4-Heterocyclylvinyl-4-'styryl-biphenyls

Details 4-Heterocyclylvinyl-4-'styryl-biphenyls 4-Heterocyclylvinyl-4-'styryl-biphenyls

1984-07-27

1987-05-19

Kight, John

Compositions

Organic luminescent material containing compositions

Optical brightening compositions

25230123, 25230124, 544208, 544211, 544217, 544218, 544219, 544180, 544311, 544313, 544314, 544317, 544318, 544319, 544321, 544323, 544325, 544327, 544329, 544334, 544335, 544242, 548131, 548215, 548262, C09K 1106, C07D25112, C07D26108

Patent

active

046666273

ABSTRACT:
Novel 4-heterocyclylvinyl-4'-styryl-biphenyls of the formula ##STR1## are described, i which A is an isoxazolyl, oxadiazolyl, pyrimidinyl or triazinyl radical which is unsubstituted or substituted by a non-chromophoric substituent, R.sub.1 is hydrogen or a non-chromophoric substituent and R.sub.2 is hydrogen, halogen, or alkyl; processes for the preparation of these compounds are also described.
The novel 4-heterocyclylvinyl-4'-styryl-biphenyls can be used as fluorescent brighteners for high-molecular organic materials, in particular materials of polyamide and polyester, especially for polyester textiles.

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patent: 4323675 (1982-04-01), Eckes et al.
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