Invention Grant
- Patent Title: Polyformal resin copolymer and method for producing the same
- Patent Title (中): 聚甲醛树脂共聚物及其制造方法
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Application No.: US14439469Application Date: 2013-11-06
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Publication No.: US09321887B2Publication Date: 2016-04-26
- Inventor: Munenori Shiratake , Yoshio Nishimura , Noriyuki Kato , Takashi Ishii , Hirohito Ishizuka
- Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Applicant Address: JP Tokyo
- Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Current Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2012-245123 20121107
- International Application: PCT/JP2013/079996 WO 20131106
- International Announcement: WO2014/073559 WO 20140515
- Main IPC: C08G63/02
- IPC: C08G63/02 ; C08G65/40 ; G02B1/04 ; G02C7/00 ; C08G64/00
Abstract:
Provided is a thermoplastic resin having a high refractive index, which is favorable as an optical material. Provided are a polyformal resin copolymer comprising a high refractive index diol that has a fluorene skeleton and an aromatic diol that has a low glass-transition point when polymerized, and a method for producing the same.
Public/Granted literature
- US20150284510A1 POLYFORMAL RESIN COPOLYMER AND PRODUCTION METHOD Public/Granted day:2015-10-08
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