Graft polyblend flow improvers for PVC

Details Graft polyblend flow improvers for PVC Graft polyblend flow improvers for PVC

1978-08-10

1980-07-15

Turer, Richard B.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525309, 525316, 525322, 525324, C08L 2300

Patent

active

042129583

ABSTRACT:
Graft polyblends prepared by polymerizing acrylate ester monomers or mixtures of acrylate ester monomers and vinyl aromatic monomers in the presence of a rubbery saturated hydrocarbon polymer substrate are useful as modifiers for PVC, imparting improved flow and impact properties to PVC formulations when employed at low levels. The rubbery saturated hydrocarbon substrates useful for these purposes include mono-olefin polymers such as polyisobutylene, rubbery copolymers such as EPR, and rubbery hydrogenated polymers and copolymers of conjugated dienes.

REFERENCES:
patent: 2731439 (1956-01-01), Jones et al.
patent: 3435096 (1969-03-01), Limbert et al.
patent: 3595942 (1971-07-01), Wald et al.
patent: 3642950 (1972-02-01), O'Shea
patent: 3849518 (1974-11-01), Severini et al.
patent: 3886232 (1975-05-01), Tanaka et al.
patent: 3959895 (1976-06-01), Lonning

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