Compositions – Light transmission modifying compositions
Patent
1994-04-07
1996-03-05
Tucker, Philip
Compositions
Light transmission modifying compositions
359329, F21V 900, G02F 135
Patent
active
054965039
ABSTRACT:
A third-order nonlinear optical main chain polymer material contains a high .chi..sup.(3) component having no less than 3 but no more than 7 .pi.-conjugated bonding groups and having an electron donor in the main chain of the polymer through covalent bonds. The donor is preferably an alkylamino structure, more preferably a dialkylamino structure. Particularly preferred is a diethylamino structure. The high .chi..sup.(3) component is preferably a phenylene ring system of which phenylene rings are bonded through azo bonding groups with the phenylene rings and the azo bonding groups being positioned alternately. The polymer main chain is polyurethane or polyester. The third-order nonlinear optical main chain polymer material is prepared by polyaddition of a high .chi..sup.(3) compound, i.e., a precursor of the high .chi..sup.(3) component, having a hydroxyl group at each end with a diisocyanate compound or by polycondensation of the high .chi..sup.(3) compound with a dicarboxylic acid.
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Amano Michiyuki
Kaino Toshikuni
Kurihara Takashi
Mori Yuhei
Tomaru Satoru
Nippon Telegraph and Telephone
Tucker Philip
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