EPOXIDE AND THIOEPOXIDE FUNCTIONAL, POLYMERIZABLE COMPOSITIONS AND METHODS OF PREPARING OPTICAL ARTICLES THEREFROM
申请人:PPG INDUSTRIES OHIO, INC.
公开号:US20140155572A1
公开(公告)日:2014-06-05
Provided is a thioepoxide functional polymerizable composition comprising a reaction product of thiourea and an epoxide functional, polymerizable composition. The epoxide functional, polymerizable composition comprises a reaction product prepared from a reaction mixture comprising:
(a) a monomer comprising at least one ethylenically unsaturated ester functional monomer having an epoxide functional group; and
(b) a compound having two or more thiol groups.
The reactants (a) and (b) are reacted via a Michael addition reaction in the presence of a base to form an epoxide functional reaction product. Also provided are methods of preparing an optical article using the polymerizable compositions.