公开(公告)号：DE1916297A1

公开(公告)日：1970-10-15

申请号：DE1916297

申请日：1969-03-29

Applicant: BASF AG

Inventor： HANS-GEORG TRIESCHMANN DR DR ,  HERBERT WILLERSINN DR ,  EDUARD HEIL DIPL-ING

IPC: B29C44/34 ,  C08J9/14 ,  C08F47/10

公开(公告)号：DE1915950A1

公开(公告)日：1969-12-04

申请号：DE1915950

申请日：1969-03-28

Applicant: BASF AG

Inventor： KARL-HEINZ BAUMANN DR ,  DIETER ZETTLER DIPL-ING HANS ,  KLAUS BRONSTERT DR ,  EDUARD HEIL DIPL-ING ,  HEINZ WEBER DR

IPC: B01J2/20 ,  B29B9/06 ,  B29C44/34 ,  B29C17/14

公开(公告)号：DE1916220A1

公开(公告)日：1970-10-01

申请号：DE1916220

申请日：1969-03-29

Applicant: BASF AG

Inventor： EDUARD HEIL DIPL-ING ,  HANS-GEORG TRIESCHMANN DR DR ,  HERBERT WILLERSINN DR ,  HERBERT BOLTE DR ,  KLAUS BRONSTERT DR

IPC: B29C44/34 ,  C08J9/16 ,  C08F47/10

公开(公告)号：DE1915577A1

公开(公告)日：1970-09-17

申请号：DE1915577

申请日：1969-03-27

Applicant: BASF AG

Inventor： EDUARD HEIL DIPL-ING ,  HEINZ POHLEMANN DR ,  HERMANN FISCHER DR ,  JOHANN SWOBODA DR

IPC: C08F20/42

Abstract: Reaction temp. is kept constant by control of condensation conditions on the condenser, as is the concentration ratio of monomer(s) and DMF in the reaction mixture by control of additions of DMF as a function of the saturation vapour pressure above the reaction mixture, and also the polymer content of the reaction mixture by control of dwell time. Pref. a 35-to 45% monomer soln. is introduced in the reaction zone and polymn. is effected as 55 to 65 degrees C.

公开(公告)号：DE1495145A1

公开(公告)日：1969-01-30

申请号：DE1495145

申请日：1963-10-10

Applicant: BASF AG

Inventor： WOLFGANG SLIWKA DR ,  EDUARD HEIL DIPL-ING

IPC: B01J19/00 ,  B01J19/18 ,  C08F2/00 ,  C08F2/04 ,  C08F2/18 ,  C08F2/22 ,  C08F

公开(公告)号：DE1494967A1

公开(公告)日：1968-12-12

申请号：DE1494967

申请日：1964-09-04

Applicant: BASF AG

Inventor： EDUARD HEIL DIPL-ING ,  HERBERT SPOOR DR ,  HEINZ POHLEMANN DR ,  ALFRED MUENSTER DR ,  PETER PFAFF DR

IPC: C08J3/14

公开(公告)号：DE1926767A1

公开(公告)日：1970-11-26

申请号：DE1926767

申请日：1969-05-24

Applicant: BASF AG

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

IPC: C08G63/78

Abstract: Polyesters containing is not 80 weight % of ethylene terephthalate and having a limit viscosity of up to 0.40, are produced by polycondensation of diglycol terephthalate or its oligomers, possible together with other polyester-forming components, at 240-320 degrees C, in thin layers and under reduced pressure, by flowing the ester or oligomer down the inside of a stationary heated tube which is constricted at intervals; the vapours which form during the polycondensation are withdrawn in the same direction as the stream of product. The apparatus is simple and involves no moving parts. Loss of terephthalic acid is reduced. The apparatus is self-cleaning. Thermal decomposition of the product as a result of long residence times is avoided.

公开(公告)号：DE1720340A1

公开(公告)日：1970-09-10

申请号：DE1720340

申请日：1968-01-05

Applicant: BASF AG

Inventor： HERMANN FISCHER DR-ING ,  EDUARD HEIL DIPL-ING ,  HEINZ POHLEMANN DR ,  JOHANN SWOBODA DR

IPC: C08F20/42 ,  C08F3/76