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. 07, 1987
Filed:
Jan. 21, 1986
Myra A Hoshowski, Addison, IL (US);
Chaitanya Patel, Hanover Park, IL (US);
Helene Curtis, Inc., Chicago, IL (US);
Abstract
A dialkyl quaternary ammonium compound falling within the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different straight chain alkyl radicals C.sub.n H.sub.2n+1 wherein n is predominantly at least 12, and particularly where n equals predominantly 12-16, unexpectedly prevents Ext. D & C Violet No. 2 dye from staining skin while providing better deposition of the Ext. D & C Violet No. 2 onto human hair and wool to decrease or eliminate hair and wool yellowing. These fatty radicals R.sup.1 and R.sup.2 are generally derived from coconut oil, lauric acid, myristic acid, or palmitic acid and An.sup.- is any anion, particularly the halogen ions and particularly the chloride ion.