摘要:
An insoluble biocatalyst is prepared by forming a mixture consisting essentially of the biocatalyst, one or more water-soluble compounds having two or more acrylamide or meth-acrylamido groups and one or more water soluble amines possessing two or more hydrogen atoms bonded to an amine nitrogen, and forming a gel from the mixture. The water-soluble amine is selected from ammonia, lower diamines, lower polyamines, primary monoamines, polyethyleneimine and polyvinylamine. Beads containing the biocatalyst may be formed by suspending the mixture in a water-immiscible solvent to form droplets prior to gelling. The biocatalyst may be an enzyme, cells or cell fragments.
摘要:
A biologically active protein which is bonded to a water-insoluble porous copolymer based on N-vinylimidazole and/or substituted N-vinylimidazoles and monomers which can be copolymerized therewith, its preparation and its use for carrying out enzymatic reactions.
摘要:
Process for the preparation of solid pharmaceutical forms by mixing one or more pharmaceutical active compounds with one or more fusible, pharmacologically tolerated binders and, if required, other conventional pharmaceutical auxiliaries, at from 50.degree. to 180.degree. C., and subjecting the mixture to injection molding or extrusion and shaping, wherein the fusible binder used is a NVP polymer which contains not less than 20% by weight of NVP as copolymerized units, and, where they are present, all of whose comonomers contain nitrogen and/or oxygen.
摘要:
A process for the preparation of insoluble, only slightly swellable, granular polymers of basic vinyl-heterocyclic compounds and of their copolymers with up to 30% by weight of copolymerizable monomers and 0.1-10% by weight of crosslinking agent by exclusion of (atmospheric) oxygen from the mixture of monomer and crosslinking agent, without addition of any initiator or catalyst, and the use of the polymers obtained as ion exchangers, adsorbents and carriers for proteins.
摘要:
3-Methyl-1-vinylimidazolium chlorides are prepared by quaternizing N-vinylimidazoles in aqueous solution with methyl chloride and are used for the preparation of water-soluble homo- or copolymers.
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.