Use of.alpha.,.alpha.'-bis(dialkylaminobenzylidene) ketone...

Details Use of.alpha.,.alpha.'-bis(dialkylaminobenzylidene) ketone... Use of.alpha.,.alpha.'-bis(dialkylaminobenzylidene) ketone...

B - Operations, Transporting

41

M

42/2, 352/32.4

B41M 5/00 (2006.01) G11B 7/244 (2006.01) G11B 7/247 (2006.01)

Patent

CA 1154963

-i- THE USE OF .alpha.,.alpha.'-BIS(DIALKYLAMINOBENZYLIDENE) KETONE DYES IN OPTICAL RECORDING ELEMENTS Abstract of the Disclosure Dyes conforming to the structure: Image wherein n is an integer from 0-5 and each R is independently selected from the group consisting of straight- and branched-chain alkyl groups of about 1-6 carbon atoms, have a high extinction coefficient at 488 nm and are compatible with common binders such as cellulose-nitrate. Thus, these dyes are useful in deformable recording compositions for optical recording elements, e.g., video discs.

369312

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