Production process of polyphenylene ether composition

Details Production process of polyphenylene ether composition Production process of polyphenylene ether composition

2006-04-19

2009-06-09

Sanders, Kriellion A (Department: 1796)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S100000, C524S102000, C524S115000, C524S127000

Reexamination Certificate

active

07544728

ABSTRACT:
The present invention relates to a production process of polyphenylene ether composition comprising (A-1) a polyphenylene ether, (A-2) a polystyrene, (A-3) an ester phosphate, (B) a hindered amine light stabilizer, and (C) an ultraviolet absorber. The feature of the present invention is melt compounding a part of raw materials to obtain a pre-mixture at Step 1, and melt compounding the pre-mixture and the rest of the raw materials at Step 2. A polyphenylene ether composition which has a good light-discoloration resistance and causes little unmelted portion, and to a molded article formed from the polyphenylene ether composition can be obtained according to the production process of the present invention.

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English Language Abstract of JP 60-149646.
English Language Abstract of JP 62-283183.
English Language Abstract of JP 7-258514.
English Language Abstract of JP 11-060934.
English Language Abstract of JP 11-071488.
English Language Abstract of JP 2002-541290.
English Language Abstract of JP 2005-105074.
English Language Abstract of JP 7-268202.
English Language Abstract of JP 8-183903.
English Language Abstract of JP 63-301222.
English Language Abstract of JP 63-108059.
English Language Abstract of JP 2-276823.
English Language Abstract of JP 59-059724.
English Language Abstract of JP2000-154289 published Jun. 6, 2000.
English Language Abstract of JP04-117444 published Apr. 17, 1992.
English Language Abstract of JP10-292053 published Nov.4, 1992.

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