公开(公告)号：RO68474A

公开(公告)日：1980-07-15

申请号：RO8172075

申请日：1975-03-01

Applicant: HOECHST AG

Inventor： RUST KURT ,  SCHROTT ERWIN ,  STRAMETZ HELMUT ,  KABLITZ HANS J

IPC: C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  B01J21/06

公开(公告)号：AU4805279A

公开(公告)日：1979-12-20

申请号：AU4805279

申请日：1979-06-14

Applicant: HOECHST AG

Inventor： MAYER GUNTER ,  FISCHER EBERHARD ,  STRAMETZ HELMUT

IPC: C08F6/00 ,  C08F6/06 ,  C08F6/28 ,  C08F10/06 ,  C08F6/24 ,  C08J11/02 ,  C08J11/00

Abstract: During the recovery of the unreacted propylene from the mother liquor obtained in the polymerization of liquid propylene, the major part of the propylene is evaporated in a first evaporation step at a low temperature and the remaining part is evaporated in a second evaporator at a high temperature. In this way an early agglomerization of the atactic and/or low-molecular weight polymer dissolved in the mother liquor and fouling of the heat exchanger tubes and/or of the column trays is avoided.

公开(公告)号：AU7863575A

公开(公告)日：1976-09-02

申请号：AU7863575

申请日：1975-02-27

Applicant: HOECHST AG

Inventor： RUST KURT ,  SCHROTT ERWIN ,  STRAMETZ HELMUT ,  WALTER DIETER ,  KABLITZ HANS-JURGEN

IPC: C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F1/56 ,  C08F3/10

公开(公告)号：BR8404369A

公开(公告)日：1985-07-30

申请号：BR8404369

申请日：1984-08-31

Applicant: HOECHST AG

Inventor： DORRER BERNHARD ,  STRAMETZ HELMUT

IPC: C08F4/10 ,  C08F4/16 ,  C08F297/08 ,  C08L23/12 ,  C08L23/14 ,  C08F4/64 ,  C08F10/06

Abstract: A polypropylene molding composition with a good hardness and good impact strength at low temperatures is formed by two-stage polymerization of propylene and ethylene in liquid propylene in the presence of a special supported catalyst.

公开(公告)号：CA1109494A

公开(公告)日：1981-09-22

申请号：CA329816

申请日：1979-06-14

Applicant: HOECHST AG

Inventor： MAYER GUNTER ,  FISCHER EBERHARD ,  STRAMETZ HELMUT

IPC: C08F6/00 ,  C08F6/06 ,  C08F6/28 ,  C08F10/06 ,  C07C11/06

Abstract: PROCESS FOR RECOVERING UNREACTED PROPYLENE IN THE MASS POLYMERIZATION of the disclosure During the recovery of the unreacted propylene from the mother liquor obtained in the polymerization of liquid propylene, the major part of the propylene is evaporated in a first evaporation step at a low temperature and the remaining part is evaporated in a second evaporator at a high temperature. In this way an early agglomerization of the atactic and/or lowmolecular weight polymer dissolved in the mother liquor and fouling of the heat exchanger tubes and/or of the column trays is avoided.

公开(公告)号：AU5268179A

公开(公告)日：1980-05-15

申请号：AU5268179

申请日：1979-11-09

Applicant: HOECHST AG

Inventor： DORRER BERNHARD ,  KLOOS FRIEDRICH ,  NEUMANN HORST ,  STRAMETZ HELMUT

IPC: C08L23/00 ,  C08L7/00 ,  C08L21/00 ,  C08L23/06 ,  C08L23/12 ,  C08L23/16 ,  C08L101/00 ,  C08F4/64 ,  C08F110/06

Abstract: A polypropylene molding composition of polypropylene, ethylene-propylene copolymer and polyethylene having a high hardness and increased impact strength and homogeneity after processing is obtained by way of a continuous three-stage polymerization, when the melt viscosities of the polymer mixtures obtained in the individual stages are in a determined ratio of one to the other.

公开(公告)号：CA1074775A

公开(公告)日：1980-04-01

申请号：CA221176

申请日：1975-02-28

Applicant: HOECHST AG

Inventor： RUST KURT ,  SCHROTT ERWIN ,  STRAMETZ HELMUT ,  KABLITZ HANS-JURGEN

IPC: C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F4/66

Abstract: Process for the manufacture of a catalyst A catalyst of high activity and stereospecificity in .alpha.-olefin polymerization is obtained by subjecting titanium Trichloride, obtained by reduction of titanium tetrachloride with aluminum alkyl halides, to two thermal treatments, the second thermal treatment being carried out in the presence of a dialkyl ether and optionally of a cyclopolyene, and optionally subjecting the treated product to an after-treat-ment with an aluminum alkyl halide, optionally in the presence of a small amount of a cyclopolyene and/or an olefin.

公开(公告)号：AU4847479A

公开(公告)日：1980-01-03

申请号：AU4847479

申请日：1979-06-28

Applicant: HOECHST AG

Inventor： FISCHER EBERHARD ,  MAYER GUNTER ,  STROER FRIEDEL ,  STRAMETZ HELMUT

IPC: C07C7/10 ,  C07C1/00 ,  C07C11/06 ,  C07C67/00 ,  C08F2/02 ,  C08F6/28 ,  C08F110/06 ,  C08F6/24

公开(公告)号：AU2816877A

公开(公告)日：1979-03-01

申请号：AU2816877

申请日：1977-08-24

Applicant: HOECHST AG

Inventor： STRAMETZ HELMUT ,  RUST KURT

IPC: C08F210/00 ,  C08F210/06 ,  C08F210/16 ,  C08F4/64

Abstract: A polypropylene having a strongly reduced melting temperature and improved optical properties is obtained by copolymerization of propylene with small quantities of ethylene and butene-(1).

公开(公告)号：FI750571A

公开(公告)日：1976-07-31

申请号：FI750571

申请日：1975-02-27

Applicant: HOECHST AG

Inventor： RUST KURT ,  SCHROTT ERWIN ,  STRAMETZ HELMUT ,  KABLITZ HANS JUERGEN

IPC: C08F4/00 ,  C08F4/60 ,  C08F4/64 ,  C08F10/00 ,  C08F

Abstract: A catalyst of high activity and stereospecificity in alpha -olefin polymerization is obtained when titanium trichloride, prepared from titanium tetrachloride by reduction with an aluminum alkyl halide, is thermally treated, first with an ether in the presence of a cyclopolyene and the solid reaction product is then treated with an aluminum alkyl halide in the presence of a small amount of a cyclopolyene and/or an olefin. With the catalyst obtained high space-time yields of alpha -olefin polymers and copolymers can be produced.