Weather-resistant polyacetal resin compositions exhibiting reduc

Details Weather-resistant polyacetal resin compositions exhibiting reduc Weather-resistant polyacetal resin compositions exhibiting reduc

1992-06-19

1993-11-02

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 91, 524208, 524291, 524336, 524337, 525 64, 525902, C08K 5345, C08K 520, C08K 516, C08K 513, C08K 510

Patent

active

052584313

ABSTRACT:
Moldable weather-resistant polyacetal resin compositions exhibiting low surface gloss characteristics are a melt-blend of (A) 100 parts by weight of a polyacetal base resin, (B) between 0.01 to 5 parts by weight of a weather stabilizer, and (C) a surface gloss reducing effective amount of between 1 to 50 parts by weight of a core-shell polymer having a rubbery polymer as the core and a glassy vinyl copolymer having at least one oxygenic polar group as the shell. Molded articles formed of such polyacetal compositions exhibit weather-resistance properties and a reduced surface gloss of at least 35%. Moreover, the ability to imprint a grain-like appearance on the surfaces of the molded articles is enhanced.

REFERENCES:
patent: 4473679 (1984-09-01), Falk et al.
patent: 4894416 (1990-01-01), Gallucci
patent: 4975478 (1990-12-01), Okuda
patent: 5006592 (1991-04-01), Oshima et al.

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