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:
Feb. 06, 1990
Filed:
Aug. 24, 1988
Marion D Beste, Arlington Heights, IL (US);
Johnson Products Co., Inc., Chicago, IL (US);
Abstract
A no-base type, aqueous alkali-based hair-straightening composition having a pH between 12 and about 14 initiates and enhances the permanent hair-straightening effect. The hair-straightening composition comprises, as an active hair-straightening agent, a strong alkali, and a water-soluble hair-straightening initiating agent. The initiating agent is a mercapto (C.sub.4 -C.sub.6) dicarboxylic acid having a sulfhydryl functional group on a carbon atom alpha to one or both of the carboxy acid groups, salt thereof or derivative thereof, and is a hair keratin-disulfide reducing agent. The initiated composition particularly augments and enhances the permanent hair-straightening benefits of sodium hydroxide, yet substantially overcomes negative hair conditioning problems normally associated therewith. Thiomalic acid and 2,5-dimercaptoadipic acid are preferred initiating agents. Also disclosed is a hair-straightening system and method for straightening hair with the foregoing compositions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile