Patent ID: 8134021

Claim:
A phosphorus-containing bisphenol defined by a formula (1): wherein: R 1 , R 2 , R 3 , and R 4 independently are hydrogen atom, halogen atom, an alkyl group having 1-10 carbon atoms, an oxyalkyl group having 1-10 carbon atoms, a haloalkyl group having 1-10 carbon atoms, a cyclic alkyl group having 3-10 carbon atoms, —CF 3 , or —OCF 3 ; R 5 is an alkyl group having 1-10 carbon atoms or an unsubstituted phenyl group; A and B are independently selected form the group consisting of —OH, —OCN, and —Ar 1 and —Ar 2 of formula (1) are independently selected from the group consisting of following groups: wherein: R 6 is hydrogen atom, a halogen atom, an alkyl group having 1-10 carbon atoms, an oxyalkyl group having 1-10 carbon atoms), a haloalkyl group having 1-10 carbon atoms, a cyclic alkyl group having 3-10 carbon atoms, —CF 3 , or —OCF 3 , m is an integer from 0 to 4; R 7 is —OH, —NH 2 , —NO 2 , —SH, —COOH, —SO 3 H, —COH, —NHCOCH 3 and —OCH 3 ; and R 9 is nil or —(CH 2 ) p , and p is an integer from 1 to 20.