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专利信息

专利号:US-7671141-B2
优先权日:2005-06-30
标题:Second order nonlinear optical polyimides having benzobisthiazole-based pendant groups, and preparation of the same
发明人：HSU TZU-CHIEN; CHEN CHIEN-FAN; WU SHOU-SHIUN
权利人:UNIV NAT SUN YAT SEN
摘要:Disclosed herein are second order nonlinear optic polyimide polymers comprising repeating units represented by the formula: n nwherein each of the substituents is given the definition as set forth in the Specification and Claims. Also disclosed are the preparation processes of these polymers, chromophore-forming compounds for synthesis of these polymers, and the intermediate polymers thereof. The second order nonlinear optic polyimide polymers of formula (I) may be used in the manufacture of electro-optic (EO) devices, such as electro-optic waveguide devices.

专利号:US-5191088-A
优先权日:1991-03-11
标题 :Aromatic monoanhydride-esters
发明人：BLYAKHMAN YEFIM
权利人:CIBA GEIGY CORP
摘要:Aromatic monoanhydride-esters of the formula (I) ##STR1## wherein R 1 is ##STR2## and R 2 is hydrogen, C 1 -C 4 alkyl or --OCH 3 are useful as endcapping agents for the synthesis of multifunctional high temperature resins such as polyimides, polyimide-esters, polyimide-ethers and polyimide-amides.

专利号:EP-0504109-A1
优先权日:1991-03-11
标题:Aromatic monoanhydride-esters
发明人：BLYAKHMAN YEFIM
权利人:CIBA GEIGY AG
摘要:Aromatic monoanhydride-esters of the formula (I)n n wherein R¹ isn n and R² is hydrogen, Câ‚?-Câ‚„alkyl or -OCH₃ are useful as endcapping agents for the synthesis of multifunctional high temperature resins such as polyimides, polyimide-esters, polyimide-ethers and polyimide-amides.

专利号:US-2897209-A
优先权日:1957-04-29
标题:Synthesis of glutamic acid
发明人：RUDOLPH KODRAS
权利人:INT MINERALS & CHEM CORP

专利号:FR-2838738-A1
优先权日:2002-04-17
标题:SYNTHESIS OF UNSATURATED, STABLE (POLY) URETHANES, FREE OF THE REAGENTS USED

专利号:CN-101910129-A
优先权日:2007-10-26
标 题 :Synthesis of quaternary salt compounds