Preparation of copolymer dispersions having a narrow particle si

Details Preparation of copolymer dispersions having a narrow particle si Preparation of copolymer dispersions having a narrow particle si

1981-07-01

1983-02-01

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524560, 524564, 524832, 524833, 524556, C08L 3506

Patent

active

043716369

ABSTRACT:
A process for the preparation of copolymer dispersions having a narrow particle size distribution, and exhibiting dilatant flow over a broad range of concentrations, by emulsion copolymerization of from 1 to 10% by weight, based on total monomers, of .alpha.,.beta.-monoolefinically unsaturated monocarboxylic acids and/or dicarboxylic acids with other monoolefinically unsaturated monomers and with from 0 to 5% by weight of polyolefinically unsaturated monomers in the presence of conventional emulsifiers, dispersants and polymerization initiators, and in the presence or absence of regulators, wherein the monomers are copolymerized in aqueous emulsion, with simultaneous agglomeration but only partial fusion of the initially formed polymer particles, at a temperature near the glass transition temperature of the copolymer formed, and thereafter

REFERENCES:
patent: 3075939 (1963-01-01), Bauer, Jr. et al.
patent: 3770679 (1973-11-01), Corey et al.
patent: 3770680 (1973-11-01), Iacoviello
patent: 3784498 (1974-01-01), Ceska
patent: 4051093 (1977-09-01), Wendel et al.
patent: 4061833 (1977-12-01), Pelletier et al.

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