Invention Grant
- Patent Title: Method for producing oxymethylene copolymer
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Application No.: US14901783Application Date: 2014-06-30
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Publication No.: US10280258B2Publication Date: 2019-05-07
- Inventor: Daigo Nakaya , Toru Takahashi , Satoshi Mochida
- 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: JP2013-137734 20130701; JP2013-137735 20130701
- International Application: PCT/JP2014/067426 WO 20140630
- International Announcement: WO2015/002147 WO 20150108
- Main IPC: C08G65/10
- IPC: C08G65/10 ; C08G65/30 ; C08K5/13 ; C08K5/3492 ; C08G2/04 ; C08G2/06 ; C08G2/10 ; C08G2/24 ; C08L59/04
Abstract:
The present invention provides a method for producing an oxymethylene copolymer which involves polymerizing trioxane and a comonomer cationically at a polymerization temperature of 135° C. to 300° C. in the presence of a protic acid salt having the molecular weight of 1000 or less, and at least one polymerization initiator selected from the group consisting of protic acids, protic acid anhydrides, and protic acid ester compounds having the molecular weight of 1000 or less.
Public/Granted literature
- US20160369050A1 METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER Public/Granted day:2016-12-22
Information query
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