公开(公告)号：DE1958777A1

公开(公告)日：1971-05-27

申请号：DE1958777

申请日：1969-11-22

Applicant: BASF AG

Inventor： BEER LUDWIG DR ,  FISCHER HERMANN DR DIPL-ING ,  HEIL EDUARD DIPL-ING

IPC: C08G63/00 ,  B01J14/00 ,  C08G63/78 ,  C08G17/01

Abstract: 1321115 Polymerisation apparatus BADISCHE ANILIN-& SODA-FABRIK AG 20 Nov 1970 [22 Nov 1969] 55205/70 Heading B1X [Also in Division C3] Apparatus used in the production of linear polyester by a continuous process in which diglycol terephthalate and/or its precondensate are polycondensed, optionally in the presence of other polyester-forming components, at a temperature of 240‹-300‹C at reduced pressure, comprise a bundle of stationary, substantially vertical heated tubes 1 surrounded by heating jacket 2 containing heating medium 3 immediately above which is located at least one hold tank 4, which may be heated, connected to a vacuum at outlet 5, the major portion or all of the heat required to heat the reaction mixture and evaporate the volatile portions thereof being applied to the tubes. Liquid catching surfaces 6 may be provided between tank 4 and vacuum outlet 5. The heating jacket surrounding the bundle of tubes may be divided into two separate zones, the temperature of the heating medium in the upper zone being higher than that in the lower zone. Bottle necks may be provided in the tubes by squeezing them to provide slot-like depressions using a suitable die or by inserting orifice plates or capillaries.

公开(公告)号：DE1956286A1

公开(公告)日：1971-05-13

申请号：DE1956286

申请日：1969-11-08

Applicant: BASF AG

Inventor： FISCHER HERMANN DR ,  HEIL EDUARD DIPL-ING ,  SWOBODA JOHANN DR ,  THOMA RICHARD DR

IPC: C08F6/10 ,  C08F3/76