Patent ID: 8536283
Filing Date: 2013-09-17
Classification: C09D

Abstract:
1. A resin varnish composition with high glass transition temperature and able to apply to a glass fiber laminate, comprising: (1) 60-95 wt % of benzoxazine resin having highly symmetric molecular structure, based on the total resin weight of the resin varnish composition; and (2) 5-40 wt % of curing agent, based on total resin weight of the resin varnish composition, wherein (1) benzoxazine resin comprises a benzoxazine resin (F1) having tri-functional resin monomer or a benzoxazine resin (F2) having tetra-functional resin monomer; the benzoxazine resin (F1) has the following structure and the benzoxazine resin (F2) has the following structure wherein R1 and R2 are H or CH3; R3 is X is