Patent ID: 7645846

Claim:
A process for the preparation of a polymerizable composition comprising polymerizable monomer of formula I: said process comprising the steps of: (i) contacting a compound of formula II with an immobilized acid to thereby form a composition comprising the monomer of formula (I) and an acid by-product thereof, wherein X, Y, Z, P, and Q are independently selected from a hydrocarbyl group or hydrogen, A is (CH 2 ) n , wherein n is 0 or 1; R 1 corresponds to either formula IIIA or formula IIIB where R 2 is selected from the group consisting of H, methyl, ethyl, propyl, and butyl, and and R 3 is an unsaturated C 2-5 alkyl; and (ii) neutralizing the composition of step (i) with an immobilized hydroxide, to thereby provide a composition comprising the monomer of formula I and a cross-linker.