Plural Chalcogens Bonded Directly To The Metal (e.g., Alkyl Titanates, Titanic Esters, Etc.) Patents (Class 556/54)
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Patent number: 6093824Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a bis(hydroxy aromatic nitrogen ligand) transition metal catalyst precursor and an activating cocatalyst.Type: GrantFiled: February 25, 1998Date of Patent: July 25, 2000Assignee: Univation Technologies, LLCInventors: Walter Thomas Reichle, Frederick John Karol
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Patent number: 6077965Abstract: In metal complexes of the formula I ##STR1## the substituents have the following meanings: M is a metal of transition group III, IV, V or VI of the Periodic Table of the Elements or a metal of the lanthanide series,Y is a negative leaving atom or a negative leaving group,X and X.sup.1 are negatively charged or uncharged atoms of main group IV, V or VI of the Periodic Table of the Elements,Z is hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.10 -cycloalkyl, C.sub.1 -C.sub.10 -alkoxy, C.sub.1 -C.sub.10 -alkylthio or dialkylamido having from 1 to 4 carbon atoms in each alkyl radical,R.sup.1 to R.sup.11 are hydrogen, carboorganic or organosilicon radicals,n is 0, 1 or 2 andthe valence of M is 2+n.Type: GrantFiled: April 14, 1999Date of Patent: June 20, 2000Assignee: BASF AktiengesellschaftInventors: Michael Geprags, Rainer Sturmer, Horst Weiss, Susanne Steiger
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Patent number: 6025503Abstract: Disclosed is a process for producing novel optically active titanium alkoxide complexes which are excellent in catalytic activity and enantio-selectivity in carbon-carbon bond forming reactions (for example, Ene reaction, hetero-Diels-Alder reaction, Aldol reaction) and have high stability. The present process comprises reacting (R),(S),(RS)-catalysts or mixtures thereof selected from among optically active or racemic titanium alkoxide complexes represented by the following general formula (1), etc.: ##STR1## wherein R.sup.1 represents a methyl, lower alkoxy or trihalogeno group; R.sup.2 represents a hydrogen or halogen atom; R.sup.3 represents a hydrogen atom or a methyl group; and R.sup.4 represents a lower alkyl group, or R.sup.1 and R.sup.2 may form together a cyclo ring;with chiral activators [(R),(S),(RS)-diols or mixtures thereof, but excluding reactions between a racemic modification and another racemic modification] to thereby activate exclusively one of the enantiomers.Type: GrantFiled: December 31, 1997Date of Patent: February 15, 2000Assignee: Takasago International CorporationInventors: Koichi Mikami, Satoru Matsukawa
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Patent number: 6013819Abstract: Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including ElPE resins and pseudo-random copolymers, are disclosed and claimed.Type: GrantFiled: August 26, 1996Date of Patent: January 11, 2000Assignee: The Dow Chemical CompanyInventors: James C. Stevens, Robert K. Rosen
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Patent number: 6002031Abstract: Metal alkoxyalkoxidecarboxylates wherein the alkoxy portion has 2-6 carbon atoms and the alkoxide portion has 2-6 carbon atoms are provided and are useful in forming films on a substrate.Type: GrantFiled: September 4, 1998Date of Patent: December 14, 1999Assignee: International Business Machines CorporationInventors: Peter Richard Duncombe, Deborah Ann Neumayer
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Patent number: 5929264Abstract: The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 are preferably halogen, to give the corresponding indanones, which are converted into the compounds IV and IVa by reduction and dehydration. The compounds IV and IVa are important intermediate products for the preparation of chiral metallocene complexes which are suitable catalyst components for olefin polymerization.Type: GrantFiled: July 10, 1997Date of Patent: July 27, 1999Assignee: Targor GmbHInventors: Jurgen Rohrmann, Frank Kuber
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Patent number: 5917072Abstract: A description follows of catalysts of the metallocene type which can be used in the (co)polymerization of alpha-olefins, particularly in the preparation of elastomeric copolymers of ethylene.Type: GrantFiled: December 6, 1996Date of Patent: June 29, 1999Assignee: Enichem S.p.A.Inventors: Viviano Banzi, Paolo Biagini, Roberto Santi, Giampiero Borsotti, Gabriele Lugli
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Patent number: 5914417Abstract: The present invention relates to novel organometallic compounds of the general formula M(OH).sub.y (A).sub.V (B).sub.z, wherein M is Ti(IV), Nb(V) or Ta(V) and x +y+z=5 for Nb and Ta and x+y+z=4 for Ti and A means an alkoxide ligand of diols and/or glycol monoethers and B is a carboxylate ligand of fatty acids of a carbon chain length of C.sub.6 -C.sub.19, and to processes for the production and use thereof.Type: GrantFiled: June 3, 1997Date of Patent: June 22, 1999Assignee: H.C. Starck GmbH & Co. KGInventors: Karlheinz Reichert, Wolfgang Simon, Harald Troger, Gisbert Ebeling
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Patent number: 5912373Abstract: The conversion of the achiral meso form of an ansa-metallocene complex into the chiral rac form is carried out photochemically in the presence of a chiral auxiliary reagent.Type: GrantFiled: December 17, 1997Date of Patent: June 15, 1999Assignee: BASF AktiengesellschaftInventors: David Fischer, Franz Langhauser, Jurgen Kerth, Gunther Schweier, Hans-Herbert Brintzinger, Katrin Schmidt
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Patent number: 5908497Abstract: Organo-metal oxide chelates stable in aqueous compositions are provided by the reaction of metal alkoxide--where the metal is titanium, zinc, tungsten, or tin--and a polyalkylene glycol. Specific compounds are the reaction product of tetra alkyl titanates with diethylene glycol. Aqueous coating compositions containing the chelates may be applied to fiber glass at the filament stage or after forming into mats. When heat treated, the coated fiber glass serves as photocatalytic media.Type: GrantFiled: December 19, 1997Date of Patent: June 1, 1999Assignee: PPG Industries Ohio, Inc.Inventors: Anastasia Morfesis, Robert G. Swisher
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Patent number: 5906955Abstract: A catalyst for polymerization of an olefin, which comprises (a) a transition metal compound of the following formula (1), (2) and/or (3): ##STR1## wherein each of M.sup.1, M.sup.2 and M.sup.3 is a titanium atom, a zirconium atom or a hafnium atom, each of Cp.sup.1, Cp.sup.2, Cp.sup.3, Cp.sup.4 and Cp.sup.5 is a cyclopentadienyl group, an indenyl group, a fluorenyl group or a substitution product thereof, R.sup.1 is a hydrogen atom, a C.sub.1-20 hydrocarbon group or a C.sub.1-20 alkylsilyl group, each of X.sup.1, X.sup.2, X.sup.3, X.sup.4, X.sup.5 and X.sup.6 is a hydrogen atom or a C.sub.1-20 hydrocarbon group, Z.sup.1 is a C.sub.1-20 hydrocarbon group, a silicon-containing C.sub.1-20 hydrocarbon group or a C.sub.1-20 alkylsilanediyl group, which serves to connect Cp.sup.3 and Cp.sup.4, Z.sup.2 is a C.sub.1-20 hydrocarbon group, a silicon-containing C.sub.1-20 hydrocarbon group or a C.sub.1-20 alkylsilanediyl group, which serves to connect Cp.sup.Type: GrantFiled: December 16, 1997Date of Patent: May 25, 1999Assignee: Tosoh CorporationInventors: Satoshi Hamura, Hisami Yasuda, Toru Yoshida, Morihiko Sato
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Patent number: 5892080Abstract: Solid mesoporous crystalline composition of diphospho-nate-phosphite of a tetravalent metal, with a limited distribution of mesopores having the formulaM?(O.sub.3 P--R--PO.sub.3).sub.1-x-y (HPO.sub.3).sub.2x (O.sub.3 P--R--PO.sub.3 H.sub.2).sub.2y !wherein: M is a tetravalent metal, R is a bivalent organic radical, x varies from 0.3 to 0.6, y varies from 0.05 to 0.3. The process for its production is described, together with its uses and a solid catalyst containing --SO.sub.3 H acid groups, active in the conversion processes of hydrocarbons, which can be obtained from said mesoporous crystalline composition by treatment with a sulfonicphosphonic or arylphosphonic acid, followed, only in the case of treatment with arylphosphonic acid, by sulfonation with a sulfonating agent.Type: GrantFiled: October 2, 1997Date of Patent: April 6, 1999Assignee: Eniricerche S.p.A.Inventors: Giulio Alberti, Riccardo Vivani, Chiara Antonini Vitali, Piergiorgio Zapelli
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Patent number: 5892078Abstract: The present invention relates to a stereorigid metallocene compound which has as ligands at least two substituted or unsubstituted cyclopentadienyl groups which are connected to one another via a five-membered ring, where at least one cyclopentadienyl group is fuzed to the five-membered ring and the ligand system of the stereorigid metallocene compound is different from 4-?(.eta..sup.5 -3'-alkyl-cyclopentadienyl)-4,6,6-trimethyl-(.eta..sup.5 -2-alkyl-4,5-tetrahydropentalene)!. The metallocene compound of the invention is suitable as a catalyst component for olefin polymerization.Type: GrantFiled: October 14, 1997Date of Patent: April 6, 1999Assignee: Targor GmbHInventors: Markus res, Frank ber, Berthold Schiemenz
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Patent number: 5892075Abstract: The object of the invention resides in the development of an improved process for synthesizing metallocene compounds useful as olefin polymerization catalysts.A new process for synthesizing metallocene compounds of formulae (IV) and (IV') comprises a reaction of formula (I) with formula (II) or (II') to afford formula (III) or (III'), and then a reaction of a halogenating agent.In formulae (IV) and (IV') described below, M.sup.1 is a group IV transition-metal atom, L.sup.1 and L.sup.2 can be each other identical or different and are substituted or unsubstituted cyclopentadienyl, substituted or unsubstituted indenyl or substituted or unsubstituted fluorenyl groups, B is a hydrocarbon having 1-20 carbon atoms, silylene having 1-20 carbon atoms, oligosilylene or germylene groups, binding to L.sup.1 and L.sup.2, Y can be identical or different and is each independently of one another a halogen atom. Further, M.sup.1 can be coordinated with an ether or an amine at any coordination number.Type: GrantFiled: September 23, 1997Date of Patent: April 6, 1999Assignee: Kanto Kagaku Kabushiki KaishaInventors: Kunihiko Murata, Junichi Hori, Masahiro Yoshida
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Patent number: 5883277Abstract: Metallocene complexes having a cationic bridge of the formula ##STR1## where the substituents have the following meanings: M is a metal of transition group III, IV, V or VI of the Periodic Table of the Elements or a metal of the lanthanide group,X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or --OR.sup.5,R.sup.1 to R.sup.12, Y, Z and n having the meanings set out in the specification, said complexes can be prepared via ligand systems of the formula II ##STR2## as intermediates.Type: GrantFiled: August 14, 1997Date of Patent: March 16, 1999Assignee: BASF AktiengesellschaftInventors: David Fischer, Franz Langhauser, Gunther Schweier, Hans-Herbert Brintzinger, Nadine Leyser
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Patent number: 5869721Abstract: A novel trivalent Group IVB metal complex for preparing syndiotactic vinyl aromatic polymers is disclosed which is coordinated by a bidentate ligand and is represented by the formula (I):(C.sub.5 R.sub.n H.sub.5-n)M(BD).sub.m Y.sub.p (I)wherein C.sub.5 R.sub.n H.sub.5-n is a substituted or unsubstituted cyclopentadienyl group, n is an integer between 0 and 5, and R is C.sub.1 to C.sub.12 alkyl, aryl, substituted alkyl, or substituted aryl; M is a trivalent Group IVB metal; (BD) is a bidentate ligand with -1 valence, having a coordinating group which is capable of forming a coordinating bond or a chelating bond with the metal M; Y is selected from the group consisting of alkyl, aryl, aralkyl, halogen and hydrogen; m is an integer of 1 or 2; and m+p=2.Type: GrantFiled: June 23, 1997Date of Patent: February 9, 1999Assignee: Industrial Technology Research InstituteInventors: Yi-Chun Chen, Jing C. Tsai, W. P. Chao
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Patent number: 5854363Abstract: An (omega-alkenyl) (cyclopentacarbyl) metallocene compound is provided. Polymerization processes therewith are also provided.Type: GrantFiled: November 24, 1997Date of Patent: December 29, 1998Assignee: Phillips Petroleum CompanyInventors: Michael Jung, Helmut G. Alt, M. Bruce Welch
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Patent number: 5852142Abstract: The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 are preferably halogen, to give the corresponding indanones, which are converted into the compounds IV and IVa by reduction and dehydration. The compounds IV and IVa are important intermediate products for the preparation of chiral metallocene complexes which are suitable catalyst components for olefin polymerization.Type: GrantFiled: June 5, 1995Date of Patent: December 22, 1998Assignee: Targor GmbHInventors: Jurgen Rohrmann, Frank Kuber
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Patent number: 5840950Abstract: In a process for converting the achiral meso form or the racemate of an ansa-metallocene complex or a mixture thereof into one of its enantiomers, the conversion is carried out photochemically in the presence of an enantiomerically pure auxiliary reagent.Type: GrantFiled: January 8, 1998Date of Patent: November 24, 1998Assignee: BASF AktiengesellschaftInventors: David Fischer, Franz Langhauser, Rainer Sturmer, Jurgen Kerth, Gunther Schweier, Hans-Herbert Brintzinger, Katrin Schmidt
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Patent number: 5840948Abstract: The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 are preferably halogen, to give the corresponding indanones, which are converted into the compounds IV and IVa by reduction and dehydration. The compounds IV and IVa are important intermediate products for the preparation of chiral metallocene complexes which are suitable catalyst components for olefin polymerization.Type: GrantFiled: June 5, 1995Date of Patent: November 24, 1998Assignee: Targor GmbHInventors: Jurgen Rohrmann, Frank Kuber
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Patent number: 5840646Abstract: An olefin polymerization catalyst component is represented by the general formula (1); ##STR1## wherein M is titanium, zirconium or hafnium; each of A and A' is the same or different and is a hydrocarbon or halogenated hydrocarbon having 1 to 50 carbon atoms, or a hydrocarbon or halogenated hydrocarbon group having 1 to 50 carbon atoms and a substituent containing an oxygen atom; E is a residual group of an element of the 13th to 15th Groups capable of forming three bonds; each of R and R' is the same or different and is a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms; R" represents a hydrocarbon or halogenated hydrocarbon group containing at least one hetero atom and having 1 to 20 carbon atoms. This component is used in a catalyst to produce an olefin polymer.Type: GrantFiled: August 9, 1996Date of Patent: November 24, 1998Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroaki Katayama, Masaaki Nabika, Akio Iami, Norio Kawamura, Hidenori Hanaoka
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Patent number: 5773637Abstract: A process is disclosed for preparing a perfluoroalkyl sulfonate of the formula R.sub.a MX.sub.b-c O.sub.g ?(SO.sub.3).sub.d (R.sub.f).sub.e !.sub.c. This process involves reacting a reagent of the fonnula R.sub.a MX.sub.b O.sub.g and a second reagent of the formula R'.sub.x E?(SO.sub.3).sub.d (R.sub.f).sub.e !.sub.y,whereR is selected from the group consisting of C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 perfluoroalkyl, cyclopentadienyl (i.e., C.sub.5 H.sub.5), phenyl and perfluorophenyl;M is selected from the group consisting of transistion metals of groups 3 to 12, main group elements of group 13 to 16 and lanthanide metals;X is selected from the group consisting of F, Cl and Br;R.sub.f is selected from the group consisting of C.sub.h F.sub.2h+1, C.sub.h F.sub.2h, wherein h is an integer from 0 to 10, perfluorophenyl, C.sub.6 F.sub.4 (CF.sub.2).sub.2 i, wherein i is an integer from 0 to 6, provided that when E is boron, R.sub.f is selected from the group consisting of C.sub.h' F.sub.Type: GrantFiled: September 6, 1996Date of Patent: June 30, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Walter Vladimir Cicha, Andreas Josef Kornath, Ronald James McKinney, V. N. Mallikarjuna Rao, Joseph Stuart Thrasher, Alfred Waterfeld
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Patent number: 5767302Abstract: Two types of high-purity Ti complexes, ?TiO(DPM: dipivaloylmethane).sub.2 !.sub.2 and cis-Ti(O-t-Bu).sub.2 (DPM).sub.2, and BST film-forming liquid compositions comprising solutions of either of the two types of high-purity Ti complexes and Ba(DPM).sub.2 and/or Sr(DPM).sub.2 in organic solvents can be used to form BST films. Crystals of the former complex are produced by adding purified water to a solution of TiCl.sub.2 (DPM).sub.2 in an organic solution, adding an alkali chemical to the solution to adjust the pH to 6.0-8.0 to thereby produce turbidity, and separating the organic layer which is then washed with water and heated to reflux. Crystals of the latter complex is produced by adding HDPM to a solution of Ti(O-t-Bu).sub.4 in an organic solvent, and heating the solution to reflux.Type: GrantFiled: July 31, 1996Date of Patent: June 16, 1998Assignee: Mitsubishi Materials CorporationInventors: Katsumi Ogi, Hiroto Uchida, Atsushi Itsuki, Kazuo Wakabayashi
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Patent number: 5767295Abstract: The invention provides an efficient process for producing a 2-substituted optically active 2,3-dihydro-4H-pyran-4-one comprising subjecting an aldehyde, which is not bulky and cannot be expected an electronic interaction with a catalyst, such as acetaldehyde, and a Danishefsky diene to a highly enantio-selective asymmetric hetero Diels-Alder reaction in the presence of an asymmetric catalyst readily obtainable from inexpensive starting materials.Type: GrantFiled: July 8, 1996Date of Patent: June 16, 1998Assignee: Kaneka CorporationInventors: Masura Mitsuda, Junzo Hasegawa
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Patent number: 5756791Abstract: The invention relates to a process for the adsorption of chelated organometallic compounds, in which the said compounds are placed in contact with alumina-based beads produced by forming by agglomeration of an alumina powder using a rotational technique and exhibiting a volume of pores of diameter greater than 100 .ANG. of at least 0.10 cm.sup.3 /g, a volume of pores of diameter greater than 1 .mu.m of at least 0.05 cm.sup.3 /g and a diameter of not more than 4 mm. It also relates to alumina beads including a chelated organometallic compound.Type: GrantFiled: April 10, 1996Date of Patent: May 26, 1998Assignee: Rhone-Poulenc ChimieInventors: Christophe Nedez, Bernard Taxil
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Patent number: 5714624Abstract: A novel oxotitanium complex represented by general formula (I) is disclosed: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a phenyl group, a substituted phenyl group, a trialkylsilyl group, a monoalkyldiphenylsilyl group, a dialkylmonophenylsilyl group, a triphenylsilyl group, a substituted triphenylsilyl group, or a lower alkoxycarbonyl group, provided that R.sup.1 and R.sup.2 may be bonded to each other to form a hydrocarbon ring or a substituted hydrocarbon ring in cooperation with the carbon atoms to which R.sup.1 and R.sup.2 are bonded; R.sup.3 and R.sup.4 may be the same or different and each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a benzoyl group, a benzenesulfonyl group, or a halogen atom, provided that R.sup.3 and R.sup.Type: GrantFiled: December 30, 1996Date of Patent: February 3, 1998Assignee: Takasago International CorporationInventors: Takeshi Nakai, Dai Kitamoto, Noboru Sayo
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Patent number: 5710086Abstract: Reaction mixtures prepared from tetraalkyl titanates and mixtures of glycols, said reaction mixtures comprising titanium bisglycoxide oligomers, may be used as depolymerization catalysts for conversion of linear polyesters to macrocyclic polyester oligomers.Type: GrantFiled: March 20, 1996Date of Patent: January 20, 1998Assignee: General Electric CompanyInventors: Daniel Joseph Brunelle, Tohru Takekoshi, Judith Ann Serth-Guzzo
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Patent number: 5710297Abstract: The present invention relates to a stereorigid metallocene compound containing, as ligands, at least two substituted or unsubstituted cyclopentadienyl groups which are bonded to one another via a monocyclic or polycyclic ring system, where at least one cyclopentadienyl group is fused to the monocyclic or polycyclic ring system, and to a process for the preparation of a cycloolefin copolymer. The cycloolefin copolymers obtained in this way have high tear strengths and are suitable for the production of extrusion parts and injection moldings.Type: GrantFiled: September 13, 1996Date of Patent: January 20, 1998Assignee: Hoechst AktiengesellschaftInventors: Thomas Weller, Michael Aulbach, Frank Kuber, Gerhard Erker, Christian Psiorz, Bernd Bachmann, Frank Osan
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Patent number: 5696045Abstract: Polyolefins with a molecular weight distribution M.sub.w /M.sub.n .gtoreq.3.0, which may be monomodal, bimodal or multimodal, can be obtained by polymerization or copolymerization of olefins with a catalyst system consisting of an aluminoxane and a transition metal component (metallocene), in which the transition metal component consists of at least one zirconocene of the formula I and at least one zirconocene of the formula Ia ##STR1## or alternatively of at least 2 zirconocenes of the formula I.Type: GrantFiled: June 24, 1996Date of Patent: December 9, 1997Inventors: Andreas Winter, Walter Spaleck, Bernd Bachmann
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Patent number: 5688979Abstract: An organometallic zirconium precursor, represented by following formula:L.sub.x .multidot.Zr(THD).sub.4 ?I!wherein L is an electron donor ligand selected from the group consisting of NR.sub.3 (R.dbd.H, CH.sub.3) gas and Cl.sub.2 gas; THD denotes 2,2',6,6'-tetramethyl-3,5-heptanedione; and x is in the range of 0.3 to 1.5 with the proviso that L is NR.sub.3 or in the range of 0.5 to 2 with the proviso that L is Cl.sub.2, is prepared by flowing a gas phase electron donor into a bubbler containing bis (2,2',6,6'-tetramethyl-3,5-heptanedione)Zr at a predetermined temperature, to synthesize, in-situ, an adduct. The precursor exhibits a remarkable improvement in volatility, and in stability at the vaporization point.Lead-zirconium-titanium thin films prepared from the precursor, display superior reproducibility and reliability.Type: GrantFiled: October 10, 1996Date of Patent: November 18, 1997Assignee: Samsung Electronics Co., Ltd.Inventors: Wan-in Lee, Jun-ki Lee
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Patent number: 5681974Abstract: Mo adsorbent for .sup.99 Mo-.sup.99m Tc generators has a skeleton structure having mainly repeating units represented by the general formula; ##STR1## wherein X is a halogen atom or alkoxide group having one to six carbon atoms, 10% or more of X is halogen, R is an alkylene, polymethylene, or carbon chain having unsaturated bond, repeating unit (D) is bonded to any one of repeating units (A), (B), and (C), the branch structure is controlled by the content of repeating units (A), (B), and (C), the adsorbent is insoluble in water and adsorbs selectively only Mo from an aqueous solution containing Mo, and elutes .sup.99m Tc generated from a radioactive isotope .sup.99 Mo. This Mo adsorbent uses .sup.99 Mo obtained from natural Mo by (n, .gamma.) method, therefore, a generator having the same size as conventional .sup.99m Tc generators is realized.Type: GrantFiled: May 20, 1996Date of Patent: October 28, 1997Assignees: Kaken Co., Ltd., Japan Atomic Energy Research InstituteInventors: Yoshio Hasegawa, Mizuka Nishino, Taketoshi Takeuchi, Katsuyoshi Tatenuma, Masakazu Tanase, Kiyoyuki Kurosawa
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Patent number: 5659054Abstract: Bridged monocyclopentadienyl derivatives of a Group 4 metal are prepared by contacting a corresponding bis(cyclopentadienyl) metal complex with an alkali metal derivative or alkaline earth metal derivative of a hydrocarbyl ligand R, which is optionally substituted with one or more amino, phosphino, ether, thioether, or silyl groups. The bis(cyclopentadienyl) Group 4 metal complexes can be prepared by contacting a compound corresponding to one of the formulas (Cp).sub.3 MQ.sub.n X.sub.t, (Cp).sub.2 MQ.sub.n X.sub.t+1, or CpMQ.sub.n X.sub.t+2 and a dianionic salt compound corresponding to the formula: (L.sup.+x).sub.y (Cp*-Z-Y).sup.-2 or ((LX').sup.+x).sub.y (Cp*-Z-Y).sup.-2. An addition polymerization catalyst comprising a bis(cyclopentadienyl) Group 4 metal complex and an activating cocatalyst, and an addition polymerization process using such a catalyst.Type: GrantFiled: June 6, 1995Date of Patent: August 19, 1997Assignee: The Dow Chemical CompanyInventor: David R. Wilson
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Patent number: 5654456Abstract: A first metal, an alcohol, and a carboxylic acid are reacted to form a metal alkoxycarboxylate which is then reacted with an alkoxide and/or a carboxylate of a second metal to form a precursor. Alternatively, a metal carboxylate and a metal alkoxide are combined and heated to form a precursor. In either alternative, the precursor includes all or most of the metal-oxygen-metal bonds of a desired metal oxide and a carboxylate ligand. The precursor is applied to a substrate, dried and annealed to form the metal oxide, such as BST. The metal-oxygen-metal bonds in the precursor permit the desired metal oxide to be formed from the precursor in one step, providing excellent thin films suitable for integrated circuits. The carboxylate ligand provides stability to the precursor allowing it to be stored for periods common in large scale manufacturing.Type: GrantFiled: June 7, 1995Date of Patent: August 5, 1997Assignee: Symetrix CorporationInventors: Michael C. Scott, Carlos A. Paz de Araujo, Larry D. McMillan
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Patent number: 5646322Abstract: The invention relates to an indenyl compound of the general formulaR'Ind--M--(Cp)Q.sub.kin which the symbols have the following meanings:Ind: an indenyl groupR': a substituent, other than hydrogen, to the Ind group,Cp: a cyclopentadienyl groupM: a transition metal from group 3, 4, 5 or 6 of the Periodic System of ElementsQ: a ligand to Mand k is an integer linked to the valence of M.The invention is characterized in that the R' group is bound to the Ind group at the 2-position. The indenyl compound is a catalyst component for the polymerization of olefins.The invention also relates to polymers obtainable with such indenyl compounds.Type: GrantFiled: May 11, 1995Date of Patent: July 8, 1997Assignee: DSM N.V.Inventors: Johannus A. M. van Beek, Johannes G. de Vries, Henricus J. Arts, Radjindrakumar Persad, Gerardus H. J. van Doremaele
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Patent number: 5625086Abstract: The invention relates to a process for the preparation of cyclopentadienyltrialkoxy derivatives of the general formulaLTi(OR).sub.3by reaction of cyclopentadienyltrialkoxy trihalide with alcohol in an inert solvent, which is characterized in that the reaction is performed in the presence of alkoxide.Type: GrantFiled: June 26, 1996Date of Patent: April 29, 1997Assignee: Witco GmbHInventor: Richard Lisowsky
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Patent number: 5621126Abstract: Described are certain mono(cyclopentadienyl) Group IV B metal compounds, catalyst systems comprising such mono(cyclopentadienyl) metal compounds and an activator, and to a process using such catalyst systems for the production of polyolefins, particularly ethylene-.alpha.-olefin copolymers having a high molecular weight and high level of .alpha.-olefin incorporation.Type: GrantFiled: October 15, 1993Date of Patent: April 15, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Jo Ann M. Canich, Howard W. Turner, Gregory G. Hlatky
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Patent number: 5616748Abstract: A process for preparing titanium or zirconium hydrocarbyloxide complexes in a reduced oxidation state comprising contacting the corresponding complex in an elevated oxidation state with lithium alkyl reducing agent and recovering the resulting product.Type: GrantFiled: April 25, 1995Date of Patent: April 1, 1997Assignee: The Dow Chemical CompanyInventor: Thomas H. Newman
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Patent number: 5616751Abstract: A novel oxotitanium complex represented by general formula (I) is disclosed: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a phenyl group, a substituted phenyl group, a trialkylsilyl group, a monoalkyldiphenylsilyl group, a dialkylmonophenylsilyl group, a triphenylsilyl group, a substituted triphenylsilyl group, or a lower alkoxycarbonyl group, provided that R.sup.1 and R.sup.2 may be bonded to each other to form a hydrocarbon ring or a substituted hydrocarbon ring in cooperation with the carbon atoms to which R.sup.1 and R.sup.2 are bonded; R.sup.3 and R.sup.4 may be the same or different and each represents a hydrogen atom, a lower alkyl group, a lower alkoxy group, a benzoyl group, a benzenesulfonyl group, or a halogen atom, provided that R.sup.3 and R.sup.Type: GrantFiled: March 10, 1995Date of Patent: April 1, 1997Assignee: Takasago International CorporationInventors: Takeshi Nakai, Dai Kitamoto, Noboru Sayo
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Patent number: 5614650Abstract: Novel zirconium compounds of sulfonic acids are disclosed which have the following general formula:[R(SO.sub.3).sub.x ].sub.y [R'(SO.sub.3).sub.x' ].sub.y' Zr[(O.sub.3 S).sub.x" R"].sub.y" [(O.sub.3 S).sub.x"' R'"].sub.y'"where R, R', R", R'" are independently substituted or unsubstituted, alkyl, alkylene, aryl or alkaryl radicals and x, x', x", x"', y, y', y" and y"' are sufficient in value to supply 4 sulfonate groups to the molecule, and the use of such zirconium compounds as catalysts in organic chemical reactions.Type: GrantFiled: March 7, 1995Date of Patent: March 25, 1997Inventors: Stanley R. Sandler, Michael D. Gernon, Jacques Ragot
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Patent number: 5599963Abstract: The invention relates to catalysts for the synthesis of .beta.-hydroxy carbonyl compounds, and in particular to enantioselective catalysts.Type: GrantFiled: March 29, 1995Date of Patent: February 4, 1997Assignee: California Institute of TechnologyInventors: Erick M. Carreira, Robert A. Singer
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Process for the preparation of syndiotactic polyolefins having a broad molecular weight distribution
Patent number: 5587501Abstract: Syndiotactic polyolefins having a molecular weight distribution M.sub.w /M.sub.n of >3 and which may be monomodal, bimodal or multimodal are obtained by polymerization or copolymerization of olefins of the formula RCH.dbd.CHR, in which a catalyst system comprising an aluminoxane and a transition-metal component (metallocene) is used, the transition-metal component comprising at least 2 metallocenes of the formula ##STR1## which are stereorigid and whose moiety formed by Zr and the substituents R.sup.1 -R.sup.4 has C.sub.s symmetry or slightly distorted C.sub.s symmetry.Type: GrantFiled: June 7, 1995Date of Patent: December 24, 1996Assignee: Hoechst AktiengesellschaftInventors: Andreas Winter, Volker Dolle, Walter Spaleck -
Patent number: 5554775Abstract: Disclosed is a catalyst having the general formula ##STR1## where Q is a ligand containing the ring ##STR2## R is hydrogen, N(R').sub.2, OR', or R', each R' is independently selected from alkyl from C.sub.1 to C.sub.10, aryl from C.sub.6 to C.sub.15, alkaryl C.sub.7 to C.sub.15, and aralkyl from C.sub.7 to C.sub.15, each X is independently selected from hydrogen, halogen, alkoxy from C.sub.1 to C.sub.10, dialkylamino from C.sub.1 to C.sub.10, methyl, ##STR3## each R.sub.1 is independently selected from halogen, alkoxy from C.sub.1 to C.sub.10, and R', L is ##STR4## Q, or X, where L can be bridged to Q, B is an optional base, "n" is 0 to 5, and M is titanium, zirconium, or hafnium.Type: GrantFiled: January 17, 1995Date of Patent: September 10, 1996Assignee: Occidental Chemical CorporationInventors: Ramesh Krishnamurti, Sandor Nagy, Bradley P. Etherton
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Patent number: 5541350Abstract: Disclosed is a mono- or di-amido silyldiyl bridged composition of matter useful as a catalyst component for the homo or copolymerization of olefins.Type: GrantFiled: August 16, 1995Date of Patent: July 30, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Masahide Murata, Terry J. Burkhardt
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Patent number: 5539124Abstract: Disclosed is an azametallocene polymerization catalyst having the general formula ##STR1## where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, Cp is a ligand containing a cyclopentadienyl group, B is a Lewis acid, Y is a halogen, alkoxy from C.sub.1 to C.sub.20, siloxy from C.sub.1 to C.sub.20, or mixtures thereof, M is titanium, zirconium, or mixtures thereof, m is 1 to 4, and n is 0 to 2, p is 0 to 2, q is 0 to 1, and m+n+q=4. The catalyst is useful in polymerizing unsaturated olefinic monomers such as ethylene.Type: GrantFiled: December 19, 1994Date of Patent: July 23, 1996Assignee: Occidental Chemical CorporationInventors: Bradley P. Etherton, Sandor Nagy
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Patent number: 5504224Abstract: Bridged monocyclopentadienyl derivatives of a Group 4 metal are prepared by contacting a corresponding bis(cyclopentadienyl) metal complex with an alkali metal derivative or alkaline earth metal derivative of a hydrocarbyl ligand R, which is optionally substituted with one or more amino, phosphino, ether, thioether, or silyl groups. The bis(cyclopentadienyl) Group 4 metal complexes can be prepared by contacting a compound corresponding to one of the formulas (Cp).sub.3 MQ.sub.n X.sub.t, (Cp).sub.2 MQ.sub.n X.sub.t+1, or CpMQ.sub.n X.sub.t+2 and a dianionic salt compound corresponding to the formula: (L.sup.+x).sub.y (Cp*-Z-Y).sup.-2 or ((LX').sup.+x).sub.y (Cp*-Z-Y).sup.-2. An addition polymerization catalyst comprising a bis(cyclopentadienyl) Group 4 metal complex and an activating cocatalyst, and an addition polymerization process using such a catalyst.Type: GrantFiled: March 14, 1994Date of Patent: April 2, 1996Assignee: The Dow Chemical CompanyInventor: David R. Wilson
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Patent number: 5504223Abstract: A process for preparing bridged mono- and bis(cyclopentadienyl) metal dihydrocarbyloxy coordination complexes (I) by contacting in the presence of an aprotic organic diluent a metal compound of the formula M(OR).sub.4 with a dianionic salt compound. A process for preparing bridged mono- and bis(cyclopentadienyl)dihydrocarbyl metal coordination complexes (II) by contacting a complex (I) with a hydrocarbylation agent. A process for preparing bridged mono- and bis(cyclopentadienyl) metal dihalide coordination complexes (III) by contacting a complex (I) with a halogenation agent.Type: GrantFiled: January 25, 1994Date of Patent: April 2, 1996Assignee: The Dow Chemical CompanyInventors: Robert K. Rosen, Brian W. S. Kolthammer
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Patent number: 5496854Abstract: The invention relates to novel titanocene derivatives possessing chemotherapeutic activity and method for their preparation. These compounds possess two cyclopentadiene rings linked to titanium as a central atom and bound covalently to two phenoxy groups which possess a substituent R selected from the group consisting of COOCH.sub.3, COOC.sub.2 H.sub.5, H, COOCH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 OCH.sub.3 and are free from amino, nitro, chloride and fluoride groups. The novel compounds represent a compromise between the main properties for an antitumor agent, i.e., electrophilicity and stability, being water soluble. Cytotoxicity measurements of these compounds showed significant growth inhibition properties, expressed in terms of IC.sub.50 [M] values.Type: GrantFiled: February 17, 1995Date of Patent: March 5, 1996Assignees: Technion Research & Development Foundation Ltd., Ehud KeinanInventor: Ehud Keinan
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Patent number: 5474762Abstract: A sunscreen composition for application to human skin comprises an ultraviolet absorber which is introduced as an anion into a layered double hydroxide of the general formula[N.sub.m N.sub.n (OH).sub.2(m+n) ].sup.y+ X.sup.x-.sub.y/x .multidot.zH.sub.2 Owhere M is a divalent metal or lithium, N is a trivalent metal and X denotes anions present as an interlayer between layers of metal atoms joined through the OH groups.Such layered double hydroxides are, for this invention, suspended in a cosmetically acceptable vehicle.Type: GrantFiled: August 16, 1993Date of Patent: December 12, 1995Assignee: Chesebrough-Pond's USA Co. Division of Conopco, Inc.Inventors: Stuart W. Carr, Kevin R. Franklin, Charles C. Nunn, Jeffrey J. Pasternak, Ian R. Scott
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Patent number: 5416228Abstract: This invention is for a metallocene catalyst component useful in preparing isotactic polyolefins, a catalyst system using this component and a process for polymerizing olefins using the catalyst component. The catalyst component consists of a bridged metallocene in which one of the cyclopentadienyl rings is substituted in a different manner from the other ring. One of the cyclopentadienyl ligands contains a bulky group in one and only one distal position and the other cyclopentadienyl ligand has bilateral or pseudobilateral symmetry. There is a steric difference between the two Cp rings.The catalyst component is a stereorigid metallocene described by the formula:R" (CpR.sub.n)(CpR'.sub.m)MeQ.sub.kwherein each Cp is a cyclopentadienyl or substituted cyclopentadienyl ring; each R.sub.n and R'.sub.Type: GrantFiled: October 7, 1991Date of Patent: May 16, 1995Assignee: Fina Technology, Inc.Inventors: John A. Ewen, Michael J. Elder
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Patent number: 5412128Abstract: The catalyst for olefin polymerization of the present invention contains R.sub.k.sup.1 R.sub.l.sup.2 R.sub.m.sup.3 M(SO.sub.3 R.sup.4) (M=Zr, Ti or Hf; R.sup.1-3 =a group having a cyclopentadienyl skeleton) as a catalyst component of a transition metal compound. According to the catalyst of the invention, an olefin polymer having excellent particle properties can be prepared with high polymerization activities, and further a copolymer having a narrow composition distribution can be prepared when two or more monomers are copolymerized. Of the above-mentioned transition metal compounds, a compound represented by the following formula is a novel compound unknown so far and shows excellent catalytic properties. ##STR1## (Cp=a group having a cyclopentadienyl skeleton, X=SO.sub.3 R, a halogen atom, R, OR, NR.sub.n, S(O).sub.q R, SiR.sub.3 or P (O).sub.q R.sub.Type: GrantFiled: July 9, 1993Date of Patent: May 2, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Junichi Imuta, Junji Saito, Takashi Ueda, Teruaki Mukaiyama