Abstract:
In order to prepare an antibacterial and fungicidal polymer dispersion, a polymer dispersion is mixed with an amount of a protective polymer which is dispersible in the polymer dispersion, said amount being sufficient to attain an antibacterial and fungicidal effect. The protective polymer comprises: between 3 and 60 wt %, relative to the total weight of components a) and b) without metallic ions, of at least one C3 to C7 alpha, beta-monoethylenically unsaturated mono or dicarboxylic acid which is partially or completely neutralized or can be present as an anhydride, as component a); between 97 and 40 wt %, relative to the total weight of components a) and b) without metallic ions, of at least one C1 to C20 alkyl(meth)acrylate, of a C1 to C20 carboxylic acid vinyl ester, of a vinyl aromatic containing up to 20 carbon atoms, of an ethylenically unsaturated C3 to C6 nitrile, of a vinyl halide or a non-aromatic C4 to C8 hydrocarbon and at least two conjugated double bonds or ethylene or propylene as component b); between 0 and 50 wt %, relative to the total weight of components a) and b) without metallic ions, of at least one further ethylenically unsaturated monomer, as component c); and between 0 and 20 wt %, relative to the total weight of components a), b) and c) without metallic ions, of at least one cross-linking polyfunctional monomer, as component d). Between 1 and 100 mol % of the acid groups are converted into salts of at least one antibacterial and/or fungicidal metallic ion.
Abstract:
The present invention relates to a method for producing a polymer dispersion by radical polymerization of an aqueous monomer emulsion, characterized in that the monomer emulsion is produced continuously in accordance with consumption. 00000
Abstract:
The invention relates to a method for producing a polymer dispersion by radical polymerization of an aqueous monomer emulsion in a semibatch process wherein the monomer emulsion is produced continuously in accordance with consumption, and wherein the components of the monomer emulsion are mixed in at least one mixing apparatus to give the emulsion.
Abstract:
A polymer dispersion is prepared by free radical polymerization of an aqueous monomer emulsion by a process in which the monomer emulsion is prepared continuously at the rate of consumption.
Abstract:
A polymer dispersion is prepared by free radical polymerization of an aqueous monomer emulsion by a process in which the monomer emulsion is prepared continuously at the rate of consumption.
Abstract:
A method for cooling dispersions or liquids (D/L) after a deodorising process comprising (a) passing steam through the D/L in a boiler (1), causing it to foam, (b) taking the foam from the top of the boiler into an evacuated separator (4) through a jet (5) and thus breaking the foam, (c) condensing the water vapour from the foam in a heat exchanger (8) and removing organic volatiles, and (d) returning the broken foam to (1). This process is continued until the D/L is deodorised to the required extent, then the hot D/L is cooled by transferring it from the bottom of (1) to the evacuated separator (4) via jet (5), the water vapour produced is condensed in (8) as before, and the cooled D/L is taken off at the bottom of (4).
Abstract:
PCT No. PCT/EP93/01395 Sec. 371 Date Dec. 13, 1994 Sec. 102(e) Date Dec. 13, 1994 PCT Filed Jun. 3, 1993 PCT Pub. No. WO93/25588 PCT Pub. Date Dec. 23, 1993A dispersion or solution of a free radical polymer, polycondensate or polyadduct, which consist of from 0.001 to 20% by weight of aldehyde groups -CHO or keto groups -CO-, contains, as a crosslinking agent, a compound having at least two H2N-O--groups or oxime ether groups derived therefrom.
Abstract:
PCT No. PCT/EP93/01396 Sec. 371 Date Dec. 9, 1994 Sec. 102(e) Date Dec. 9, 1994 PCT Filed Jun. 3, 1993 PCT Pub. No. WO93/25519 PCT Pub. Date Dec. 23, 1993.Copolymerizable oxime ethers of the general formula I where A is a divalent link, R1 may be hydrogen or C1-C4-alkyl and R2 and R3 independently of one another are each hydrogen or C1-C10-alkyl, C1-C10-alkoxy, C5-C10-cycloalkyl or C5-C10-aryl, each of which may furthermore contain 1-3 nonadjacent nitrogen, oxygen or sulfur atoms as hetero atoms in the carbon chain or in the carbon ring and may be substituted by C1-C4-alkyl or C1-C4-alkoxy groups, R2 or R3 may each be hydrogen or R2 and R3 together form a bridge of 3 to 14 carbon atoms, where some of the carbon atoms may also be part of an aromatic ring.
Abstract:
PCT No. PCT/EP93/01395 Sec. 371 Date Dec. 13, 1994 Sec. 102(e) Date Dec. 13, 1994 PCT Filed Jun. 3, 1993 PCT Pub. No. WO93/25588 PCT Pub. Date Dec. 23, 1993A dispersion or solution of a free radical polymer, polycondensate or polyadduct, which consist of from 0.001 to 20% by weight of aldehyde groups -CHO or keto groups -CO-, contains, as a crosslinking agent, a compound having at least two H2N-O--groups or oxime ether groups derived therefrom.
Abstract:
The invention relates to copolymers built up from a) from 0.01 to 40% by weight of a copolymerised, ethylenically unsaturated compound containing at least one oxime-blocked isocyanate group, b) from 30 to 99.99% by weight of at least one C1 to C20-alkyl (meth)acrylate, vinyl ester of carboxylic acids containing 1 to 20 carbon atoms, vinylaromatic compounds up to 20 carbon atoms, ethylenically unsaturated nitrile having 3 to 6 carbon atoms, vinyl halide or nonaromatic hydrocarbon having 4 to 8 carbon atoms and at least 2 conjugated double bonds, c) from 0 to 30% by weight of at least one comonomer containing at least one ketone or aldehyde group, and d) from 0 to 50% by weight of at least one further monomer.