发明授权
US5551973A Photochromic microemulsion ink compositions 失效
光致变色微乳液油墨组合物

Photochromic microemulsion ink compositions
摘要:
Disclosed is an ink composition which comprises an aqueous phase, an oil phase, a photochromic material, and a surfactant, said ink exhibiting a liquid crystalline gel phase at a first temperature and a liquid microemulsion phase at a second temperature higher than the first temperature.
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