发明名称 |
KONTINUIERLICHE HERSTELLUNG VON POLY(TRIMETHYLENTEREPHTHALAT) |
摘要 |
This invention relates to a continuous process for production of poly(trimethylene terephthalate), wherein gaseous 1,3-propanediol by-product resulting from the process is condensed in a condenser, the total amount of any trimethylene terephthalate cyclic dimer and poly(trimethylene terephthalate) in the condensed by-product 1,3-propanediol is adjusted, and a portion of the condensed by-product is recycled to the condenser while another portion is recycled back into the process. |
申请公布号 |
DE602006020345(D1) |
申请公布日期 |
2011.04.07 |
申请号 |
DE20066020345T |
申请日期 |
2006.12.21 |
申请人 |
E.I. DU PONT DE NEMOURS AND CO. |
发明人 |
ENG, JOHN HARVEY;BLUM, EMILY A.;GREEN, DANIEL ALBERT;GIARDINO, CARL J.;PARRISH, GENE;TROTTER, ROBERT E.;WILSON, GARY J. |
分类号 |
C08G63/00 |
主分类号 |
C08G63/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|