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. 25, 2016
Filed:
Dec. 05, 2011
Tomoaki Yamasaki, Hyogo, JP;
Shinya Okazaki, Hyogo, JP;
Hiroki Okazaki, Hyogo, JP;
Shigeki Hamamoto, Hyogo, JP;
Changming Zhao, Chiba, JP;
Tomoaki Yamasaki, Hyogo, JP;
Shinya Okazaki, Hyogo, JP;
Hiroki Okazaki, Hyogo, JP;
Shigeki Hamamoto, Hyogo, JP;
Changming Zhao, Chiba, JP;
Sumitomo Seika Chemicals Co., Ltd., Hyogo, JP;
Advanced Softmaterials Inc., Chiba, JP;
Abstract
The present invention aims to provide an industrially advantageous method for producing an aqueous dispersion of pseudopolyrotaxane enabling to produce an aqueous dispersion of pseudopolyrotaxane having good fluidity and excellent dispersion stability of the pseudopolyrotaxane particles therein. The present invention relates to a method for producing an aqueous dispersion of pseudopolyrotaxane. The method includes: a mixing step of a dissolving polyethylene glycol and a cyclodextrin in an aqueous medium to prepare a mixed solution; and a cooling step of continuously or intermittently cooling the mixed solution in a state of flux to precipitate pseudopolyrotaxane particles. The pseudopolyrotaxane particles contain the polyethylene glycol which is included in the cavities of the cyclodextrin molecules in a skewered manner.