Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1984-07-19
1986-06-10
Helfin, Bernard
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
570129, 560141, 568643, 568329, 25229966, 558270, C07C 4320, C07C 2518, C07C 69017
Patent
active
045944652
ABSTRACT:
Novel terphenyls having a relatively high clearing point and which are suitable for use in liquid crystal materials or in the preparation of compounds for use in such material are characterised by a formula: ##STR1## wherein: R.sub.1 is selected from H, alkyl, alkoxy, alkylcarbonyl, alkylcarbonyloxy and alkoxycarbonyloxy;
REFERENCES:
patent: 3600445 (1971-08-01), Wirth et al.
patent: 4229315 (1980-10-01), Krause et al.
patent: 4330426 (1982-05-01), Eidenschink et al.
patent: 4415470 (1983-11-01), Eidenschink et al.
patent: 4477369 (1984-10-01), Sugimori et al.
patent: 4490305 (1984-12-01), Eidenschink et al.
Chan Lawrence Kam Ming
Eidensschink Rudolf
Gray George W.
Lacey David
Romer Michael
Helfin Bernard
Merck Patent Gesellschaft mit beschrankter Haftung
The Secretary of State for Defence in Her Britannic Majesty's Go
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