrylonitrile fibres and filaments obtainable by this process.

Abstract: The invention relates to a copolymer comprising at least 40% by weight of copolymerized acrylonitrile, from 0.5 to 40% by weight of at least one copolymerized aceto acetate of a mono (meth) acrylate of an aliphatic diol containing from 2 to 8 carbon atoms and, optionally, at least one other copolymerized comonomer.

Abstract: The invention is related to novel polycaprolactam filaments and fibres capable of being deeply dyed with acid dyes to give dye finishes with extreme fastness to light, characterized by the fact that they consist of physical mixtures of unmodified polycaprolactam and a basic polycaprolactam containing structural units corresponding to the formula: ##STR1## in which R represents an alkylene radical with 4 to 12 carbon atoms and x is an integer from 1 to 5, have relative solution viscosities of from 2.9 to 3.5 (as measured on solutions of 1 g of non-extracted polyamide in 100 ml of cresol at 25.degree. C) and contain free amino groups in a concentration range from 60 to 180 millivals per kg of polymer mixture.

Abstract: The invention relates to cross-linkable or cross-linked filaments or fibers of a copolymer comprising at least 65% by weight of acrylonitrile and from 0.5 to 10% by weight of at least one copolymerised N-methylol compound of an unsaturated mono- or bis-urethane or an alkyl ether thereof and, optionally, at least one other copolymerisable monomer.

Abstract: The invention relates to a process for the production of stabilized, crosslinkable copolymers of acrylonitrile with N-methylol alkyl ethers of unsaturated carboxylic acid amides and optionally other comonomers by polymerizing in the presence of a stabilizer compound containing a carboxylic acid amide group such as amide, urea or lactam.

Abstract: The invention relates to a process for the production of crosslinkable polymers of acrylonitrile by polymerising acrylonitrile with a crosslinking component and optionally other comonomers in strongly polar organic solvents and in the presence of a peroxodisulphate and a 1,3-diketone as initiator system.

Abstract: The instant invention relates to dihydroxy sulphonates containing ether groups, and to a process for their production. They are obtained by the addition of bisulphites to (poly)alkoxylated dihydroxy alkenes.

Abstract: This invention relates to the production of spinnable solutions of acrylonitrile homopolymers or acrylonitrile copolymers in which the polymerization is conducted in an organic solvent containing a catalyst system comprising an acid, e.g., sulfuric acid, a peroxodisulfate, e.g., ammonium peroxodisulfate, and a 1,3-diketone, e.g., acetyl acetone. Polymers having a good natural color and high K-values are obtained in good yields.

Abstract: The instant invention relates to sulphonates containing ether groups and derived from dihydroxy alkane sulphonic acids, and to a process for their production. They are obtained by the addition of bisulphites to (poly)alkoxylated dihydroxy alkenes.

Abstract: High molecular weight polyesters from terephthalic acid and 1,4 cyclohexane dimethanol, containing in polycondensed form a polytetrahydrofurane diol Fibers and filaments produced from these polyesters can be dyed carrier-free.

Abstract: The invention relates to a process for the production of solutions of substantially water-insoluble complex antimony compounds in polar organic solvents by esterifying an .alpha.-hydroxy polycarboxylic acid with a polyol, reacting an excess of the esterification product with an antimony oxide in a polar organic solvent and reacting the free carboxylic groups with a monoisocyanate.

Abstract: The invention relates to solutions of complex antimony compounds substantially insoluble in water which are produced by reacting antimony oxides with .alpha.-hydroxy carboxylic acids and further reaction with monoisocyanates as well as a process for the production of these solutions.The solutions according to the invention may be added to solutions of acrylonitrile polymers and copolymers and they improve the non-inflammability of shaped articles produced thereof.

Abstract: The invention relates to polyamide compositions of high-molecular weight, linear aliphatic polyamides with reduced surface resistance which are produced by solvent-free condensation of salts of aliphatic diamines and aliphatic dicarboxylic acids and/or of lactams and in which polyester amides which have been obtained by condensation of dicarboxylic acids or their derivatives, diols and primary-secondary aliphatic diamines are homogeneously distributed.

Abstract: The invention relates to flame-proof copolymers of acrylonitrile and vinyl or vinylidene halide which contain from 0.1 to 5 % by weight of antimony in form of a water-insoluble amide-group containing antimony complex compound.

Abstract: The invention relates to a composition of matter which comprises A) from 95 to 99.9 % by weight of a copolymer of acrylonitrile, a vinyl and/or vinylidene halide and, optionally, at least one other copolymerisable compound; and B) from 0.1 to 5 % by weight of a substantially water-insoluble complex antimony compound containing amide groups, the complex antimony compound being obtainable by esterifying an .alpha.-hydroxy polycarboxylic acid with a polyol, reacting the esterification product with an antimony oxide in a polar organic solvent adding a monoisocyanate to the resulting solution in such a quantity that the free carboxyl groups are converted into the corresponding amide groups, and a process for the production of these compositions of matter.