ALKENYL ETHERS AND RADIATION CURABLE COMPOSITIONS

摘要

ALKENYL ETHERS AND RADIATION CURABLE COMPOSITIONS The invention relates to alk-1-enyl ether silicates having the formula (I) and a process for making same, ¢X!4-nSi¢OR1OCH=CH-R2!n wherein X is halogen or -OR wherein R is lower alkyl or a mixture of halogen and OR, a mixture of OR and hydrogen or a mixture of halogen and hydrogen; R1 contains from 1 to 8 carbon atoms and is alkylene, alkenylene, alkynylene, optionally alkoxylated with up to 20 units of wherein Y is hydrogen or methyl and R2 is each hydrogen or lower alkyl and n has a value of from 1 to 4; and polyfunctional alkenyl ether having the formula (II) A¢(CH2O)m(Z)rCH=CHR!n wherein A is a carbon atom, -OCH=CHR or ¢C1 to C10 alkyl!4-n; R is C1 to C6 alkyl; Z is C2 to C8 alkyleneoxy; r has a value of from 0 to 6; m has a value of from 0 to 1 and at least one of r and m has a positive value; n has a value of from 1 to 4, with the proviso that m is 0 and n is one when A is -OCH=CHR, n has a value of 2 or 3 when A is ¢C1 to C10 alkyl!4-n and n has a value of 4 when A is carbon. This invention also relates to a radiation curable cross linkable compositions containing (a) from about 0.1 to about 5 wt. % of an initiator containing at least 25% cationic initiator, (b) from about o to about 60 wt. % of a polymerizable vinyl ether, epoxide, vinyloxy alkyl urethane or acrylate and (c) from about 35 to about 99.9% wt. % of an ether of formula II.