公开(公告)号：CA2112954A1

公开(公告)日：1994-07-08

申请号：CA2112954

申请日：1994-01-06

Applicant: HOECHST AG

Inventor： BOEHM LUDWIG ,  HERRMANN HANS-FRIEDRICH ,  BERTHOLD JOACHIM ,  HOHNER GERD ,  LECHT RAINER ,  VETTER HANS J

IPC: C08F4/654 ,  C08F4/60 ,  C08F4/626 ,  C08F4/634 ,  C08F4/635 ,  C08F10/00 ,  C08F110/00

Abstract: Process for producing low molecular-weight poly-1-olefins A catalyst formed by the reaction of a magnesium alkoxide dispersion having a particle size of from 100 to 3000 nm with a compound of a metal selected from the group comprising titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminum compound possesses a very good hydrogen responsiveness and a high activity even in the presence of molecular-weight regulators such as hydrogen. The catalyst is therefore outstandingly suitable for the production of low molecularweight polyolefins. The catalyst makes possible the production of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder produced by suspension polymerization with this catalyst enables easy removal of the suspension medium and drying. The catalyst is furthermore advantageously used in solution polymerization and, because of the large particle diameter, in gas phase polymerization for producing low molecularweight poly-1-olefins.

公开(公告)号：CA1207498A

公开(公告)日：1986-07-08

申请号：CA405526

申请日：1982-06-18

Applicant: HOECHST AG

Inventor： BERTHOLD JOACHIM ,  DIEDRICH BERND ,  FRANKE RAINER ,  HARTLAPP JUERGEN ,  SCHAEFER WERNER ,  STROBEL WOLFGANG

IPC: C08F4/00 ,  C08F4/10 ,  C08F4/16 ,  C08F4/44 ,  C08F4/60 ,  C08F4/64 ,  C08F4/654 ,  C08F10/00 ,  C08F4/66 ,  C08F2/00

Abstract: of the disclosure: Polyolefins having a broad molecular weight distribution are obtained in a very high yield even using, as the catalyst, a product from the reaction of a magnesium alcoholate with titanium tetrachloride, if the reaction between the magnesium alcoholate and the titanium tetrachloride is carried out at a relatively low temperature and the reaction mixture is then heated to a fairly high temperature in order to split of alkyl chlorides.

公开(公告)号：CA1206699A

公开(公告)日：1986-06-24

申请号：CA405531

申请日：1982-06-18

Applicant: HOECHST AG

Inventor： BERTHOLD JOACHIM ,  DIEDRICH BERND ,  FRANKE RAINER ,  HARTLAPP JUERGEN ,  SCHAEFER WERNER ,  STROBEL WOLFGANG

IPC: C08F4/00 ,  C08F4/10 ,  C08F4/16 ,  C08F4/44 ,  C08F4/60 ,  C08F4/64 ,  C08F4/658 ,  C08F10/00 ,  C08F4/66 ,  C08F2/00

Abstract: of the disclosure: Polyolefins having a broad molecular weight distribution are obtained in a very high yield even using a catalyst based on a reaction product of a magnesium alcoholate with titanium tetrachloride, if the hydrocarboninsoluble product of the reaction of the magnesium alcoholate with titanium tetrachloride is heated to a fairly high temperature with a chloroalkoxytitanate, in order to split off alkyl chlorides.

公开(公告)号：PL313998A1

公开(公告)日：1996-11-12

申请号：PL31399896

申请日：1996-04-26

Applicant: HOECHST AG

Inventor： BERTHOLD JOACHIM ,  BOEHM LUDWIG ,  BREUERS WERNER ,  ENDERLE JOHANNES-FRIEDRICH ,  FLEISSNER MANFRED ,  LECHT RAINER ,  LUEKER HARTMUT ,  SCHULTE ULRICH ,  BROEMSTRUP HEINER

IPC: B29C48/32 ,  C08F8/00 ,  C08F10/02 ,  C08F210/02 ,  C08L23/04 ,  C08L23/06 ,  F16L9/12 ,  F16L9/127

Abstract: High-strength tubing made of ethylene polymer (PE) with a bimodal mol. wt. distribution is claimed. It has stress cracking resistance ≥ 1400 h and fracture toughness ≥ 7 mJ/mm .

公开(公告)号：NO961684A

公开(公告)日：1996-10-29

申请号：NO961684

申请日：1996-04-26

Applicant: HOECHST AG

Inventor： BERTHOLD JOACHIM ,  BOHM LUDWIG ,  BREUERS WERNER ,  ENDERLE JOHANNES-FRIEDRICH ,  FLEISSNER MANFRED ,  LECHT TAINER ,  LUKER HARTMUT ,  SCHULTE ULRICH ,  BROMSTRUP HEINER

IPC: C08F8/00 ,  C08F10/02 ,  C08F210/02 ,  C08L23/04 ,  F16L9/12 ,  F16L9/127

CPC classification number: F16L9/127 ,  C08L23/0807 ,  F16L9/12 ,  Y10S138/07 ,  Y10T428/1352 ,  Y10T428/139 ,  Y10T428/1397

公开(公告)号：ZA9400072B

公开(公告)日：1994-08-17

申请号：ZA9400072

申请日：1994-01-06

Applicant: HOECHST AG

Inventor： BOEHM LUDWIG ,  HERRMANN HANS-FRIEDRICH ,  BERTHOLD JOACHIM ,  HOHNER GERD ,  LECHT RAINER ,  VETTER HANS JOACHIM

IPC: C08F4/654 ,  C08F4/60 ,  C08F4/626 ,  C08F4/634 ,  C08F4/635 ,  C08F10/00 ,  C08F110/00 ,  C08F

CPC classification number: C08F10/00 ,  Y10S526/905 ,  C08F4/6155 ,  C08F4/6555

公开(公告)号：CA2112954C

公开(公告)日：2005-03-29

申请号：CA2112954

申请日：1994-01-06

Applicant: HOECHST AG

Inventor： BOHM LUDWIG ,  HERRMANN HANS-FRIEDRICH ,  BERTHOLD JOACHIM ,  HOHNER GERD ,  LECHT RAINER ,  VETTER HANS J

IPC: C08F4/654 ,  C08F4/60 ,  C08F4/626 ,  C08F4/634 ,  C08F4/635 ,  C08F10/00 ,  C08F110/00

Abstract: A catalyst formed by the reaction of a magnesium alkoxide dispersion having a particle size of from 100 to 3000 nm with a compound of a metal selected from the group comprising titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminum compound possesses a very good hydrogen responsiveness and a high activity even in the presence of molecular-weight regulators such as hydrogen. The catalyst is therefore outstandingly suitable for the production of low molecular-weight polyolefins. The catalyst makes possible the production of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder produced by suspension polymerization with this catalyst enables easy removal of the suspension medium and drying. The catalyst is furthermore advantageously used in solution polymerization and, because of the large particle diameter, in gas phase polymerization for producing low molecular-weight poly-1-olefins.

公开(公告)号：IN192915B

公开(公告)日：2004-06-05

申请号：IN1396MA1995

申请日：1995-10-27

Applicant: HOECHST AG

Inventor： BREUERS WERNER ,  BERTHOLD JOACHIM

IPC: C08L23/02

公开(公告)号：BR9602044A

公开(公告)日：1998-01-06

申请号：BR9602044

申请日：1996-04-25

Applicant: HOECHST AG

Inventor： BERTHOLD JOACHIM ,  BROEMSTRUP HEINER ,  BOEHM LUDWIG ,  BREUERS WERNER ,  ENDERLE JOHANNES-FRIEDRICH ,  FLEISSNER MANFRED ,  LECHT RAINER ,  LUEKER HARTMUT DR ,  SCHULTE ULRICH

IPC: B29C48/32 ,  C08F8/00 ,  C08F10/02 ,  C08F210/02 ,  C08L23/04 ,  C08L23/06 ,  F16L9/12 ,  F16L9/127

Abstract: High-strength tubing made of ethylene polymer (PE) with a bimodal mol. wt. distribution is claimed. It has stress cracking resistance ≥ 1400 h and fracture toughness ≥ 7 mJ/mm .

公开(公告)号：AU669239B2

公开(公告)日：1996-05-30

申请号：AU5302694

申请日：1994-01-05

Applicant: HOECHST AG

Inventor： BOHM LUDWIG ,  HERRMANN HANS-FRIEDRICH ,  BERTHOLD JOACHIM ,  HOHNER GERD ,  LECHT RAINER ,  VETTER HANS JOACHIM

IPC: C08F4/654 ,  C08F4/60 ,  C08F4/626 ,  C08F4/634 ,  C08F4/635 ,  C08F10/00 ,  C08F110/00 ,  C08F4/646 ,  C08F4/68 ,  C08F4/69

Abstract: A catalyst formed by reacting a magnesium alkoxide dispersion whose particle size is from 100 to 3000 nm with a compound of a metal from the group consisting of titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminium compound has very good hydrogen sensitivity and high activity even in the presence of molecular weight regulators such as hydrogen. This makes the catalyst highly suitable for the preparation of low-molecular-weight polyolefins. The catalyst enables the preparation of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder prepared by suspension polymerisation using this catalyst enable ready separation and drying of the suspension medium. The catalyst is furthermore advantageous in solution polymerisation and, due to the large particle diameter, can be used in gas-phase polymerisation for the preparation of low-molecular-weight poly-1-olefins.