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:
Aug. 03, 2010
Filed:
Oct. 15, 2008
Yuki Kokeguchi, Chiba, JP;
Kyoichi Takeda, Chiba, JP;
Kiyotaka Kawai, Chiba, JP;
Kokyu Alcohol Kogyo Co., Ltd., Chiba, JP;
Abstract
Provided are acidic hair dye compositions in which the dye has a high permeability into hair, the dye can be applied uniformly, and the composition has excellent staining property, safety and sense of use at the time of hair dyeing. The acidic hair dye compositions of the present invention comprise at least one dibasic acid ester compound represented by general formula I below: wherein, in general formula I, Ris an alkylene group which may have a substituent with 2 to 4 carbon atoms, Rand Rare, independently from each other, an alkyl group which may have a substituent with 1 to 4 carbon atoms, Rand Rare, independently from each other, hydrogen, methyl group or ethyl group, m and n is, independently from each other, an integer of 0 to 4, wherein m+n≧1 (with the proviso that the case is excluded in which Rand Rare both ethyl group, and m and n are both 1).