Polyphenylene ether blends and a process for the preparation thereof
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United States of America Patent
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Jul 27, 1999
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N/A
app pub date -
Nov 19, 1996
filing date -
May 19, 1994
priority date (Note) -
Expired
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Abstract
The present invention concerns polymer blends and processes for the preparation thereof. The present blends contain a) 5 to 95 parts by weight of poly(2,6-dimethyl-1,4-phenylene)ether, b) 95 to 5 parts by weight of a second polymer which is immiscible therewith, and c) a component (a compatibilizer) which enhances the compatibility of the polymers. According to the invention the component enhancing the compatibility of the polymers comprises 0.1 to 10%, preferably about 1.5 to 10%, calculated on basis of the total weight of components a and b, of at least one compound C, which has the formula A.sub.i --B.sub.j I wherein A stands for a group which contains at least one ring with 3 to 7 members, capable of forming ring-to-ring interactions with the phenyl rings of poly(2,6-dimethyl-1,4-phenylene)ether, B is a polar group, i is an integer 1 to 20, and j is an integer 0 to 20, whereat i+j is greater than or equal to 2, the melting point of compound C is above 50.degree. C. and the boiling point thereof above 200.degree. C. (at 760 mmHg) and c compound C is capable of at least partially dissolving poly(2,6-dimethyl-1,4-phenylene)ether and is preferably a hydroquinone derivative.
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