Stabilized polyvinyl chloride resin composition

Details Stabilized polyvinyl chloride resin composition Stabilized polyvinyl chloride resin composition

1987-08-13

1988-06-14

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524357, 524399, 524433, 524436, 524567, C08K 558, C08K 507, C08K 509

Patent

active

047512610

ABSTRACT:
Magnesium oxide is incorporated into a polyvinyl chloride resin composition comprising a polyvinyl chloride, a hydrotalcite, a .beta.-diketone compound and an organic acid salt of zinc or a polyvinyl chloride resin composition comprising a polyvinyl chloride, a hydrotalcite and an organic tin compound. Bubbling as well as discoloration can be prevented in a molded article prepared from the polyvinyl chloride resin composition. Magnesium oxide having a specific surface area of at least 50 m.sup.2 /g and an average secondary particle size smaller than 5 .mu.m is preferably used.

REFERENCES:
patent: 4221687 (1980-09-01), Minagawa et al.
patent: 4427816 (1984-01-01), Aoki et al.
CA 93 17532 (1983).

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