Radiation-hardenable aqueous binder emulsions

Details Radiation-hardenable aqueous binder emulsions Radiation-hardenable aqueous binder emulsions

C - Chemistry, Metallurgy

08

F

400/5151, 204/91

C08F 299/02 (2006.01) B05D 3/06 (2006.01)

Patent

CA 1206659

RADIATION-HARDENABLE AQUEOUS BINDER EMULSIONS Abstract of the Disclosure This invention relates to aqueous, radiation- hardenable emulsions produced from mixtures of the following: (A). from 90 to 50 %, by weight, of at least one acrylate prepolymer, containing, per 100 g, from 0.2 to 0.65 mols of (meth)acryloyloxy groups and having a viscosity of from 500 to 300 000 mPa.s, measured at 20°C; (B). from 10 to 50 %, by weight, of at least one emulsifier polyester having a viscosity of from 2 000 to 200 000 mPa.s, containing, per 100 g: (1). from 0.06 to 0.28 mols of condensed units of an .alpha.-.beta.-mono-olefinically unsaturated dicarboxylic acid; (2). from 0.04 to 0.34 mols of benzyloxy groups; and (3). from 30 to 80 %, by weight, based on emulsifier polyester, of alkylene-oxy groups (-alkylene-0-); the sum of (A) and (B) amounting to 100 %, (C). from 25 to 400 %, by weight, of water; and (D). from 0 to 10 %, by weight, of at least one conventional photoinitiator; the percentage contents of (C). and (D). being based on the sum of (A) and (B). The emulsions are used in particular for coating wood and wood-like materials.

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