CPC C08G 59/26 (2013.01) [C08G 59/44 (2013.01); C08G 59/686 (2013.01); C08J 5/243 (2021.05); C08K 5/103 (2013.01); C08K 5/5377 (2013.01); C09K 21/12 (2013.01); C08J 2363/00 (2013.01); C08K 2201/005 (2013.01); C08K 2201/014 (2013.01)] | 11 Claims |
1. A curable flame retardant epoxy resin composition comprising:
(a) a combination of epoxy resins comprising at least one diglycidyl ether of a bisphenol, at least one epoxy novolac resin, and at least one oxazolidone-containing epoxy resin;
(b) at least one non-halogenated, phosphorus-containing flame retardant agent having an average particle size of less than 5 microns for providing a fiber reinforced epoxy resin composite that retains its mechanical properties while the fiber reinforced epoxy resin composite exhibits a flame retardancy of at least a UL 94 V-1 rating;
(c) at least one mold release agent;
(d) at least one micronized latent curing agent having a particle size distribution in which 98% of the particles have a maximum particle diameter that is less than 10 μm and where at least 35% of particles have a particle diameter that is less than 2 μm; and
(e) at least one catalyst;
wherein the at least one non-halogenated, phosphorus-containing flame retardant (b) is present in an amount of from 10 wt % to 20 wt %, based on the total weight of the composition.
|