Optically brightening with a synergistic mixture

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

1976-08-26

1978-08-08

Lilling, Herbert J.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8111, 8137, 252 89R, 252 95, 25230124, D06L 312, C11D 726, C09K 1300

Patent

active

041053990

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: 2956898 (1960-10-01), Fleck
patent: 3449257 (1969-06-01), Tuite et al.
patent: 3649623 (1972-03-01), Ackerman et al.
patent: 3779931 (1973-12-01), Fries
"Properties & Evaluation of Fluorescent Brightening Agents", J. Lanter, J. of Soc. of Dyers & Colorists, vol. 82, Apr. 1966, #4, pp. 125-132.

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