Curable polyphenylene ether resin composition and a cured resin composition obtainable therefrom

Claim 1

A curable polyphenylene ether resin composition comprising: (a) 98 to 40% by weight, based on the total weight of components (a) and (b), of a curable polyphenylene ether resin comprising at least one polyphenylene ether represented by the formula: ##STR17## wherein m is an integer of 1 or 2, J is a polyphenylene ether chain comprising units of the formula: ##STR18## wherein R 1 , R 2 , R 3 and R 4 each independently represent a hydrogen atom, an allyl group or a propargyl group, at least one of R 1 , R 2 , R 3 , and R 4 being other than hydrogen, and Q' represents a hydrogen atom when m is 1, and Q' in each polyphenylene ether independently represents Q or Q substituted with at least one substituent selected from the group consisting of an allyl group and a propargyl group when m is 2, where Q is the residue of a bifunctional phenol having 2 phenolic hydroxyl groups and having unpolymerizable substituents at the ortho and para positions with respect to the phenolic hydroxyl groups, with the proviso that each polyphenylene ether chain is the same or different when m is 2 and that said units of formula (II) are the same or different, said curable polyphenylene ether resin having an average substitution degree of allyl and propargyl groups of from 0.1 to 100 % by mole as defined by the formula: ##EQU11## (b) 2 to 60% by weight, based on the total weight of components (a) and (b), of at least one cyanurate selected from the group consisting of triallyl isocyanurate and triallyl cyanurate; (c) 0 to 50% by weight, based on the total weight of components (a) and (b), of a fire retardant selected from the group consisting of a phosphorus-containing fire retardant, a chlorine-containing fire retardant and a bromine-containing fire retardant; (d) 0 to 50% by weight, based on the total weight of components (a) and (b), of an antimony-containing auxiliary fire retardant; and (e) 0 to 90% by weight, based on the total weight of components (a), (b), (c), (d) and (e), of a reinforcement.