Ultraviolet light absorbers having two different chromophors in

Details Ultraviolet light absorbers having two different chromophors in Ultraviolet light absorbers having two different chromophors in

1983-10-06

1988-05-17

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

524 91, 548260, C07D24920

Patent

active

047451947

ABSTRACT:
Ultraviolet light absorbing compounds having two different chromophors in the same molecule, particularly the benzotriazole chromophor and either the dihydroxybenzophenone or dihydroxyacetophenone chromophor; specifically, the two compounds 3,5-[di(2H-benzotriazole-2-yl)]-2,4-dihydroxyacetophenone and 3,5-[di(2H-benzotriazole-2-yl)]2,4-dihydroxybenzophenone.

REFERENCES:
patent: 3213058 (1965-10-01), Boyle et al.
Balough et al., "Volatility . . . Polymer Mixes", Chem. Abst. 87: 185422b.
Volkotraub et al., "Spectroscopic Characteristics . . . 2-(2'-Hydroxyphenyl) Benzotriazole . . . " Chem. Abst. 84: 151415z.
Balough et al., "Volitability of Ingredients . . . of Polymer Mixtures," Plasty Kawc, 14 (7), 204-7.
Volkotraub et al., "Special Spectral Characteristics . . . of 2-(2'-Hydroxyphenyyl) Benzotriazole-Type Photostabilizers", Vysokomol. Soyed, A18:3, 553-6, (1976).

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