公开(公告)号：DE1211392B

公开(公告)日：1966-02-24

申请号：DEF0040190

申请日：1963-07-09

Applicant: HOECHST AG

Inventor： HOYER DR HANS ,  WELFERS DR EGIDIUS

IPC: C08G63/78 ,  C08G63/83

公开(公告)号：DE1264780B

公开(公告)日：1968-03-28

申请号：DEF0043269

申请日：1964-06-26

Applicant: HOECHST AG

Inventor： WELFERS DR EGIDIUS

IPC: C08G63/82 ,  C08K3/32

公开(公告)号：DE1259565B

公开(公告)日：1968-01-25

申请号：DEF0042219

申请日：1964-03-06

Applicant: HOECHST AG

Inventor： BACHMANN DR DITMAR ,  WELFERS DR EGIDIUS ,  HOYER DR HANS ,  FISCHER WOLFGANG

IPC: B01J19/24 ,  C08F2/00 ,  C08G63/78

Abstract: A multi-chamber reactor as described in the parent Specification for the continuous manufacture of polyethylene phthalates from dimethyl phthalates and ethylene glycol, has at least two chambers, preferably the last ones, provided with an adjustable discharge device 6, 7 communicating with a processing device disposed after the reactor so that the degree of polymerization and viscosity of the product is adjustable. The discharge devices 6, 7 are variable drive screw pumps or worm pumps leading through pipes 8 and 9 which join immediately before the inlet of a mixer 10 forming part of the processing device.