Patent ID: 6576690
Filing Date: 2003-06-10
Classification: C08G,H05K

Abstract:
A flame retarding phosphorous-containing epoxy resin of the following formula: wherein R represents a C1-6 alkylene group;a represents an integral number of from 1 to 10; b represents an integral number of from 0 to 10; X represents a group of formula â€”(Oâ€”CH2â€”CH(OH)â€”CH2â€”Oâ€”Mâ€”)yâ€”, in which y represents an integral number of from 0 to 20; and M represents a group selected from the following groups (E1)&square;(E2), and (E3): â€ƒwherein R3 represents a C1-6 alkyl group; A represents a chemical bond, â€”Oâ€”, â€”Sâ€”, â€”SO2â€”, â€”COâ€”, C1-6 alkylene group, or a group of the following formula: â€ƒwherein R1 represents a hydrogen atom or a C1-6 alkyl group, d represents an integral number of from 0 to 6, R2s are the same or different and represent a hydrogen atom or a group of the following formula: â€ƒin which R1 is the same as defined above; â€ƒin which R1 is the same as defined above; m and n are the same or different and represent an integral number of from 0 to 3; Ar1 and Ar2 are the same or different and represent a group selected from the following formulae (E3) or (E4): â€ƒwherein R1, m, and n are the same as defined above.