NOVEL (THIO)(METH)ACRYLATE MONOMERS, INTERMEDIATE COMPOUNDS FOR THE SYNTHESIS OF THESE MONOMERS, POLYMERISABLE COMPOSITIONS AND RESULTING POLYMERS AND OPTICAL AND OPHTHALMOLOGIC APPLICATIONS THEREOF

摘要

The invention concerns novel monomers of formula A: (A) in which: Z represents H or CH3 and X represents O or S, and Y is a heterocyclic compound consisting of hydrogen, carbon and sulphur atoms, having 5 to 8 chains and at least two intracyclic sulphur atoms. The invention is useful for making waveguides, optical fibres and spectacle lenses.