Aqueous coating composition based on a dispersion of an addition

Details Aqueous coating composition based on a dispersion of an addition Aqueous coating composition based on a dispersion of an addition

1988-03-14

1990-11-27

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524376, 524458, 525376, C08F 216

Patent

active

049736213

ABSTRACT:
Aqueous coating composition having a basis of a dispersion of an addition polymer (acting as binder), particularly as a base coat which is to be covered with a clear coat. To obtain layers having improved mechanical properties use is made of an addition polymeer which is obtained in two or more steps by emulsion polymerization. In a first step copolymerization is effected of 60-95 parts b.w., based on 100 parts b.w. of addition polymer, of a monomer mixture comprising (A) 65-100 mol % of a mixture of 60-100 mole % of a (cyclo)alkyl (meth)acrylate, in which the (cyclo)alkyl group contains 4-12 C-atoms, and 0-40 mole % of a di(cyclo)alkyl maleate and/or a di(cyclo)alkyl fumarate, in which the (cyclo)alkyl groups contain 4-12 C-atoms, and 0-35 mole % of another, copolymerizable, monoalkylenically unsaturated monomer, and in a subsequent step of 5-40 parts b.w., based on 100 parts b.w. of addition polymner, of a monomer mixture (B) of 10-60 mole % of (meth)acrylic acid and 40-90 mole % of another copolymerizable, monoalkylenically unsaturated monomer, the (meth)acrylic acid moieties being at least partially ionized.

REFERENCES:
patent: 4151143 (1979-04-01), Blank et al.
patent: 4456726 (1984-06-01), Siol et al.
patent: 4465803 (1984-08-01), Nakayama
patent: 4468498 (1984-08-01), Kowalski et al.
patent: 4613633 (1986-09-01), Sekiya et al.
patent: 4857577 (1989-08-01), Buter

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