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:
Jan. 22, 1985
Filed:
Jan. 15, 1981
Andree Bugaut, Boulogne, FR;
Francoise Estradier, Paris, FR;
L'Oreal, Paris, FR;
Abstract
This invention pertains to compounds suitable for dyeing keratin fibers, especially human hair. The compounds have the formula: ##STR1## or an acid addition salt thereof, in which formula R.sub.1 and R.sub.2 form, together with the nitrogen atom to which they are bonded, a morpholino or piperidino ring and R represents a hydrogen atom. This invention also pertains to compositions for dyeing keratin fibers, especially human hair, such composition containing the compounds set forth above and/or compounds of formula (I) wherein R.sub.1 represents a hydrogen atom, R.sub.2 represents a tetrahydrofurfuryl or methoxyethyl radical and R represents a hydrogen atom or a methyl radical, or an acid addition salt thereof. The invention also pertains to the method of using these compositions.