Aqueous synthetic resin dispersions

Details Aqueous synthetic resin dispersions Aqueous synthetic resin dispersions

C - Chemistry, Metallurgy

08

L

400/9046, 400/90

C08L 25/04 (2006.01) C08F 236/12 (2006.01) C08F 265/08 (2006.01) C08F 279/02 (2006.01) C08L 33/20 (2006.01) C08L 33/24 (2006.01) C08L 47/00 (2006.01) C14C 11/00 (2006.01)

Patent

CA 2009182

Abstract of the Disclosure: Aqueous synthetic resin dis- persions are obtainable by copolymerizing A) from 70 to 97.5 parts by weight of a monomer mixture containing a) from 40 to 75% by weight of butadiene (monomer I), b) from 25 to 60% by weight of acrylonitrile (monomer II), c) from 0 to 25% by weight of styrene (monomer III), d) from 0 to 10% by weight of one or more amides of .alpha.,.beta.monoethylenically unsaturated monocarboxylic acids of 3 to 5 carbon atom (monomers IV) and e) from 0 to 10% by weight of other copolymerizable monomers (monomers V) and B) from 2.5 to 30 parts by weight of one or more co- polymerizable monovinyl compounds (monomers VI) in aqueous emulsion at from 30 to 70°C by a method in which not less than 50% by weight of the monomer mixture A is prepolymerized to a conversion of not less than 80%, and the polymerization is then continued with the addi- tion of the remaining monomers A and the monomer B. These dispersions are suitable as binders for protective coats on leather.

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