| http://www.w3.org/ns/prov#value | - iazinane-2,4,6-trione-1,3-diyl or 3-(6-isocyanatohexyl)-biuret-1,5-diyl radical(s), or R6 is an n-valent radical of linear or branched ???CO???(C0-C12alkylene)-(CO)n-1??? and the alkylene may be interrupted by oxygen, phenylene, cyclohexanediyl or by norbornanediyl; R7 is hydrogen, ???Si(C1-C6alkyl)3, C1-C12alkyl, R21, C2-C18acyl, ???CO???NH???C1-C12alkyl, C2-C20hydroxyalkyl, C2-C20methoxyalkyl, 3
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