Liquid polymerizable composition for the production of high refractive index optical articles

A liquid, polymerizable composition for the production of optical articles having a high refractive index consisting of:

• (A) 30 to 65% by weight and in at least essentially monomeric form of either:
• (i) the product of transesterification of diallyl-carbonate with an aromatic diol containing aromatic groups selected from the group consisting of:
• ##STR6## either meta or para, and ##STR7## either meta or para, ##STR8## with R' being a radical selected from the group consisting of --CH.sub.2 --, ##STR9## and --O--;
• with X being selected from the group consisting of H, Cl, and Br, in a mutual molar ratio of 12/1 or
• (ii) a diallyl ester of a halogenated bicarboxy aromatic acid selected from the group consisting of diallyl-tetra-chloro-phthalate and diallyl-tetrabromo-phthalate;
• (B) 15 to 65% by weight and in at least essentially monomeric form of a reactive and non-halogenated monomer selected from the group consisting of diallyl orthophthalate, diallyl isophthalate, diallyl terephthalate, triallyl cyanurate, and triallyl isocyanurated;
• and
• (C) 5 to 40% by weight and in at least a trimer or higher oligomeric form of the product of transesterification of diallyl carbonate with diethylene glycol in a molar ratio of 2/1.