发明名称 |
Process for producing copolyester resin |
摘要 |
In the production method of the present invention, a copolyester of intended sublimable diol proportion is produced by the reaction of a dicarboxylic acid and/or an ester-forming derivative thereof with a sublimable diol and a non-sublimable diol with an increased conversion of the sublimable diol. Since the escape of the sublimable diol is effectively prevented, the process solves the problem of clogging pressure-reduced pipes, etc. of an apparatus for polyester resin production.
|
申请公布号 |
US6653440(B2) |
申请公布日期 |
2003.11.25 |
申请号 |
US20020288308 |
申请日期 |
2002.11.06 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY |
发明人 |
HIROKANE TAKESHI;IKEDA TSUYOSHI;KUWAHARA SHOJIRO |
分类号 |
C08G63/16;C08G63/672;C08G63/78;(IPC1-7):C08G65/00 |
主分类号 |
C08G63/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|