This invention relations to a polymerizable composition for forming a photochromic article of glass transition temperature of at least 50 ° C. on curing, the composition comprising: (a) a polymerizable composition comprising a monomer component or resin formed therefrom; and (b) a photochromic dye monomer comprising a photochromic moiety and at least one oligomeric group having at least one group reactive with the monomer component during or following curing wherein the oligomer group comprises a multiplicity of monomer units selected from siloxane, alkylene and substituted alkylene.
本发明涉及一种可聚合组合物,用于形成
玻璃化转变温度至少为50℃的光致变色物品,所述组合物包括:(a)一种聚合物组合物,包括单体组分或由其形成的
树脂;以及(b)一种光致变色
染料单体,包括一个光致变色基团和至少一个具有至少一个与单体组分在固化期间或固化后反应的寡聚物基团,其中寡聚物基团包括从
硅氧烷、烷基和取代烷基中选择的多种单体单元。