Composition comprising: (i) at least one compound selected from the group consisting of triallyl isocyanurate, triallyl cyanurate; and (ii) at least one compound of the chemical structure with where R 1, R 2 are each independently hydrogen or methyl; A is selected from the group consisting of unbranched or branched alkylene group which has 1 to 20 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 3, -C(=O)NR 4 R 5, arylene group which has 6 to 14 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical or an unbranched or branched alkyl radical having 1 to 10 carbon atoms and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 6, -C(=O)NR 7 R 8, a bridging radical of the chemical structure -A 1 -X-A 2 -; where R 3, R 4, R 5, R 6, R 7, R 8 are each independently selected from the group consisting of hydrogen, branched or unbranched alkyl radical having 1 to 10 carbon atoms; where A 1, A 2 are each independently a branched or unbranched alkylene group having 1 to 10 carbon atoms; and where X is selected from the group consisting of -O-, -S-S-, -S-, -NR 9 - with R 9 = unbranched or branched alkyl radical having 1 to 10 carbon atoms. (i) at least one compound selected from the group consisting of triallyl isocyanurate, triallyl cyanurate; and (ii) at least one compound of the chemical structure with where R 1, R 2 are each independently hydrogen or methyl; A is selected from the group consisting of unbranched or branched alkylene group which has 1 to 20 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 3, -C(=O)NR 4 R 5, arylene group which has 6 to 14 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical or an unbranched or branched alkyl radical having 1 to 10 carbon atoms and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 6, -C(=O)NR 7 R 8, a bridging radical of the chemical structure -A 1 -X-A 2 -; where R 3, R 4, R 5, R 6, R 7, R 8 are each independently selected from the group consisting of hydrogen, branched or unbranched alkyl radical having 1 to 10 carbon atoms; where A 1, A 2 are each independently a branched or unbranched alkylene group having 1 to 10 carbon atoms; and where X is selected from the group consisting of -O-, -S-S-, -S-, -NR 9 - with R 9 = unbranched or branched alkyl radical having 1 to 10 carbon atoms. R 1, R 2 are each independently hydrogen or methyl; A is selected from the group consisting of unbranched or branched alkylene group which has 1 to 20 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 3, -C(=O)NR 4 R 5, arylene group which has 6 to 14 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical or an unbranched or branched alkyl radical having 1 to 10 carbon atoms and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 6, -C(=O)NR 7 R 8, a bridging radical of the chemical structure -A 1 -X-A 2 -; where R 3, R 4, R 5, R 6, R 7, R 8 are each independently selected from the group consisting of hydrogen, branched or unbranched alkyl radical having 1 to 10 carbon atoms; where A 1, A 2 are each independently a branched or unbranched alkylene group having 1 to 10 carbon atoms; and where X is selected from the group consisting of -O-, -S-S-, -S-, -NR 9 - with R 9 = unbranched or branched alkyl radical having 1 to 10 carbon atoms. unbranched or branched alkylene group which has 1 to 20 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 3, -C(=O)NR 4 R 5, arylene group which has 6 to 14 carbon atoms and in which at least one hydrogen radical may be replaced by a halogen radical or an unbranched or branched alkyl radical having 1 to 10 carbon atoms and in which one or two hydrogen radicals may each be replaced by a radical selected from the group consisting of -OR 6, -C(=O)NR 7 R 8, a bridging radical of the chemical structure -A 1 -X-A 2 -; where R 3, R 4, R 5, R 6, R 7, R 8 are each independently selected from the group consisting of hydrogen, branched or unbranched alkyl radical having 1 to 10 carbon atoms; where A 1, A 2 are each independently a branched or unbranched alkylene group having 1 to 10 carbon atoms; and where X is selected from the group consisting of -O-, -S-S-, -S-, -NR 9 - with R 9 = unbranched or branched alkyl radical having 1 to 10 carbon atoms. where R 3, R 4, R 5, R 6, R 7, R 8 are each independently selected from the group consisting of hydrogen, branched or unbranched alkyl radical having 1 to 10 carbon atoms; where A 1, A 2 are each independently a branched or unbranched alkylene group having 1 to 10 carbon atoms; and where X is selected from the group consisting of -O-, -S-S-, -S-, -NR 9 - with R 9 = unbranched or branched alkyl radical having 1 to 10 carbon atoms.