| 发明名称 |
METHOD FOR PRODUCING POLYBUTYLENE TEREPHTHALATE |
| 摘要 |
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. |
| 申请公布号 |
US2015087034(A1) |
申请公布日期 |
2015.03.26 |
| 申请号 |
US201414560800 |
申请日期 |
2014.12.04 |
| 申请人 |
MITSUBISHI CHEMICAL CORPORATION ;GENOMATICA, INC. |
发明人 |
UTSUNOMIYA Masaru;IZAWA Yusuke;KONISHI Norikazu;MATSUZONO Shinichiro;SUZUKI Takayuki;JAPS Michael;BURK Mark;CLARK Warren |
| 分类号 |
C08G63/80;C12P7/18 |
主分类号 |
C08G63/80 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for producing polybutylene terephthalate comprising a step (a) of subjecting a diol component containing biomass-derived raw material 1,4-butanediol having a nitrogen content of 0.01 to 50 ppm by mass and a dicarboxylic acid component containing terephthalic acid or an alkyl terephthalate to esterification reaction or ester-exchange reaction, and a polycondensation reaction step (b) of subjecting the reactant obtained in the step (a) to polycondensation reaction and obtaining polybutylene terephthalate,
wherein the content of gamma butyrolactone in the raw material 1,4-butanediol is 1 to 100 ppm by mass. |
| 地址 |
Chiyoda-ku JP |
