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. 31, 2021
Filed:
May. 24, 2018
Toray Industries, Inc., Tokyo, JP;
Hiroko Tanaka, Nasushiobara, JP;
Yuka Isago, Nagoya, JP;
Itaru Asano, Nagoya, JP;
Hiroshi Takezaki, Nagoya, JP;
Hisashi Miyama, Tokyo, JP;
Shiro Honda, Nagoya, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A polysiloxane-polyalkylene glycol block copolymer is obtained by reacting a polysiloxane (A) having any functional group selected from a carboxylic anhydride group, a hydroxyl group, an epoxy group, a carboxyl group, and an amino group with a polyalkylene glycol (B) having any functional group selected from a carboxylic anhydride group, a hydroxyl group, a carboxyl group, an amino group, an epoxy group, a thiol group, and an isocyanate group, wherein a content of a structure derived from the polysiloxane (A) is 20% by mass or more and 90% by mass or less with respect to 100% by mass of the polysiloxane-polyalkylene glycol block copolymer.