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    • 4. 发明授权
    • Photocrosslinkable polyimides
    • 可光交联聚酰亚胺
    • US06340506B1
    • 2002-01-22
    • US09534136
    • 2000-03-23
    • Richard BucheckerGuy MarckOlivier Muller
    • Richard BucheckerGuy MarckOlivier Muller
    • C09K1900
    • C08G73/1025C08G73/101G02F1/133723G02F1/133753G02F1/133788Y10T428/1023Y10T428/1027
    • The invention relates to novel crosslinkable, photoactive polymers from the class of polyimides, polyamide acids and esters thereof, and to their use as orientation layers for liquid crystals and in the construction of unstructured and structured optical elements and multi-layer systems. The polymers contain as side-chains photo-crosslinkable groups of the following formula: The broken line indicates the point of linkage to the polymer main chain. In addition, A, B each independently of the other represents unsubstituted or optionally fluoro-, chloro-, cyano-, alkyl-, alkoxy-, fluoroalkyl- or fluoroalkoxy-substituted phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl, cyclohexane-1,4-diyl, piperidine-1,4-diyl, piperazine-1,4-diyl; C represents unsubstituted or optionally fluoro-, chloro-, cyano-, alkyl-, alkoxy-, fluoroalkyl- or fluoroalkoxy-substituted phenylene, or pyrimidine-2,5-diyl, pyridine-2,5-diyl, 2,5-thiophenylene, 2,5-furanylene, 1,4- or 2,6-naphthylene.
    • 本发明涉及来自聚酰亚胺,聚酰胺酸及其酯类的新颖的可交联的光活性聚合物,以及它们作为液晶的取向层以及在非结构化和结构化的光学元件和多层系统的构造中的用途。 聚合物含有作为下式的侧链可光交联基团:虚线表示与聚合物主链的连接点。 另外,A,B各自独立地表示未取代或任选的氟,氯,氰基,烷基 - ,烷氧基 - ,氟代烷基 - 或氟代烷氧基取代的亚苯基,吡啶-2,5-二基,嘧啶-2, 5-二基,环己烷-1,4-二基,哌啶-1,4-二基,哌嗪-1,4-二基; C表示未取代或任选的氟代,氯 - ,氰基 - ,烷基 - ,烷氧基 - ,氟烷基 - 或氟代烷氧基取代的亚苯基,或嘧啶-2,5-二基,吡啶-2,5-二基,2,5-亚噻吩,2,5-亚甲苯基,1,4-或2,6-亚萘基。