发明授权
US5230986A Photosensitive compositions containing benzospiropyrans and uses thereof 失效
含有苯并二吡咯烷的光敏组合物及其应用

Photosensitive compositions containing benzospiropyrans and uses thereof
摘要:
A Photohardenable composition consisting essentially of a free radical polymerizable compound, an electron donating coinitiator, and a benzospiropyran, wherein the benzospiropyran undergoes ring opening to form a merocyanine upon exposure to a actinic radiation or heat and exposure to a second 296 radiation causes the composition to harden.
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