Patent ID: 9567484
Date: 2017-02-14
CPC Classifications: C09D

Claim:
1. An aqueous hybrid binder, comprising: (A) from 0.01%-5% by weight of a photoinitiator, based on 100% of the binder; and (B) an aqueous polymer dispersion (PD) comprising a polymer (P) and an alkyd-containing component, wherein: the polymer (P) comprises, in polymerized form, an α,β-ethylenically unsaturated monomer (M), and optionally a further monomer (M1): the alkyd containing component is (a) a water-soluble alkyd resin having a weight-average molecular weight of between 5000 and 40 000 Da, (b) an aqueous alkyd emulsion or dispersion, or (c) a polyurethane-alkyd emulsion or dispersion; and the aqueous polymer dispersion is obtained by a process comprising (i) directly subsequent to the polymerization of M and M1, and optionally the chemical deodorization, at room temperature, (ii) subsequent to the polymerization of M and M1, with an after stir time of 0-2 h, or (iii) subsequent to the chemical deodorization, with an after stir time of 0-2 h, wherein a temperature of addition according to (ii) or (iii) is from 60 to 99° C.