Patent ID: 6500546
Filing Date: 2002-12-31
Classification: C08L,H05K,Y10S,Y10T

Abstract:
Curable flame-resistant substantially halogen free epoxy resin compositions, comprising:(a) one or more bifunctional or polyfunctional epoxy resin; (b) a phosphorous-containing compound selected from the group consisting of: b,1 b,2 at least one compound selected from the group selected from â€ƒand mixtures thereof, wherein R2 represents an alkyl group having from 1 to 4 carbon atoms, and b,3 â€ƒand combinations of b1, b2 and b3, or b1 and b2, or b2 and b3 or b1 and b3; (c) a curing agent comprising oligomers of styrene and maleic acid and/or maleic anhydride and/or salts or esters of maleic acid of the formulae: â€ƒwherein m is an integer in the range of from 1-6, wherein n is an integer in the range of from 2-12, wherein each of R4 independently represents hydrogen, an alkali metal, alkaline earth metal or ammonium, an ester group, or benzyl or alkylsubstituted benzyl, and (d) a curing catalyst.