3-[3',4'-Dichloro-6'-alkyl-phenyl]-.DELTA. 2-pyrazoline derivati

Details 3-[3',4'-Dichloro-6'-alkyl-phenyl]-.DELTA. 2-pyrazoline derivati 3-[3',4'-Dichloro-6'-alkyl-phenyl]-.DELTA. 2-pyrazoline derivati

1976-02-18

1977-08-30

Meyer, Donald B.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

25230127, 548378, D06P 138, C07D23106

Patent

active

040451690

ABSTRACT:
Novel pyrazolines are obtained by condensation of substituted propionphenones or vinyl-phenyl-ketones with substituted phenyl hydrazines. The products are useful as optical brighteners of a great variety of the shade of their fluorescence and of an improved fastness to light.

REFERENCES:
patent: 3378389 (1968-04-01), Schelfhammer
patent: 3639419 (1972-02-01), Rosenberger et al.
patent: 3755352 (1973-08-01), Rosenberger et al.

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