Coating composition

Details Coating composition Coating composition

1977-05-04

1979-01-30

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 296R, 260 296MH, 260 4255, C08L

Patent

active

041372085

ABSTRACT:
Pigmented coating compositions having improved opacity and film strength comprise an aqueous latex of film-forming resin binder, a non-solvent for the resin binder of sufficiently low volatility to produce, upon first removing water from a film of the coating composition and secondly removing said non-solvent, a continuous non-porous microcellular film having minute discrete substantially closed voids, non-film-forming granules of a polymer which is not dissolved by the non-solvent, and pigment and/or extender, which may be present in the latex or the non-solvent or the polymer granules. The polymer granules may be spheroidal beads or aggregates. The non-solvent and the polymer granules alleged to act synergistically to improve the opacity of the paint.

REFERENCES:
patent: 3669729 (1972-06-01), Seiner
patent: 3817880 (1974-06-01), Kreider
patent: 3839253 (1974-10-01), Kershaw et al.
patent: 3941727 (1976-03-01), Timmerman et al.
patent: 3949138 (1976-04-01), Heiser

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