Optically brightening with a synergistic mixture

Details Optically brightening with a synergistic mixture Optically brightening with a synergistic mixture

1974-08-16

1977-02-15

Weinblatt, Mayer

Compositions

Dust suppressants for bulk materials, or processes of...

252543, 25230124, 252 95, 8 1W, C11D 3395, C11D 342

Patent

active

040081664

ABSTRACT:
The present invention relates to the optically brightening of organic fibrous materials with compositions containing a mixture of 1.2-bis-[5-methyl-benzimidazol-(2)-yl]-ethylene and 2.5-bis-[benzoxazol-(2)-yl]-thiophene. The mixture of said brighteners show surprising synergistic effects.

REFERENCES:
patent: 2995564 (1961-08-01), Duennenberger et al.
patent: 3135762 (1964-06-01), Maeder et al.
patent: 3255199 (1966-06-01), Maeder et al.
patent: 3449257 (1969-06-01), Turte et al.
patent: 3485761 (1969-12-01), Haxby
patent: 3649623 (1972-03-01), Ackermann et al.

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