Compositions – Radioactive compositions – Nuclear reactor fuel
Patent
1987-06-22
1990-02-27
Morris, Theodore
Compositions
Radioactive compositions
Nuclear reactor fuel
25229901, 528 32, 528 43, G02F 113, C08G 7720
Patent
active
049040669
ABSTRACT:
Liquid crystal polymers of general formula ##STR1## wherein the ratio b : a is less than 3 and greater than O, X is a mesogenic group of formula ##STR2## where A and B are cyclic groups, preferably phenyl, which may carry lateral substituents, preferably methyl, R may be F, CH.sub.3, CN, R.sup.1 , OR.sup.1 or COOR.sup.1 where R.sup.1 is alkyl, Y is COO.sub.1 OOC, CH.sub.2 CH.sub.2, c is 0 or 1. A preferred group X is ##STR3## The polymers may be used for optical information storage either alone or in mixture with other liquid crystals for example with smectic materials of formula ##STR4## where R" is alkyl or alkoxy and r is 0 or 1.
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patent: 4702558 (1987-10-01), Coles et al.
"Synthesis, Structure and Properties of Liquid Crystalline Side Chain Polymers" Finkelmann Polymer Liquid Crystals, Editor C. Ferri et al., 1982, pp. 35-62.
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Makromol Chem. Rapid Commun., vol. 3, 1982, Ringsdorf et al., "Liquid Crystalline Side Chain Polymers with Low Glass Transition Temperatures", pp. 557-562.
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Gray George W.
Lacey David
McArdle Ciaran B.
Nestor Gary
Morris Theodore
The General Electric Company p.l.c.
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