摘要:
Nonpolymeric fluorochemicals defined as by the following Structure I are useful in thermally developable materials. The fluorochemicals are defined as follows: R f -R-N(R 1 )(R 2 )(R 3 ) + X - (I) wherein R f is a straight or branched chain perfluoroalkyl group having 4 to 18 carbon atoms, R is a divalent linking group comprising at least 4 carbon atoms and a sulfide group in the chain, R 1 , R 2 , R 3 are independently hydrogen or alkyl groups or any two of R 1 , R 2 , and R 3 taken together can represent the carbon and nitrogen atoms necessary to provide a 5- to 7-membered heterocyclic ring with the cationic nitrogen atom, and X - is a monovalent anion.