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:
Oct. 04, 2016
Filed:
Jul. 05, 2011
Yoshio Okamoto, Harbin, CN;
Junqing LI, Harbin, CN;
Xiande Shen, Harbin, CN;
Jun Shen, Harbin, CN;
Haitao Qu, Harbin, CN;
Guangshun Wu, Harbin, CN;
Yoshio Okamoto, Harbin, CN;
Junqing Li, Harbin, CN;
Xiande Shen, Harbin, CN;
Jun Shen, Harbin, CN;
Haitao Qu, Harbin, CN;
Guangshun Wu, Harbin, CN;
DAICEL CORPORATION, Osaka-shi, Osaka, JP;
Abstract
An object of the present invention is to provide a novel polysaccharide derivative used for a separating agent for optical isomers. The novel polysaccharide derivative contains a structure in which a hydrogen atom of a hydroxyl group or an amino group at the 2-position in a structural unit of the polysaccharide is substituted with a monovalent group represented by the following general formula (1), and a hydrogen atom of a hydroxyl group or an amino group at the 3-position in the structural unit is substituted with a monovalent group represented by the following general formula (2):R—NH—CO—  (1)R—NH—CO—  (2)where Rand Rrepresent substituted or unsubstituted aryl groups which are different from each other.