Invention Grant
- Patent Title: Resin-linear organopolysiloxane block copolymer, use of same, and method for producing same
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Application No.: US16339290Application Date: 2017-10-03
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Publication No.: US10940105B2Publication Date: 2021-03-09
- Inventor: Haruhiko Furukawa , John Bernard Horstman , Tomohiro Iimura , Tadashi Okawa , Steven Swier
- Applicant: DOW TORAY CO., LTD. , DOW SILICONES CORPORATION
- Applicant Address: JP Tokyo; US MI Midland
- Assignee: DOW TORAY CO., LTD.,DOW SILICONES CORPORATION
- Current Assignee: DOW TORAY CO., LTD.,DOW SILICONES CORPORATION
- Current Assignee Address: JP Tokyo; US MI Midland
- Agency: Warner Norcross + Judd LLP
- International Application: PCT/JP2017/036021 WO 20171003
- International Announcement: WO2018/066572 WO 20180401
- Main IPC: C08G77/44
- IPC: C08G77/44 ; A61K8/891 ; A61Q19/00 ; A61K8/894 ; C08L83/10 ; A61K8/06 ; A61K8/34 ; A61K8/90 ; A61Q1/02 ; A61Q17/04 ; C08G77/42 ; C08G77/46 ; C08G77/16

Abstract:
Provided is a resin-linear organopolysiloxane block copolymer which has a high degree of freedom in formulation due to excellent compatibility with other materials, in addition to exhibiting excellent film forming properties and followability of a film, while the stickiness of a film is suppressed. The resin-linear organopolysiloxane block copolymer has: a resin structure (A1) block that has siloxane units represented by R1SiO3/2 (wherein R1 represents a monovalent organic group, a hydroxyl group, or an alkoxy group having 1 to 6 carbon atoms) and SiO4/2; and a linear structure (A2) block represented by (R2SiO2/2)n (wherein n represents a number of 5 or more while R represents an alkyl group, a fluoroalkyl group, or an aryl group) in each molecule. The resin structure (A1) and the linear structure (A2) are linked to each other by an Si—O—Si bond, and an Si atom bonded to the resin structure (A1) constitutes an RSiO3/2 unit.
Public/Granted literature
- US20200253855A9 NOVEL RESIN-LINEAR ORGANOPOLYSILOXANE BLOCK COPOLYMER, USE OF SAME, AND METHOD FOR PRODUCING SAME Public/Granted day:2020-08-13
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