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:
Jun. 20, 1989
Filed:
Jun. 07, 1988
Applicant:
Inventors:
Assignee:
Wella Aktiengesellschaft, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
8410 ; 8406 ; 8407 ; 8411 ; 8412 ;
Abstract
Oxidative hair dyeing preparation having a content of a 1-hydroxyalkyl-2,5-diaminobenzene having the formula ##STR1## as developing substance, wherein R denotes hydroxyalkyl having 1 to 4 carbon atoms, or their salts with inorganic or organic acids. Preferably, these hair dyeing preparations will contain 1-hydroxymethyl-2,5-diaminobenzene in a concentration of approximately 0.1 to 3.0 percent by weight, this either alone as a developing substance, or in combination with the conventional coupling substances.