Resin cross-linking

Abstract

A method of effecting cross-linking of a resin comprises generating vinyl sulfonyl moieties in situ with the resin, said sulfonyl moieties then undergoing a reaction which effects cross-linking of the resin. The vinyl sulfonyl moieties may be generated as a result of a loss of a liquid carrier for the resin to be cross-linked. The cross-linking reaction may result from reaction of the vinyl sulfonyl moieties with nucleophilic groups in the resin composition. The resin may be a co-polymer of a compound of formula (IV) with other olefinically unsaturated monomers.

1 - 36 . (canceled) 
   
   
       37 . The compound of formula (IV) 
     
       
         
         
             
             
         
       
     
   
   
       38 . The compound of formula (V) 
     
       
         
         
             
             
         
       
     
     in which R 1 -R 3  are as defined in claim  3 , R 4  is as defined in claim  7 , R 5 , R 6  and R 7  are independently hydrogen or methyl, and n is a positive integer.