公开(公告)号：DE2813161A1

公开(公告)日：1979-09-27

申请号：DE2813161

申请日：1978-03-25

Applicant: BASF AG

Inventor： STERZEL HANS-JOSEF DIPL CHEM D ,  SCHMIDT FRANZ DIPL CHEM DR ,  PIRZER HANS DIPL CHEM DR

IPC: C08G63/00 ,  C08G63/16 ,  C08G63/18 ,  C08G63/78 ,  C08G63/26

Abstract: A process for the preparation of high molecular weight linear saturated polyesters derived from dicarboxylic acids or their ester-forming derivatives and aliphatic and/or cycloaliphatic diols, comprising the condensation of polyester precondensates having a relative viscosity of from 1.05 to 1.15 at from 220 DEG to 280 DEG C. under reduced pressure, wherein (a) the condensation is first started with from 70 to 95 percent by weight of the polyester precondensate and (b) after from 10 to 50% of the total condensation time the remaining 5 to 30 percent by weight of the polyester precondensate are added to the polyester melt undergoing condensation in accordance with (a), and the condensation is taken to completion.

公开(公告)号：DE2514129A1

公开(公告)日：1976-09-30

申请号：DE2514129

申请日：1975-03-29

Applicant: BASF AG

Inventor： HOERAUF WERNER DIPL CHEM DR ,  PIRZER HANS DIPL CHEM DR ,  GUENTHER ERNST ,  NEUMANN ECKART ,  DIETRICH ERNST

IPC: F15D1/02 ,  B01J1/00

公开(公告)号：DE2829624A1

公开(公告)日：1980-01-24

申请号：DE2829624

申请日：1978-07-06

Applicant: BASF AG

Inventor： STERZEL HANS-JOSEF DIPL CHEM D ,  SCHLICHTING KARL DIPL CHEM DR ,  PIRZER HANS DIPL CHEM DR

IPC: C08G63/183 ,  C08G63/18

公开(公告)号：DE2502835A1

公开(公告)日：1976-07-29

申请号：DE2502835

申请日：1975-01-24

Applicant: BASF AG

Inventor： SCHLICHTING KARL DIPL CHEM DR ,  WURMB ROLF DIPL CHEM DR ,  PIRZER HANS DIPL CHEM DR ,  SEYDL WOLFGANG DIPL CHEM DR

IPC: C08L67/00 ,  C08L67/02 ,  C08K5/04

公开(公告)号：DE2501988A1

公开(公告)日：1976-07-22

申请号：DE2501988

申请日：1975-01-18

Applicant: BASF AG

Inventor： WURMB ROLF DIPL CHEM DR ,  PIRZER HANS DIPL CHEM DR ,  KUNDE JOACHIM DIPL CHEM DR ,  DORST HANS GEORG DIPL ING DR

IPC: C08G63/42 ,  C08L67/02 ,  C08J3/00 ,  C08K5/06 ,  C08K5/17 ,  C08K5/34

公开(公告)号：DE2438102A1

公开(公告)日：1976-02-19

申请号：DE2438102

申请日：1974-08-08

Applicant: BASF AG

Inventor： SCHLICHTING KARL DIPL CHEM DR ,  WURMB ROLF DIPL CHEM DR ,  PIRZER HANS DIPL CHEM DR ,  SEYDL WOLFGANG DIPL CHEM DR

IPC: C08L67/00 ,  C08K7/20 ,  C08L67/02