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. 24, 1998
Filed:
Mar. 21, 1996
Akira Kiyomine, Kawachi-gun, JP;
Yukihiro Kondo, Utsunomiya, JP;
Kenichi Morita, Bensheim, DE;
Shinobu Nagase, Haga-gun, JP;
Koichi Nakamura, Utsunomiya, JP;
Yoshinori Nishizawa, Utsunomiya, JP;
Bernd Nocker, Ober-Ramstadt, DE;
Hitoshi Sakaguchi, Haga-gun, JP;
Hiroyuki Suzuki, Kawachi-gun, JP;
Kao Corporation, , JP;
Abstract
The object of the invention is a new isomer mixture of 3-hydroxybutyl monothioglycollate and 3-hydroxy-1-methyl propyl monothioglycollate in a weight proportion of about 1.5:1 to 4:1, preferably about 2:1 to about 3:1, comprising less than 5%, preferably less than 2% by wt., of 1,3-butanediol thioglycollate, and its use as the sole or main reducing agent in compositions for permanent waving of human hair. The compositions have reduced smell, good waving properties and an extremely low sensitizing potential on human skin.