Invention Grant
US09441077B2 Manufacturing method for organopolysiloxane-polyoxyalkylene block copolymer
有权
有机聚硅氧烷 - 聚氧化烯嵌段共聚物的制造方法
- Patent Title: Manufacturing method for organopolysiloxane-polyoxyalkylene block copolymer
- Patent Title (中): 有机聚硅氧烷 - 聚氧化烯嵌段共聚物的制造方法
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Application No.: US14365883Application Date: 2012-12-04
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Publication No.: US09441077B2Publication Date: 2016-09-13
- Inventor: Takatoshi Toyama , Masaru Ozaki , Seiji Hori , Mari Wakita
- Applicant: Dow Corning Toray Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: DOW CORNING TORAY CO., LTD.
- Current Assignee: DOW CORNING TORAY CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Howard & Howard Attorneys PLLC
- Priority: JPJP2011-275720 20111216
- International Application: PCT/JP2012/081869 WO 20121204
- International Announcement: WO2013/089043 WO 20130620
- Main IPC: C08G77/46
- IPC: C08G77/46 ; A61Q5/00 ; A61K8/898 ; A61K8/894
Abstract:
The present invention relates to a manufacturing method for an organopolysiloxane-polyoxyalkylene block copolymer obtained by condensation reaction of a polyoxyalkylene compound having a particular chemical structure and an organopolysiloxane having a particular chemical structure. The manufacturing method according to the present invention can enable an easy manufacturing of a high molecular weight organopolysiloxane-polyoxyalkylene block copolymer and provide an organopolysiloxane-polyoxyalkylene block copolymer where an amount of volatile cyclic polysiloxane produced as a by-product is small.
Public/Granted literature
- US20140336401A1 Manufacturing Method For Organopolysiloxane-Polyoxyalkylene Block Copolymer Public/Granted day:2014-11-13
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