公开(公告)号：DE1009810B

公开(公告)日：1957-06-06

申请号：DEF0017657

申请日：1955-06-02

Applicant: HOECHST AG

Inventor： GERSTENBERG DIPL-ING HELMUT ,  BACHMANN DR-ING DITMAR ,  BIER DR GERHARD

IPC: B01J19/00 ,  C08F6/22

公开(公告)号：DE1274445B

公开(公告)日：1968-08-01

申请号：DEF0029101

申请日：1959-08-05

Applicant: HOECHST AG

Inventor： PRINZ DR EBERHARD ,  HANKE DIPL-ING KARL ,  GERSTENBERG DIPL-ING HELMUT ,  WALBURG RICHARD

IPC: F04B43/067

公开(公告)号：DE961576C

公开(公告)日：1957-04-11

申请号：DEF0017533

申请日：1955-05-15

Applicant: HOECHST AG

Inventor： BACHMANN DR DITMAR ,  MEYER DR KURT ,  ORTNER DIPL-ING HERBERT ,  GERSTENBERG DIPL-ING HELMUT

IPC: C08F6/02

公开(公告)号：DE1189271B

公开(公告)日：1965-03-18

申请号：DEF0036779

申请日：1962-05-11

Applicant: HOECHST AG

Inventor： BACHMANN DIPL-ING DR DITMAR ,  GERSTENBERG DIPL-ING HELMUT ,  GRAFEN DIPL-ING KARLHEINZ ,  PASZTHORY DR EMMERICH ,  SCHROTT DR ERWIN

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.

公开(公告)号：DE1167314B

公开(公告)日：1964-04-09

申请号：DEF0034845

申请日：1961-09-02

Applicant: HOECHST AG

Inventor： GERSTENBERG DIPL-ING HELMUT ,  SCHILD DIPL-ING REINHARD ,  HALDER DIPL-ING RUDOLF ,  SCHUBERT DIPL-ING WOLFGANG

IPC: B01D19/00

公开(公告)号：DE1151939B

公开(公告)日：1963-07-25

申请号：DEF0025751

申请日：1958-05-16

Applicant: HOECHST AG

Inventor： GRUSCHKE DR HANS ,  MEDEM DR HEINZ ,  GRUENEWALD DR KARL HEINZ ,  GERSTENBERG DIPL-ING HELMUT

IPC: C08G85/00 ,  C08K3/00 ,  C08K5/42 ,  D01F1/04 ,  D01F6/62 ,  D01F6/92

Abstract: In the pigmenting of fibre-forming polyesters of dihydric alcohols and aromatic or aliphatic dicarboxylic acids, there is used a pigment dispersion obtained by dispersing the pigment in part of the dihydric alcohol together with a dispersion agent obtained by condensing (a) an aromatic hydroxy compound and an o -sulphomethyl compound of formula R-CH2-SO3X where R is an aromatic residue and X is an alkali metal or (b) a naphthalene sulphonic acid and formaldehyde, followed by removing coarse particles (e.g. greater than 3m ) from the dispersion by centrifuging or sedimentation. The pigment dispersion is then introduced into (1) a mixture of the dihydric alcohol and the dicarboxylic acid (or ester thereof) and the mixture polycondensed or (2) a mixture obtained by heating polyethylene terephthalate waste with ethylene glycol (the mixture being filtered either before or after addition of the pigment dispersion) and the mixture polycondensed. Examples describe the preparation of polyethylene terephthalate pigmented with carbon black. Other polyesters referred to are polyethylene terephthalate in which all or part of the ethylene glycol is replaced by 1:3-propane- or 1:4-butanediol or in which part of the terephthalic acid is replaced by isophthalic or sebacic acid. Specifications 250,398 and 610,137 are referred to.

公开(公告)号：DE1128138B

公开(公告)日：1962-04-19

申请号：DEF0024702

申请日：1957-12-27

Applicant: HOECHST AG

Inventor： GERSTENBERG DIPL-ING HELMUT ,  GRUENEWALD DR KARL ,  MEDEM DR HEINZ ,  LADEMANN DR RUDOLF

IPC: C08G85/00 ,  C08K3/00 ,  C08K3/013 ,  C08K5/42