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公开(公告)号：DE2503689A1
公开(公告)日：1976-08-05
申请号：DE2503689
申请日：1975-01-30
Applicant: HOECHST AG
Inventor： RUST KURT DIPL CHEM DR , STRAMETZ HELMUT DIPL CHEM DR , SCHROTT ERWIN DIPL CHEM DR , KABLITZ HANS-JUERGEN DIPL CHEM
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.
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公开(公告)号：DE2503708A1
公开(公告)日：1976-08-05
申请号：DE2503708
申请日：1975-01-30
Applicant: HOECHST AG
Inventor： RUST KURT DIPL CHEM DR , STRAMETZ HELMUT DIPL CHEM DR , SCHROTT ERWIN DIPL CHEM DR , KABLITZ HANS-JUERGEN DIPL CHEM
Abstract: Catalyst is prepd. by reacting TiCl4 with an organo -Al cpd. contg. a dialkyl Al chloride in an inert hydrocarbon solvent, heat-treating the reaction prod. contg. TiCl3, opt. in the presence of an ehter, sepg. and washing the reaction prod. (component A) and mixing it with a dialkyl -AL halide (component B) and opt. with a cyclopolyene as stereo-regulator (component C). (A) is prepd. by adding the organo -Al cpd. at 20 degrees C to +20 degrees C to the TiCl4 in a mol. ratio of dialkyl Al chloride: TiCl4 of 0. 8:1-1.5:1, the resulting solid prod. being heat-treated at 40-150 degrees C, and then heat-treated again in the presence of a dialkyl ether, and sepd. As alpha-olefin polyms. catalyst, esp. for propylene, and as catalyst for the sequenched copolymsn. of alpha-olefins with each other and/or with ethylene, the polymsns. being effected opt. continuously, in suspension or the gas phase at 1-50 kg/cm2 press./20-120 degrees C. The catalyst has high activity and good stereo specificity (which itself depends on the polymsn. temp.).
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公开(公告)号：DE2849114A1
公开(公告)日：1980-05-29
申请号：DE2849114
申请日：1978-11-11
Applicant: HOECHST AG
Inventor： DORRER BERNHARD DIPL CHEM DR , KLOOS FRIEDRICH DIPL PHYS DR , STRAMETZ HELMUT DIPL CHEM DR , NEUMANN HORST DIPL CHEM
IPC: C08L23/00 , C08L7/00 , C08L21/00 , C08L23/06 , C08L23/12 , C08L23/16 , C08L101/00 , C08L23/08 , C08L23/14
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.
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公开(公告)号：DE2503718A1
公开(公告)日：1976-10-07
申请号：DE2503718
申请日：1975-01-30
Applicant: HOECHST AG
Inventor： RUST KURT DIPL CHEM DR , STRAMETZ HELMUT DIPL CHEM DR , SCHROTT ERWIN DIPL CHEM DR , KABLITZ HANS-JUERGEN DIPL CHEM
Abstract: Catalyst is prepd. by reacting TiCl4 with an organo -Al cpd. contg. a dialkyl Al chloride in an inert hydrocarbon solvent, heat-treating the reaction prod. contg. TiCl3, opt. in the presence of an ehter, sepg. and washing the reaction prod. (component A) and mixing it with a dialkyl -AL halide (component B) and opt. with a cyclopolyene as stereo-regulator (component C). (A) is prepd. by adding the organo -Al cpd. at 20 degrees C to +20 degrees C to the TiCl4 in a mol. ratio of dialkyl Al chloride: TiCl4 of 0. 8:1-1.5:1, the resulting solid prod. being heat-treated at 40-150 degrees C, and then heat-treated again in the presence of a dialkyl ether, and sepd. As alpha-olefin polyms. catalyst, esp. for propylene, and as catalyst for the sequenched copolymsn. of alpha-olefins with each other and/or with ethylene, the polymsns. being effected opt. continuously, in suspension or the gas phase at 1-50 kg/cm2 press./20-120 degrees C. The catalyst has high activity and good stereo specificity (which itself depends on the polymsn. temp.).
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Patent Agency Ranking
公开(公告)号：DE2409726A1
公开(公告)日：1975-09-11
申请号：DE2409726
申请日：1974-03-01
Applicant: HOECHST AG
Inventor： RUST KURT DIPL CHEM DR , SCHROTT ERWIN DIPL CHEM DR , STRAMETZ HELMUT DIPL CHEM DR , WALTER DIETER DIPL CHEM DR
Abstract: In the prodn. of a (Ziegler-Natta type) catalyst, component A is prepd. by reacting TiCl4 with an organo-Al cpd. (I) cntg. R2AlCl (in which R is alkyl) in an inert hydrocarbon solvent (II), sepg. and washing and thermal after-treatment of the reaction prod. (III) suspended in (II) in the presence of an ether, then component A is mixed with R2AlX (in which X is halogen) (component B) and opt. with a cyclopolyene as stereoregulator (component C). To produce component A, (I) is added to TiCl4 at a temp. of -20 to +20, pref. 0 to 5 degrees C in an R2AlCl/TiCl4 molar ratio of 0.8-1.5:1, pref. 0.9-1.1:1 and the suspension of the solid washed (III), treated thermally in the presence of dialkyl ether (IV), is subjected to after-treatment with an alkyl Al halide (V). Used for the polymerisation of alpha-olefins of the formula CH2CHR' (in which R' is 1-8, esp. 1 C alkyl) or their copolymerisation with C2H4, esp. to statistical copolymers with max. 5 wt. % C2H4 or block copolymers with max. 25 wt.% C2H4. Catalyst prodn. costs are reduced by saving 1-3 washing stages, which also reduces plant and material costs and almost eliminates processing of waste liquor contg.
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公开(公告)号：DE2828764A1
公开(公告)日：1980-01-10
申请号：DE2828764
申请日：1978-06-30
Applicant: HOECHST AG
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公开(公告)号：DE2503688A1
公开(公告)日：1976-08-05
申请号：DE2503688
申请日：1975-01-30
Applicant: HOECHST AG
Inventor： RUST KURT DIPL CHEM DR , STRAMETZ HELMUT DIPL CHEM DR , SCHROTT ERWIN DIPL CHEM DR , KABLITZ HANS-JUERGEN DIPL CHEM
Abstract: A catalyst of high activity and stereospecificity in alpha -olefin polymerization is obtained when titanium trichloride, prepared by reduction with aluminum alkyl halides, is treated first with an ether and then, without separation of the ether, with an aluminum alkyl halide in the presence of a small amount of a cyclopolyene and/or an olefin.
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公开(公告)号：DE2417093A1
公开(公告)日：1975-11-06
申请号：DE2417093
申请日：1974-04-08
Applicant: HOECHST AG
Inventor： STRAMETZ HELMUT DIPL CHEM DR , LEUERING HANS-JOACHIM DIPL CHE , RUST KURT DIPL CHEM DR , ENGELMANN MANFRED DIPL CHEM DR
IPC: C08L23/00 , C08F2/00 , C08F2/14 , C08F297/00 , C08F297/08 , C08L7/00 , C08L21/00 , C08L23/06 , C08L23/08 , C08L23/10 , C08L23/12 , C08L23/16 , C08L101/00 , C08F210/16
Abstract: 1508033 Polyolefin compositions HOECHST AG 7 April 1975 [8 April 1974] 14080/75 Headings C3P and C3M Moulding compositions comprising (1) 70 to 90 weight per cent of crystalline polypropylene, (2) 2 to 10 weight per cent of an ethylene/propylene copolymer and (3) 8 to 25 weight per cent of polyethylene wherein the melt flow index of the composition is less than that of the polypropylene component and greater by a factor of 1À3 to 7À0 than that of polypropylene prepared by means of the same catalyst as the moulding composition and having the same reduced specific viscosity, may be prepared by (a) preparing polypropylene of melt flow index 5 to 80 g./10 mins. by polymerizing propylene at 0À5 to 40 kg/cm. and 40 to 110 C. in the presence of a stereo specific catalyst and 0- 1 to 20% by volume, based on the propylene, of hydrogen, (b) introducing ethylene at a propylene partial pressure of less than 0À5 kg./ cm. and 40 to 110 C. and (c) preparing polyethylene in a third step at a propylene partial pressure of less than 0À001 kg./cm. and a total pressure of 0À5 to 40 kg./cm. and at 40 to 110 C. in the presence of 1 to 50% by volume of hydrogen. In examples the polymers are prepared by sequential polymerization in the presence of catalysts comprising titanium trichloride and diethyl aluminium chloride.
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公开(公告)号：DE2413261A1
公开(公告)日：1975-09-25
申请号：DE2413261
申请日：1974-03-20
Applicant: HOECHST AG
Inventor： RUST KURT , SCHROTT ERWIN DIPL CHEM DR , STRAMETZ HELMUT DIPL CHEM DR
Abstract: 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.
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