Vinyl chloride resin compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525343, 525302, 525317, C08L 5300

Patent

active

041794818

ABSTRACT:
Vinyl chloride resin composition comprising vinyl chloride series resin and a two stage polymerization product comprising methyl methacrylate or a monomeric mixture containing a major proportion of methyl methyacrylate subjected to emulsion polymerization and then in the presence of the resulting rigid thermoplastic phase an elastomer phase is formed onto the surface of the rigid thermoplastic phase by polymerizing a monomeric mixture containing a major proportion of an acrylic acid ester and/or a methacrylic acid ester, esclusive of methyl methacrylate.

REFERENCES:
patent: 2992203 (1961-07-01), Protzmann
patent: 3251904 (1966-06-01), Souder et al.
patent: 3655825 (1972-04-01), Souder et al.
patent: 3657172 (1972-04-01), Gallagher et al.
patent: 3808180 (1974-04-01), Owens
patent: 3943190 (1976-03-01), Abe et al.

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