The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 1986
Filed:
Nov. 21, 1984
Applicant:
Inventors:
Jean-Francois Grollier, Paris, FR;
Jean Cotteret, Franconville, FR;
Andree Bugaut, Boulogne, FR;
Alain Genet, Neuilly Plaisance, FR;
Assignee:
L'Oreal, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C09B / ; D06P / ;
U.S. Cl.
CPC ...
8410 ; 8414 ; 8415 ;
Abstract
The invention provides a composition and process for directly dyeing keratinic fibres. The combination of 1-N-methylamino-2-nitro-4-N'-methyl-N'-(2' ,3'-dihydroxypropyl)amino benzene with certain 2-nitroparaphenylenediamine direct nitro dyes produces a dye composition in which the dyes can be more concentrated (without crystallizing out) and hence produce darker shades.