Optical brighteners

Details Optical brighteners Optical brighteners

1976-01-13

1978-01-31

Mack, John H.

Compositions

Organic luminescent material containing compositions

Optical brightening compositions

25230127, 8 1W, 427158, 2602399, 548373, D06L 312

Patent

active

040714667

ABSTRACT:
Pyrazoline compounds of the formula ##STR1## wherein R represents C.sub.3 -C.sub.20 -alkyl and X, Y and Z independently of one another represent hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, trifluoromethyl, C.sub.1 -C.sub.4 -alkoxy, aryl or acylamino, are useful as optical brighteners for macromolecular materials.

REFERENCES:
patent: 3378389 (1968-04-01), Schellhammer et al.
patent: 3957815 (1976-05-01), Mengler

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