发明名称 |
New high-mol. wt. compounds showing circular dichroism, based on 3,6-carbazole units with an optically-active hydrocarbon group on the ring nitrogen, used in optical recording devices, e.g. DVD-RAM systems |
摘要 |
New high-mol. wt. compounds which show circular dichroism, comprising a helical main chain containing at least 5 to 10000 monomer units consisting of 3,6-linked carbazole residues with an optically-active 4-20C hydrocarbon group on the nitrogen atom. High-mol. wt. compounds with a helical main chain containing at least 5 to 10000 monomer units of formula (I) are new; these compounds show circular dichroism. (Structure (I), page 12) R = an optically-active 4-20C hydrocarbon group . Independent claims are also included for (1) high-mol. wt. compounds comprising 5-10000 units of formula (I) as above (2) formed products consisting of these compounds (3) a method (M1) for the production of these compounds by polymerising the corresponding 3,6-dihalogenated carbazole compounds in presence of a dehalogenation catalyst
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申请公布号 |
DE10348791(A1) |
申请公布日期 |
2004.05.19 |
申请号 |
DE20031048791 |
申请日期 |
2003.10.21 |
申请人 |
NARA INSTITUTE OF SCIENCE AND TECHNOLOGY, IKOMA |
发明人 |
FUJIKI, MICHIYA;MCKENNA, CHARLES E.;ZHANG, ZHONG-BIAO |
分类号 |
C08G61/12;C08G73/06;(IPC1-7):C08G61/12;G06K19/02 |
主分类号 |
C08G61/12 |
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