-
公开(公告)号：DE19529240A1
公开(公告)日：1997-02-13
申请号：DE19529240
申请日：1995-08-09
Applicant: BASF AG
Inventor： HUEFFER STEFAN DR , KERTH JUERGEN DR , KOELLE PETER DR , MUELLER PATRIK DR , HEMMERICH RAINER DR
Abstract: Ziegler/Natta-type catalyst systems (A), comprising: (a) a solid component contg. a Ti cpd., a Mg cpd., a halogen, a silica gel support (B) and a carboxylate ester as electron donor; (b) an Al cpd. as cocatalyst; and opt. (c) another electron donor. The silica (B) has an average particle dia. of 5-200 mu m and an average prim. particle dia. of 1-10 mu m, and contains cavities or channels with an average dia. of 1-10 mu m and a macroscopic vol. content of 5-20% based on the whole particle. Also claimed are: (i) a process for the prodn. of (A) by reacting (a), (b) and opt. (c) together at 0-150[deg]C and 1-100 bar; (ii) a process for the prodn. of polymers by polymerisation of propylene and opt. comonomers at 20-150[deg]C and 1-100 bar in presence of (A); (iii) polymers of propylene obtd. by this process; and (iv) film, fibres and mouldings made from these polymers.
-
公开(公告)号：AT97670T
公开(公告)日：1993-12-15
申请号：AT89117452
申请日：1989-09-21
Applicant: BASF AG
Inventor： FUNK GUIDO DR , WEBER SIEGFRIED DR , KERTH JUERGEN DR , HEMMERICH RAINER DR
-
公开(公告)号：DE4132894A1
公开(公告)日：1993-04-08
申请号：DE4132894
申请日：1991-10-04
Applicant: BASF AG
Inventor： FUNK GUIDO DR , HEMMERICH RAINER DR , GROPPER HANS DR , KOLK ERICH DR , FOLLMER GODOFREDO DR
Abstract: In a new process for the preparation of a supported catalyst for the polymerisation of alpha -olefins, first a support gel (1) is prepared by introducing a sodium water glass or potassium water glass solution into a swirling stream of an aqueous mineral acid optionally containing aluminium ions longitudinally and tangentially to the stream, spraying the resultant silicic acid hydrosol in drop form into a gaseous medium, and allowing it to solidify to form a hydrogel, and freeing the resultant hydrogel, without prior ageing, from salts by washing and optionally from some of the water by extraction with alcohols and/or ketones, and then drying the hydrogel. This gives the support gel (1), which is ground and fractionated according to particle size. In a second process step, the support gel (1) is charged with chromium trioxide or with a chromium compound which can be converted into chromium trioxide, after which the resultant chromium-containing support gel (2) is heated at from 400 to 1100 DEG C for from 10 to 1000 minutes in an anhydrous gas stream containing oxygen in a concentration greater than 10% by volume. It is essential for the process according to the invention that the drying of the hydrogel to form the support gel (1) takes place in a high-speed drier within a maximum time of 300 seconds at an inlet temperature of from 200 to 600 DEG C. The supported catalyst prepared in this way gives homopolymers and copolymers of ethylene having excellent low-temperature toughness.
-
公开(公告)号：DE3864106D1
公开(公告)日：1991-09-12
申请号：DE3864106
申请日：1988-09-03
Applicant: BASF AG
Inventor： ZOLK RALF DR , KERTH JUERGEN DR , HEMMERICH RAINER DR
Abstract: Homopolymers of propylene and copolymers of propylene with minor amts. of other 2-12C alpha-monolefins are made by polymerisation of the monomer(s) at 20-160 deg.C and a press. of 1-100 bar using a Ziegler-Natta catalyst system comprising (1) a Ti component based on a finely divided silica gel carrier and contg. Ti, Mg, Cl and a benzenecarboxylic acid deriv., (2) an Al component of formula AlR3 in which R=1-8C alkyl and (3) a silane component of formula R1nSi(OR2)4-n in which R1=a satd. aliphatic or aromatic hydrocarbon residue with not more than 16C, R2=1-15C alkyl and n=0-3, with an atomic ratio of T in (1):Al in (2)=1:10 to 1:800 and a mol. ratio Al component (2):silane component (3)=1:0.01-1.08.
-
公开(公告)号：DE3829285A1
公开(公告)日：1990-03-15
申请号：DE3829285
申请日：1988-08-30
Applicant: BASF AG
Inventor： KOELLE PETER DR , KERTH JUERGEN DR , ZOLK RALF DR , HEMMERICH RAINER DR
-
Patent Agency Ranking
公开(公告)号：DE3640802A1
公开(公告)日：1988-06-09
申请号：DE3640802
申请日：1986-11-28
Applicant: BASF AG
Inventor： HEMMERICH RAINER DR , MUELLER-MALL RUDOLF DR , SCHWEIER GUENTHER DR , GROPPER HANS DR
-
公开(公告)号：DE59600133D1
公开(公告)日：1998-05-07
申请号：DE59600133
申请日：1996-08-01
Applicant: BASF AG
-
公开(公告)号：DE59500435D1
公开(公告)日：1997-09-04
申请号：DE59500435
申请日：1995-05-30
Applicant: BASF AG
Inventor： KOELLE PETER DR , MUELLER PATRIK DR , HEMMERICH RAINER DR , KOLK ERICH DR
Abstract: Processing Ziegler-Natta (S-N) catalyst systems contg. (a) a Ti-contg. solid component contg. electron donor(s), in the form of a suspension in inert solvent, and as co-catalyst; (b) an Al cpd.; and (c) opt. other electron donor cpds. comprises removing the solvent from suspension (a) by (1) filtering the suspension and then (2) removing more solvent by applying a pressure difference at not above 100 degrees C. Also claimed are the obtd. catalyst systems.
-
公开(公告)号：DE59206219D1
公开(公告)日：1996-06-13
申请号：DE59206219
申请日：1992-08-20
Applicant: BASF AG
Inventor： KERTH JUERGEN DR , HEMMERICH RAINER DR , KOELLE PETER DR , MUELLER PATRIK DR
-
公开(公告)号：DE4419845A1
公开(公告)日：1995-12-14
申请号：DE4419845
申请日：1994-06-07
Applicant: BASF AG
Inventor： KOELLE PETER DR , MUELLER PATRIK DR , HEMMERICH RAINER DR
Abstract: Processing Ziegler-Natta (S-N) catalyst systems contg. (a) a Ti-contg. solid component contg. electron donor(s), in the form of a suspension in inert solvent, and as co-catalyst; (b) an Al cpd.; and (c) opt. other electron donor cpds. comprises removing the solvent from suspension (a) by (1) filtering the suspension and then (2) removing more solvent by applying a pressure difference at not above 100 degrees C. Also claimed are the obtd. catalyst systems.
-
-
-
-
-
-
-
-
-
Search Results
50
records
(took 0.022 seconds)
