Invention Grant
- Patent Title: Method for producing polybutylene terephthalate
- Patent Title (中): 聚对苯二甲酸丁二醇酯的制造方法
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Application No.: US14560800Application Date: 2014-12-04
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Publication No.: US09556307B2Publication Date: 2017-01-31
- Inventor: Masaru Utsunomiya , Yusuke Izawa , Norikazu Konishi , Shinichiro Matsuzono , Takayuki Suzuki , Michael Japs , Mark Burk , Warren Clark
- Applicant: MITSUBISHI CHEMICAL CORPORATION , GENOMATICA, INC.
- Applicant Address: JP Chiyoda-ku US CA San Diego
- Assignee: MITSUBISHI CHEMICAL CORPORATION,Genomatica, Inc.
- Current Assignee: MITSUBISHI CHEMICAL CORPORATION,Genomatica, Inc.
- Current Assignee Address: JP Chiyoda-ku US CA San Diego
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2012-128064 20120605
- Main IPC: C12P7/62
- IPC: C12P7/62 ; C08G63/00 ; C08G63/80 ; C08G63/183 ; C08G63/78 ; C12P7/18 ; C12N9/04 ; C12N9/02 ; C12N9/00
Abstract:
The present invention aims to provide a method for producing polybutylene terephthalate (PBT) with an excellent color using biomass-derived 1,4-butanediol (BG). The invention relates to a method for producing PBT comprising a step of subjecting a diol component containing raw material 1,4-BG having a nitrogen content of 0.01 to 50 ppm by mass and a dicarboxylic acid component to esterification or ester-exchange reaction, and a polycondensation reaction step for obtaining PBT from the reactant, wherein the content of gamma butyrolactone in the raw material 1,4-BG is 1 to 100 ppm by mass.
Public/Granted literature
- US20150087034A1 METHOD FOR PRODUCING POLYBUTYLENE TEREPHTHALATE Public/Granted day:2015-03-26
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