Patent ID: 8912259

Claim:
A halogen-free thermosetting composition comprising: (a) 15-30 parts by weight of a benzoxazine compound of the formula (I) wherein each R is, independently from one another, allyl, unsubstituted or substituted phenyl, unsubstituted or substituted C 1 -C 8 alkyl or unsubstituted or substituted C 3 -C 3 cycloalkyl; (b) a monobenzoxazine monomer of the formula (II) wherein X is monophenol, a C 1 -C 8 alkyl group or a C 3 -C 8 cycloalkyl group; and (c) a naphthalene epoxy where parts by weight are based on 100 parts by weight of the halogen-free thermosetting composition and wherein the halogen-free thermosetting composition, upon heating at a temperature greater than 90° C. to less than 150° C., is thermally cured.