摘要:
A membrane of substantially non-crosslinked organic polymers which contain ionogenic groups bonded to the polymer chain via an alkylene radical, at intervals of not less than 4 carbon atoms.
摘要:
A membrane of a substantially non-crosslinked organic polymer which contains complex-forming groups bonded to the polymer chain via an alkylene radical, at intervals of not less than 4 carbon atoms.
摘要:
A process for the preparation of an enzymatically active formulation embedded in silica gel, wherein an aqueous mixture of an enzymatically active formulation and a dissolved alkali metal silicate and/or ammonium silicate is suspended in an organic, water-immiscible fluid and then converted to a water-insoluble gel.
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:
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.
摘要:
The invention relates to the use of at least one copolymer obtainable by (i) free-radically initiated copolymerization of a monomer mixture comprising (a) 1 to 99.99% by weight of at least one monomer chosen from N-vinylimidazoles and diallylamines optionally in partially or completely quaternized form; (b) 0 to 98.99% by weight of at least one neutral or basic water-soluble monomer which is different form (a); (c) 0 to 50% by weight of at least one unsaturated acid or unsaturated anhydride, (d) 0 to 50% by weight of at least one free-radically copolymerizable monomer which is different from (a), (b) or (c); and (e) 0.01 to 10% by weight of at least one monomer which acts as crosslinker and has at least two ethylenically unsaturated, nonconjugated double bonds; and (ii) subsequent partial or complete quaternization or protonation of the polymer in the case where the monomer (a) is unquaternized or only partially quaternized, as additive for skin cosmetic and dermatological preparations.
摘要:
The present invention relates to polymers, polyureas and water-soluble or water-dispersible polymeric salts, a cosmetic or pharmaceutical composition which comprises at least one such polymer, and to the use of the polymers.
摘要:
The invention relates to cosmetic formulation comprising polymers to which groups of the formula I are bonded where R is H or identical or different organic radicals, which may also be bonded to one another, and G is O or NH, as hair-setting polymers.
摘要:
The use of polyurethanes which are—soluble or dispersible in water and are composed of a) at least one compound which contains two or more active hydrogens per molecule, b) at least one diol containing acid groups or salt groups and c) at least one diisocyanate with a glass transition temperature of at least 15° C. and acid numbers of from 12 to 150 or the salts of these polyurethanes as aids in cosmetic and pharmaceutical compositions, and of polyurethanes which are soluble or dispersible in water and which contain (a) at least 5 mol % of a polycondensate of lactic acid and of a polyol of the formula where Y is a radical derived from a dihydric to tetrahydric alcohol n is 1-50 and m is 1-4 as copolymerized units.