Compositions of polyphenylene ether resin and high impact polyst

Details Compositions of polyphenylene ether resin and high impact polyst Compositions of polyphenylene ether resin and high impact polyst

1986-05-27

1989-05-30

Ziegler, Jacob

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524336, 524337, 524611, 525 68, 525 92, 525905, C08K 534

Patent

active

048352012

ABSTRACT:
The ultraviolet light stability of polyphenylene ether resins and blends is improved by the addition of small amounts of certain 2-hydroxy-4-hydroxylated alkyl ether benzophenones and hindered amines in combination. The benzophenones are specifically characterized by an alkoxy substituent which contains one or more pendent hydroxy groups. Comparison with the closest prior art shows better UV performance. Plasticized, flame retardant and filled versions are also disclosed.

REFERENCES:
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patent: 4024093 (1977-05-01), Abolins
patent: 4288631 (1981-09-01), Ching
patent: 4315848 (1982-02-01), Dester et al.
patent: 4373055 (1983-02-01), Hoaf et al.
patent: 4385146 (1983-05-01), Axelrod
patent: 4444934 (1984-04-01), Kasahara et al.
A. R. Patel et al. "Ultraviolet Stabilization of Polymers: Development with Hindered-Amine Light Stabilizers".
Stabilization & Degradation of Polymers, David L. Allara et al., Advances in Chemical Series No. 169, American Chemical Society, D.C. 116-132 (1978).

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