公开(公告)号：AU669943B2

公开(公告)日：1996-06-27

申请号：AU5236793

申请日：1993-12-13

Applicant: HOECHST AG

Inventor： HESS REINER ,  VOIGT HARTMUT ,  HERRMANN HANS-FRIEDRICH ,  BOHM LUDWIG

IPC: C08F4/649 ,  B01J19/00 ,  B01J19/18 ,  C08F2/00 ,  C08F2/14 ,  C08F2/18 ,  C08F4/60 ,  C08F4/62 ,  C08F4/622 ,  C08F4/626 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  C08F110/06 ,  C08F210/16 ,  C10G73/02 ,  C08F4/69 ,  C08F4/68 ,  C08F4/64 ,  C08F4/642

Abstract: Polymerisation of olefins in a low-boiling suspension medium, in particular propane, and dissipation of the heat of reaction by evaporative cooling in the presence of a metallocene catalyst gives polyolefin waxes without wall deposits being able to impair the cooling of the reactor.

公开(公告)号：AU630451B2

公开(公告)日：1992-10-29

申请号：AU5577190

申请日：1990-05-23

Applicant: HOECHST AG

Inventor： SPALECK WALTER ,  ANTBERG MARTIN ,  BOHM LUDWIG ,  ROHRMANN JURGEN ,  LUKER HARTMUT

IPC: C07F17/00 ,  C08F4/58 ,  C08F4/60 ,  C08F4/602 ,  C08F4/62 ,  C08F4/626 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/642 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F4/68

公开(公告)号：PT97833A

公开(公告)日：1992-02-28

申请号：PT9783391

申请日：1991-05-31

Applicant: HOECHST AG

Inventor： BOHM LUDWIG

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

Abstract: Poly-1-olefins, in particular polyethylene, are produced using a Ziegler catalyst whose transition metal constituents are produced by reacting a transition metal compound of titanium, zirconium, vanadium or chromium with a gel-like dispersion of a magnesium, alcoholate. An organoaluminium compound is used as co-catalyst. The polymerizates are obtained in high to very high yields and the particle size distribution of the polymerizates can be controlled.

公开(公告)号：CA2017190A1

公开(公告)日：1990-11-20

申请号：CA2017190

申请日：1990-05-18

Applicant: HOECHST AG

Inventor： SPALECK WALTER ,  ANTBERG MARTIN ,  BOHM LUDWIG ,  ROHRMANN JURGEN ,  LUKER HARTMUT

IPC: C07F17/00 ,  C08F4/58 ,  C08F4/60 ,  C08F4/602 ,  C08F4/62 ,  C08F4/626 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/642 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16

Abstract: Process for the preparation of ethylene polymers The preparation of polyethylene and ethylene-1-olefin copolymers in the suspension or gas phase process with the aid of metallocene/aluminoxane catalysts whose metallocene component is a bridged biscyclopentadienyl complex offers particular advantages. Depending on the structure of the complex, the use of these complexes gives, with high activity, products in a very broad molecular-weight range and permits the production of very varied grain morphologies of the products, such as high and low bulk density, extremely small and extremely large mean grain diameters and various grain shapes. The variety of grain morphologies which can be achieved opens up various possibilities for the use of such polyethylene powders in sintering processes.

公开(公告)号：CA1247297A

公开(公告)日：1988-12-20

申请号：CA485961

申请日：1985-06-28

Applicant: HOECHST AG

Inventor： BOHM LUDWIG

IPC: C07F5/06 ,  C08F4/00 ,  C08F4/42 ,  C08F4/60 ,  C08F4/62 ,  C08F4/64 ,  C08F4/642 ,  C08F4/658 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02

Abstract: In the case of catalysts used for the polymerization of olefins and containing aluminoxanes as activators, it is possible to simplify the preparation of the aluminoxane if an aluminum trialkyl is reacted with a solid containing water.

公开(公告)号：IN184792B

公开(公告)日：2000-09-30

申请号：IN958MA1994

申请日：1994-10-04

Applicant: HOECHST AG

Inventor： BREUERS WERNER ,  BOHM LUDWIG ,  LECHT RAINER

IPC: C08F4/64 ,  C08F10/00

公开(公告)号：IN183888B

公开(公告)日：2000-05-06

申请号：IN70MA1994

申请日：1994-02-07

Applicant: HOECHST AG

Inventor： BREUERS WERNER ,  LECHT RAINER ,  BOHM LUDWIG

IPC: C08F10/00

公开(公告)号：IN183030B

公开(公告)日：1999-08-21

申请号：IN407MA1992

申请日：1992-07-03

Applicant: HOECHST AG

Inventor： HEINRICH ANDREAS ,  BOHM LUDWIG ,  SCHOLZ HANS-ALBRECHT

IPC: C08F10/00

公开(公告)号：SG52625A1

公开(公告)日：1998-09-28

申请号：SG1996006995

申请日：1992-08-06

Applicant: HOECHST AG

Inventor： HEINRICH ANDREAS ,  BOHM LUDWIG ,  SCHOLZ HANS ALGRECHT

IPC: C08F4/658 ,  C08F4/60 ,  C08F4/646 ,  C08F4/655 ,  C08F4/656 ,  C08F4/657 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02

Abstract: For the homopolymerization of ethylene or for the copolymerization of ethylene with other 1-olefins, a catalyst is used which comprises a trialkylaluminum compound and the entire product from the reaction of a magnesium alkoxide which is dissolved, suspended or dispersed as a gel in an inert solvent, with a tetravalent transition-metal compound and an organoaluminum compound, washing with an inert solvent and reacting with a halogenated metal compound. A polymer having coarse particles and a high bulk density is obtained.

公开(公告)号：NO961684L

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: 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 .