Invention Grant
- Patent Title: Continuous process for the production of melt polycarbonate
- Patent Title (中): 生产熔融聚碳酸酯的连续工艺
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Application No.: US13982537Application Date: 2012-12-17
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Publication No.: US08962787B2Publication Date: 2015-02-24
- Inventor: Ignacio Vic Fernandez , Fernan Mateos Salvador , Mykhaylo Lyakhovych , Sergio Ferrer Nadal
- Applicant: SABIC Innovative Plastics IP B.V.
- Applicant Address: NL
- Assignee: Sabic Global Technologies B.V.
- Current Assignee: Sabic Global Technologies B.V.
- Current Assignee Address: NL
- Agency: Cantor Colburn LLP
- Priority: EP12382308 20120730
- International Application: PCT/IB2012/005739 WO 20121217
- International Announcement: WO2014/020384 WO 20140206
- Main IPC: C08G64/00
- IPC: C08G64/00 ; C08G64/30 ; C08G63/02

Abstract:
A method for producing polycarbonate by melt polymerization can comprise: (a) adding acetone, diaryl carbonate, and dihydroxy compound to the melt polymerization unit, wherein the acetone is added to the melt polymerization unit as a mixture with the diaryl carbonate and/or the dihydroxy compound; (b) adding a catalyst to the melt polymerization unit, optionally without separating out acetone prior to the addition of the catalyst; and (c) operating the melt polymerization unit under conditions so that the diaryl carbonate(s) and dihydroxy compound(s); dihydroxy compound reacts with the diaryl carbonate to produce polycarbonate with a desired specification, and a phenol by-product.
Public/Granted literature
- US20140206833A1 CONTINUOUS PROCESS FOR THE PRODUCTION OF MELT POLYCARBONATE Public/Granted day:2014-07-24
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