Invention Grant
- Patent Title: Anti-fogging film-forming material, coating liquid for forming anti-fogging film, anti-fogging article, and methods for producing these
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Application No.: US14385065Application Date: 2013-02-20
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Publication No.: US09765224B2Publication Date: 2017-09-19
- Inventor: Chiharu Takimoto , Toshihiro Hirano , Toru Ashida , Nozomi Oonishi
- Applicant: Central Glass Company, Limited
- Applicant Address: JP Ube-shi
- Assignee: Central Glass Company, Limited
- Current Assignee: Central Glass Company, Limited
- Current Assignee Address: JP Ube-shi
- Agency: Crowell & Moring LLP
- Priority: JP2012-055465 20120313; JP2012-234409 20121024; JP2012-251340 20121115; JP2013-020596 20130205
- International Application: PCT/JP2013/054179 WO 20130220
- International Announcement: WO2013/136932 WO 20130919
- Main IPC: B32B27/38
- IPC: B32B27/38 ; C09D5/16 ; C09D5/00 ; C08F220/54 ; C09D163/00 ; C08G59/42 ; C03C17/00 ; C03C17/32 ; C03C17/34 ; C03C23/00 ; C09D133/24 ; C08F220/32
Abstract:
Disclosed is an antifogging film-forming material obtained by reacting, in the presence of a quaternary ammonium salt or quaternary phosphonium salt, a copolymer represented by a certain general formula with a multifunctional epoxy compound having a solubility of 40-100 mass % in 25° C. water. The antifogging film-forming material is characterized by having a weight average molecular weight of 100,000-5,000,000. With this material, it becomes possible to obtain an antifogging article excellent in antifogging property, heat resistance, chemical resistance and abrasion resistance.
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