Azo derivatives of pyridine n-oxide for use in hair dye composit

Details Azo derivatives of pyridine n-oxide for use in hair dye composit Azo derivatives of pyridine n-oxide for use in hair dye composit

1977-06-15

1979-05-08

Clingman, A. Lionel

Toilet

Nail device

Compound tools

8 10, 8 101, 8 17, 8 41R, D06P 300, A45D 700

Patent

active

041530659

ABSTRACT:
Compositions for dyeing human hair contain in an aqueous or hydroalcoholic solution an azo derivative of pyridine N-oxide as a hair dye present in amounts of 0.001-1 weight percent of said composition which has a pH ranging from 3-9.5. Certain of said azo derivatives of pyridine N-oxide are new compounds.

REFERENCES:
patent: 3100766 (1963-08-01), Lewis
patent: 3118871 (1964-01-01), Brody et al.
patent: 3249597 (1966-05-01), Dehn et al.
patent: 3368941 (1968-02-01), Boosen
patent: 3386991 (1968-06-01), Gerber
patent: 3393190 (1968-07-01), Stright
patent: 3617179 (1971-11-01), Lewis
patent: 3955918 (1976-05-01), Lang

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