Stable dispersions of polymers in polyfunctional active hydrogen

Details Stable dispersions of polymers in polyfunctional active hydrogen Stable dispersions of polymers in polyfunctional active hydrogen

1983-12-09

1984-10-16

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

252182, 528 75, 521127, 521128, 521120, 521114, C08G 1814, C08G 1863, C08L 7500

Patent

active

044776039

ABSTRACT:
A stable copolymer dispersion is prepared by addition copolymerization of (1) a monomeric adduct of an active hydrogen compound, e.g., a polyether polyol or polyether monool, and an ethylenically unsaturated haloformate compound such as acryloxyethylchloroformate with (2) ethylenically unsaturated monomer(s), e.g., styrene or a mixture thereof with acrylonitrile, while (1) and (2) are dispersed or dissolved in an excess of an active hydrogen polyfunctional compound such as a polyether polyol. The molar ratio of haloformate moiety to active hydrogen compound is preferably less than about 0.1:1. The resulting dispersion has a controlled particle size and a viscosity such that it is suitably employed in the production of polyurethane foams.

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