发明名称 |
Polyalkylenarylate mit hohem Carbonylendgruppengehalt |
摘要 |
According to the inventive method for producing polyalkylene arylates, an aromatic dicarboxylic acid or its esters or ester-forming derivatives is/are esterified or transesterified with a molar excess of an aliphatic dihydroxy compound and the resulting transesterification or esterification product is polycondensed. The invention is characterised in that the prepolymer is polycondensed with a viscosity number (VZ) of < 30 ml/g in the presence of an oxygen-containing gas.
|
申请公布号 |
DE19814529(A1) |
申请公布日期 |
1999.10.07 |
申请号 |
DE19981014529 |
申请日期 |
1998.04.01 |
申请人 |
BASF AG |
发明人 |
HEITZ, THOMAS;HEEL, HELMUT;BRAUNE, PETER;KLATT, MARTIN |
分类号 |
C08J5/00;C08G63/183;C08G63/78;C08L67/02;C08L69/00;C08L77/00;(IPC1-7):C08G63/181;C08G63/40 |
主分类号 |
C08J5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|