Polymerizable compositions

Claim 1

A polymerizable composition comprising a mixture of (A) a substance having at least one allyl- or methallyl-substituted bicyclo[2.2.1]-hept-5-ene-2,3-dicarboxylic acid imide residue and having formula III ##STR9## where n denotes 1, 2 or 3, R 2 denotes allyl or methallyl, R 3 denotes a hydrogen atom or methyl group, and when n is 1, R 4 denotes a hydrogen atom, a hydroxyl group, or an organic group selected from C 1 -C 40 -alkyl, C 1 -C 40 -alkyl interrupted in the chain by oxygen atoms, C 3 -C 6 -alkenyl, C 5 -C 20 -cycloalkyl, C 6 -C 20 -aryl or benzyl, any of said organic groups being substituted or unsubstituted by a hydroxyl group, or a group of formula IV --Ar.sup.1 --X--Ar.sup.2 --OH IV where Ar 1 and Ar 2 each denote a phenylene group and X denotes methylene, isopropylidene, --CO--, --O--, --S-- --SO 2 --, or when n is 2, R 4 denotes C 2 -C 20 -alkylene, C 2 -C 20 -alkylene interrupted in the chain by oxygen atoms or secondary amino groups, C 6 -C 20 -arylene or a group of formula V --Ar.sup.1 --X--Ar.sup.2 -- V where Ar 1 , Ar 2 and X are as defined in formula IV, or when n is 3, R 4 denotes a group of formula VI ##STR10## Y denotes >P═O or >P-- and R denotes an alkylene group of 2 to 40 carbon atoms, C 2 -C 40 -alkylene in the chain by oxygen atoms, a m-or p-phenylene group, or a m- or p-phenyleneoxy group in which the oxygen atom is bonded to the group Y, or Y denote >CH-- and R denotes a m- or p-phenylene group, or Y denotes CH 3 CH 2 C(CH 2 ) 3 or --CH 2 CHCH 2 -- and R denotes an oxyalkylene group of 2 or 3 carbon atoms, a polyoxyethylene or polyoxypropylene group of 4 to 40 carbon atoms, or a m- or p-phenyleneoxy group in which the oxygen atom it attached to the group Y, or Y denotes N- and R denotes an alkylene group of 2 to 10 carbon atoms, or a m- or p-phenylene group, and (B) an acrylic material having at least one polymerizable residue of formula I CH.sub.2 ═C(R.sup.1)COO-- I where R 1 denotes a hydrogen atom or a methyl group.