摘要:
Bonded textile sheet materials having improved water vapor absorbency can be manufactured by bonding the sheets with polymeric binders and additionally impregnating these sheets with glycidyl ethers, chlorohydrin compounds corresponding thereto and/or reaction products of the chlorohydrin compounds with compounds containing NH groups, and drying the impregnated sheets at elevated temperatures and at the same time fixing the impregnants by means of compounds containing NH groups.
摘要:
A process for improving the water absorption of textile sheet structures bonded by means of a polymer solution or dispersion, by the application and fixation of a polyglycol ether derivative containing at least two aziridine rings.
摘要:
Enzymes are immobilized by mixing the following components with one another in aqueous solution:(a) an enzyme or a dispersed microorganism,(b) a water-soluble glycidyl ether, prepared by subjecting from 1 to 30 equivalents of an epoxide of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or ethyl, to an addition reaction with 1 equivalent (based on OH groups) of a polyfunctional alcohol of 2 to 6 carbon atoms or of a mono- or disaccharide to produce an adduct, reacting the adduct with epichlorohydrin and, if required, then carrying out cyclization to give the epoxide, and(c) a water-soluble amine possessing two or more NH groups, if necessary in a partially neutralized form,and allowing the mixture thus obtained to gel.
摘要:
A cosmetic composition comprising at least one water-soluble or water-dispersible polymer which comprises, in copolymerized form, a) at least one α,β-ethylenically unsaturated monomer of the formula I in which R1 is hydrogen or C1-C8-alkyl, and X1 is O or NR2, where R2 is hydrogen, C1-C8-alkyl or if C5-C8-cycloalkyl, b) at least one α,β-ethylenically unsaturated mono- and/or dicarboxylic acid, c) at least one compound having at least one α,α-ethylenically unsaturated double bond and at least 5 alkylene oxide units per molecule, d) at least one compound having at least one α,β-ethylenically unsaturated double bond and at least one straight-chain or branched C8-C30-alkyl or -alkylene radical per molecule, where the components c) and/or d) can be partially or completely replaced by a component e), where e) is at least one compound having at least one α,β-ethylenically unsaturated double bond, at least 5 alkylene oxide units and at least one straight-chain or branched C8-C30-alkyl or -alkylene radical per molecule, or the salts thereof.
摘要:
The present invention relates to the use of copolymers A containing a) from 50 to 99% by weight of at least one N-vinyllactam or N-vinylamine selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone, N-vinylcaprolactam, N-vinylimidazole, methylated N-vinylimidazole, and N-vinylformamide, and b) from 1 to 50% by weight of at least one monomer selected from the group consisting of b1) C8-C30-alkyl esters of monoethylenically unsaturated C3-C8 carboxylic acids; b2) N—C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8 carboxylic acids; b3) N,N—C8-C30-dialkyl-substituted amides of monoethylenically unsaturated C3-C8 carboxylic acids; b4) vinyl esters of aliphatic C8-C30 carboxylic acids; and b5) C8-C30-alkyl vinyl ethers to produce membranes.
摘要翻译:本发明涉及含有a)50至99重量%的至少一种N-乙烯基内酰胺或N-乙烯胺的共聚物A的用途,所述N-乙烯基内酰胺或N-乙烯胺选自N-乙烯基吡咯烷酮,N-乙烯基哌啶酮,N-乙烯基己内酰胺,N 乙烯基咪唑,甲基化N-乙烯基咪唑和N-乙烯基甲酰胺,以及b)1至50重量%的至少一种选自b 1 C 8的单体, 单烯键式不饱和C 3 -C 8羧酸的烷基酯; B 2 N 2 N 8 -C 30 -C 30 - 单烯属不饱和C 3 -C 3 - 亚烷基取代的酰胺 > 8 u>羧酸; B 3 N N,NC 8 -C 20 - 二烷基 - 取代的单烯属不饱和C 3 -C 3 - 酰胺 8%羧酸; 脂族C 8 -C 30羧酸的乙烯基酯; 和B 5 C 8 -C 30 - 烷基乙烯基醚以产生膜。
摘要:
The use is described of particulate, water-insoluble and scarcely swellable polymers of ethylenically unsaturated monomers, which polymers contain, copolymerized, at least 20% by weight, based on the total weight of the monomers, of at least one &agr;,&bgr;-monoethylenically unsaturated monocarboxylic acid having from 3 to 6 carbons as filter aid for filtering aqueous liquids. Subject-matter of the invention are also water-insoluble, scarcely swellable polymers (popcorn polymers) that contain, copolymerized, &agr;,&bgr;-monoethylenically unsaturated carboxylic acids and styrene or styrene derivatives, and also a process for their preparation.
摘要:
The use of polymers which are obtainable by polymerization of a) at least one vinyl ester of aliphatic C1-C24-carboxylic acids in the presence of b) polyethers of the general formula I, in which the variables have, independently of one another, the meanings mentioned in the description, as coating agent, binder and/or film-forming excipient in pharmaceutical presentations.
摘要:
Insoluble, only slightly swellable popcorn polymers containing a) from 50 to 99% by weight of styrene and/or at least one monounsaturated styrene derivative, b) from 0.1 to 40% by weight of at least one N-vinyllactam or N-vinylamine and c) from 0.1 to 10% by weight of at least one difunctional crosslinking component, the stated percentages by weight of the individual components a) to c) summing to 100%.
摘要:
The present invention relates to crosslinked, water-soluble or water-dispersible polyurethanes of A) at least one water-soluble or water-dispersible polyurethane prepolymer having terminal isocyanate groups of a) at least one compound having a molecular weight in the range from 56 to 300 which contains two active hydrogen atoms per molecule, b) at least one polymer containing two active hydrogen atoms per molecule, c) at least one compound which contains two active hydrogen atoms and at least one ionogenic or ionic group per molecule, d) at least one diisocyanate, B) at least one polymer containing groups which are reactive toward isocyanate groups, chosen from hydroxyl, and primary and secondary amino and/or carboxyl groups, or the salts thereof.