Invention Grant
- Patent Title: Production method of polycarbonate resin
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Application No.: US14042102Application Date: 2013-09-30
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Publication No.: US08865859B2Publication Date: 2014-10-21
- Inventor: Shingo Namiki , Takehito Nagao
- Applicant: Mitsubishi Chemical Corporation
- Applicant Address: JP Chiyoda-ku
- Assignee: Mitsubishi Chemical Corporation
- Current Assignee: Mitsubishi Chemical Corporation
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2011-075386 20110330; JP2011-075439 20110330
- Main IPC: C08G64/00
- IPC: C08G64/00 ; C08G64/02 ; C08G64/30 ; C08G75/00
Abstract:
The present invention is a production method of a polycarbonate resin, including a step of performing melt polycondensation by continuously feeding a dihydroxy compound (A) having a predetermined moiety in a part of the structure and a carbonic acid diester each in a liquid state to a reactor, wherein the residence time from liquefaction of the dihydroxy compound to its feeding to a reactor is from 0.1 to 10 hours.
Public/Granted literature
- US08907048B2 Production method of polycarbonate resin Public/Granted day:2014-12-09
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