Patent ID: 8492472
Filing Date: 2013-07-23
Classification: C08L,C09D,C09J

Abstract:
1. A one- or two-component coating composition comprising at least one polymer dispersion obtained by at least two-stage emulsion polymerization of, in a first stage, (A1) at least one alkyl(meth)acrylate, (B1) optionally at least one vinylaromatic having up to 20 C atoms, (C1) at least one hydroxyalkyl(meth)acrylate, (D1) optionally at least one free-radically polymerizable compound selected from the group consisting of ethylenically unsaturated nitriles having up to 20 C atoms, vinyl esters of carboxylic acids containing up to 20 C atoms, vinyl halides having up to 10 C atoms, and vinyl ethers of alcohols containing 1 to 10 C atoms, (E1) optionally at least one α,β-ethylenically unsaturated carboxylic acid, (F1) optionally at least one crosslinker, (G1) optionally at least one compound selected from the group consisting of 2-(2-oxoimidazolidin-1-yl)ethyl(meth)acrylate, ureidoethyl(meth)acrylate, acetoacetoxyethyl acrylate, acetoacetoxypropyl methacrylate, acetoacetoxybutyl methacrylate, 2-(acetoacetoxy)ethyl methacrylate, diacetoneacrylamide (DAAM), and diacetonemethacrylamide, (H1) optionally at least one compound having a (meth)acrylate group and an epoxy group, and (I1) optionally at least one α,β-ethylenically unsaturated carboxamide, in the presence of at least one initiator and optionally in the presence of at least one emulsifier and also, optionally, in the presence of at least one regulator wherein a copolymer is obtained, with the proviso that said copolymer obtained from the first stage has and the sum of the monomers (C1) and (I1) in said first stage is from 0.5% to 20% by weight, followed by a free-radical polymerization, in a subsequent stage, in the presence of the copolymer prepared in the first stage, of (A2) at least one alkyl(meth)acrylate, (B2) optionally at least one vinylaromatic having up to 20 C atoms, (C2) optionally at least one hydroxyalkyl(meth)acrylate, (D2) optionally at least one free-radically polymerizable compound selected from the group consisting of ethylenically unsaturated nitriles having up to 20 C atoms, vinyl esters of carboxylic acids containing up to 20 C atoms, vinyl halides having up to 10 C atoms, and vinyl ethers of alcohols containing 1 to 10 C atoms, (E2) optionally at least one α,β-ethylenically unsaturated carboxylic acid, (F2) optionally at least one crosslinker, and (G2) optionally at least one compound selected from the group consisting of 2-(2-oxoimidazolidin-1-yl)ethyl(meth)acrylate, ureidoethyl(meth)acrylate, acetoacetoxyethyl acrylate, acetoacetoxypropyl methacrylate, acetoacetoxybutyl methacrylate, 2-(acetoacetoxy)ethyl methacrylate, diacetoneacrylamide (DAAM), and diacetonemethacrylamide, (H2) optionally at least one compound having a (meth)acrylate group and an epoxy group, and (I2) optionally at least one α,β-ethylenically unsaturated carboxamide, optionally followed by one or more further stages of a free-radical polymerization of at least one monomer, the amount of the at least one emulsifier being 0% to 3.5% by weight, based on the total amount of the free-radically polymerizable monomers metered into the free-radical polymerization in all the stages, with the proviso that