Patent ID: 6693149
Filing Date: 2004-02-17
Classification: C08G,C08L,Y10S

Abstract:
A process for preparing an epoxy group-containing curable polyphenylene ether (PPE) resin, comprising:reacting a polyphenylene ether resin represented by formula (I), a strong base, and a compound containing a leaving group and epoxy group to obtain a curable polyphenylene ether resin represented by formula (II), wherein formula (I) has a number average molecular weight higher than 3000 and is â€ƒwherein R1 can be the same or different and is H, alkyl having from 1 to 3 carbon atoms, or â€ƒwherein R11 is alkylene having from 1 to 3 carbon atoms, and R12 is aryl; Z1 can be the same or different and is H, OH, or â€ƒand at least one Z1 is OH or â€ƒwherein R13 is aryl; and p is from 25 to 165, wherein the compound containing leaving group and epoxy group has the formula (A): â€ƒwherein X is a leaving group of halogen or sulfonate; and n is an integer of 1 to 6, wherein the formula (II) is: â€ƒwherein R2 can be the same or different and is H, alkyl having from 1 to 3 carbon atoms, â€ƒwherein R11 is alkylene having from 1 to 3 carbon atoms; R12 is aryl; n is an integer of 1 to 6; and s is 0 or an integer of 1 to 6; Z2 can be the same or different and is H, OH, â€ƒand at least one Z2 is a group represented by formula (i), wherein R13 is aryl, n and s are defined above; and p is 25 to 165.