The present invention relates to photosensitive compound, more particularly, derivatives of halomethyl-1,3,5-triazines.
Halomethyl-1,3,5-triazines are known to be initiators for a number of photochemical reactions. They are employed to produce free radicals for initiating polymerization or color changes and for initiating secondary reactions upon liberation of acid by the interaction of the free-radicals when hydrogen donors are present.
It would be desirable to provide a photopolymerizable monomeric compound that does not require a separate photoinitator to initiate polymerization of the compound.
This invention provides radiation-sensitive organo-halogen compounds having a photo-labile halomethyl-1,3,5-triazine moiety and at least one polymerizable moiety within one molecule. The compounds of this invention have at least one halomethyl substituent attached to a carbon atom of the triazine moiety and at least one polymerizable monomeric moiety attached to another atom of the triazine moiety.
The compounds of this invention can be used to prepare polymers having 1,3,5-triazine substituents attached thereto. The compounds of this invention are good photoinitiators, and compositions containing them can be used in printing, duplicating, copying, and other imaging systems. The compounds of this invention are capable of stimulation by actinic radiation at a wavelength of about 250 to 900 nanometers to generate free radicals.
本发明涉及光敏化合物,特别是卤甲基-
1,3,5-三嗪的衍
生物。
众所周知,卤甲基-
1,3,5-三嗪是许多光
化学反应的
引发剂。它们被用来产生自由基,以引发聚合或颜色变化,并在有氢供体存在时,通过自由基的相互作用释放出酸,从而引发二级反应。
最好能提供一种不需要单独的光
引发剂来引发化合物聚合的可光聚合单体化合物。
本发明提供了对辐射敏感的有机卤素化合物,在一个分子中具有光致弱的卤甲基-
1,3,5-三嗪分子和至少一个可聚合分子。本发明的化合物至少有一个卤甲基取代基连接在三嗪分子的一个碳原子上,至少有一个可聚合单体连接在三嗪分子的另一个原子上。
本发明的化合物可用于制备具有
1,3,5-三嗪取代基的聚合物。本发明的化合物是良好的光
引发剂,含有这些化合物的组合物可用于印刷、复制、复印和其他成像系统。本发明的化合物能够在波长约为 250 至 900 纳米的光辐射刺激下产生自由基。