Compositions polymerizable for the production of substrates polymers transparent substrates transparent polymers obtained and their applications in the optical

摘要

The composition comprises: - 35 to 70 parts by weight of one or more monomers (i) of formula: (see appended drawing in bopi) in which r1 and r2 represent h or ch3, a represents a divalent radical of formula (see appended drawing in bopi) m1 and m2 are each an integer ranging from 4 to 20, - 5 to 50 parts by weight of a monomer (ii) comprising at least one urethane pattern and at least two functions (meth) acrylate. - 5 - 40 parts by weight of a monomer (iii) to high abbe number, and comprising one or several function (s) methacrylate, the total weight of the monomers (i), (ii) and (iii) representing 100 parts by poids.application to the manufacture of ophthalmic optics and