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:
Nov. 18, 2025
Filed:
Jul. 21, 2021
Kyoeisha Chemical Co., Ltd., Osaka, JP;
Yuya Takahashi, Nara, JP;
Bunsho Kure, Nara, JP;
Tsuyoshi Yamaguchi, Nara, JP;
Naomi Takenaka, Nara, JP;
Yoshinori Takashima, Osaka, JP;
Akira Harada, Osaka, JP;
Motofumi Osaki, Osaka, JP;
KYOEISHA CHEMICAL CO., LTD., Osaka, JP;
Abstract
The present invention provides a polymerizable unsaturated group-containing cyclodextrin derivative, which can be efficiently prepared with a higher yield and a higher purity, and which can be mass-produced. The polymerizable unsaturated group-containing cyclodextrin derivative is represented by the following general formula (1). (In the formula, Rrepresents any one of Rrepresents a hydrogen atom, an acyl group having 2 to 50 carbon atoms, or an alkyl group having 1 to 30 carbon atoms. Rrepresents a group represented by the following general formula (5). (In the formula, R's are the same as or different from each other, and each represent a hydrogen atom, an acyl group having 2 to 50 carbon atoms, an alkyl group having 1 to 30 carbon atoms, or —CONHR(Ris an alkyl group having 1 to 20 carbon atoms), and 20% or more of R's is any one of an acyl group having 2 to 50 carbon atoms, an alkyl group having 1 to 30 carbon atoms, or —CONHR. x is an integer of 5 to 7)).