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:
Jun. 14, 1983
Filed:
Jul. 20, 1981
Applicant:
Inventors:
Kazuaki Suzuki, Osaka, JP;
Shohei Kuwabara, Suita, JP;
Assignee:
Showa Kagaku Kogyo Co., Ltd., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; D06P / ;
U.S. Cl.
CPC ...
8648 ; 8638 ; 8639 ; 8654 ; 8657 ; 25230121 ; 25230123 ; 25230124 ; 25230129 ;
Abstract
This invention relates to an optical brightener composition comprising at least one optical brightener and at least one color salt consisting of an optical brightener component having at least one anionic group and a color component having at least one basic group capable of forming a slat with the anionic group, which composition has an excellent brightening effect capable of giving a clearer whiteness as well as a high light fastness.