Patent ID: 6897282
Filing Date: 2005-05-24
Classification: C08G,C08L

Abstract:
1. A process to prepare a polyphenylene ether resin containing aliphatic unsaturation, wherein said process comprises: reacting a polyphenylene ether resin with an unsaturated compound in a solvent to form a solution containing a polyphenylene ether resin containing aliphatic unsaturation, wherein the unsaturated compound has the formula wherein R 1 is an aliphatic or aromatic residue, n can vary from 0 to about 10, and wherein each of R 2 , R 3 , and R 4 are independently hydrogen, alkyl, or aryl, and wherein X is a residue of one of the formulae wherein R 7 is an aliphatic or aromatic residue, m can vary from 0 to about 10, and wherein each R 8 , R 9 , and R 10 are independently hydrogen, alkyl, or aryl; and precipitating the polyphenylene ether containing aliphatic unsaturation from the solution by combining the solution with an antisolvent, wherein the antisolvent comprises a compound selected from alkanols having one to about ten carbon atoms, ketones having three to about ten carbon atoms, and alkanes having five to about ten carbon atoms, and mixtures thereof.