Acrylic-methylene succinic ester emulsion copolymers for thicken

Details Acrylic-methylene succinic ester emulsion copolymers for thicken Acrylic-methylene succinic ester emulsion copolymers for thicken

1986-01-13

1986-10-07

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

524549, 524558, 526270, C08F 2028

Patent

active

046160744

ABSTRACT:
Acrylic emulsion copolymers are prepared by emulsion polymerization of (A) a surfactant monomer, (B) an .alpha.,.beta.-ethylenically unsaturated carboxylic acid monomer, (C) a nonionic .alpha.,.beta.-ethylenically unsaturated monomer and (D) optionally a polyethylenically unsaturated cross-linking monomer. The surfactant monomer is prepared by condensing a mono or polyhydric alcohol nonionic surfactant with methylene succinic acid. At a low pH the copolymer may be in the form of an aqueous dispersion or latex, but thickens upon neutralization of at least some of the carboxyl groups.

REFERENCES:
patent: 4351754 (1982-09-01), Dupre
patent: 4384096 (1983-05-01), Sonnabend
patent: 4421902 (1983-12-01), Chang et al.

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