Patents by Inventor Toshihiko Sugano
Toshihiko Sugano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6252097Abstract: The present invention relates to a catalyst for polymerization of &agr;-olefin, which comprises: an essential component (A) of a transition metal compound, an essential component (B) of an ion exchangeable layer compound except for silicate, or an inorganic silicate, and an optional component (C) of an organoaluminum compound, said component (A) being represented by the general formula (I):Type: GrantFiled: May 20, 1999Date of Patent: June 26, 2001Assignee: Mitsubishi Chemical CorporationInventors: Toshihiko Sugano, Naoshi Iwama, Eiji Isobe, Toru Suzuki, Yasuo Maruyama, Satoshi Hayakawa, Hisashi Shoda, Masami Kashimoto, Taku Kato, Takayuki Aoshima, Sugio Nishimura, Yoshinori Suga, Stefan Sieber
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Patent number: 6218558Abstract: Disclosed are a novel transition metal compound represented by the following general formula (I), a catalyst component for olefin polymerization comprising same, a catalyst for olefin polymerization comprising said catalyst component, and a process for the preparation of an &agr;-olefin polymer: where the definition of formula (I) is described in the specification.Type: GrantFiled: June 8, 1999Date of Patent: April 17, 2001Assignee: Japan Polychem CorporationInventors: Taku Kato, Sugio Nishimura, Toshihiko Sugano
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Patent number: 6143911Abstract: A catalyst useful for the polymerization of olefins, comprising the following components (A) and (B):Component (A): A transition metallic compound having the following formula [I]: ##STR1## wherein M: a transition metal selected from Ti, Zr and Hf; R.sup.1 : a monovalent C.sub.1-6 hydrocarbyl group, or a monovalent C.sub.1-6 hydrocarbyl group containing Si;R.sup.2 : a divalent C.sub.4-20 hydrocarbyl group, or a divalent C.sub.4-20 hydrocarbyl group containing Si;R.sup.3 : a divalent C.sub.1-30 hydrocarbyl group, or a divalent C.sub.1-30 hydrocarbyl group containing Si or Ge; andX and Y: H, halogen, a monovalent C.sub.1-20 hydrocarbyl group, or a monovalent C.sub.1-20 hydrocarbyl group containing N, O or Si.Component (B): Alumoxane having the following formula [II] or [III]: ##STR2## wherein m: 4 to 30; and R.sup.4 : a monovalent hydrocarbyl group. A highly stereoregular polyolefin having a high molecular weight can be obtained by the above catalyst.Type: GrantFiled: July 11, 1996Date of Patent: November 7, 2000Assignee: Mitsubishi Petrochemical Company LimitedInventors: Takashi Fujita, Toshihiko Sugano, Hideshi Uchino
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Patent number: 6084043Abstract: A catalyst component for the polymerization of alpha-olefins, represented by the following formula [I]: ##STR1## wherein R.sup.1 -R.sup.3 =H, a halogen, a C.sub.1-10 hydrocarbon radical, a Si-containing C.sub.1-18 hydrocarbon radical, or a halogen-containing C.sub.1-10, hydrocarbon radical (provided that R.sup.1 and R.sup.2 cannot be hydrogen at the same time); n=2 to 7; Q=a C.sub.1-20 hydrocarbon radical, a silylene or oligosilylene group having or not having a C.sub.1-20 hydrocarbon radical, a germylene group having or not having a C.sub.1-20 hydrocarbon radical; X and Y=H, a halogen, a C.sub.1-20 hydrocarbon radical, or an O- or N-containing C.sub.1-20 hydrocarbon radical; and M=a transition metal selected from the groups IVB-VIB; a catalyst for the polymerization of alpha-olefins, comprising the catalyst component; and a process for producing alpha-olefin polymers, where use is made of the catalyst.Type: GrantFiled: November 20, 1997Date of Patent: July 4, 2000Assignee: Mitsubishi Chemical CorporationInventors: Toshihiko Sugano, Hideshi Uchino, Kaori Imaeda, Eiji Taniyama, Naoshi Iwama
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Patent number: 6080827Abstract: An ethylene polymer, which is an ethylene homopolymer or a copolymer of ethylene and an .alpha.-olefin having 3 to 20 carbon atoms, having the following properties:(1) the melt index (MI) at a temperature of 190.degree. C. under a load of 21.6 kg is in the range of 0.1 to 100 g/10 min;(2) the density is in the range of 0.935 to 0.975 g/cm.sup.3 ; and(3) the characteristic value of biaxial extensional flow, .lambda.MAX (.lambda.MAX herein is an index of the extension ratio at which the nominal stress is maximum, provided that the extension ratio is in the range of 1 to 3, experimentally obtainable by a biaxial extensional flow test carried out at 190.degree. C. at a constant strain rate d.epsilon./dt of 0.05 s.sup.-1), is at least 1.6.Type: GrantFiled: June 26, 1997Date of Patent: June 27, 2000Assignee: Mitsubishi Chemical CorporationInventors: Kiyotoshi Fujioka, Toshiyuki Tajiri, Eiji Isobe, Kazuhisa Tachi, Toshihiko Sugano
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Patent number: 5942459Abstract: The object of the present invention is to provide a polyolefin having a good particle property in a high yield without use of an expensive alumoxane. The present invention comprises a catalyst for olefin polymerization comprising the following ingredients (A), (B) and (C), and a process for preparing an olefin polymer with use of the catalyst:Component (A): a transition metal compound having at least one conjugated five-membered ring ligand, the transition metal being in the Groups IV-VI of the Periodic Table,Component (B): an organoaluminum compound, andComponent (C): a finely divided particle composition comprising 0.1-99.9% by weight of boric acid.Type: GrantFiled: February 20, 1996Date of Patent: August 24, 1999Assignee: Mitsubishi Chemical CorporationInventors: Toshihiko Sugano, Kazuhiro Yamamoto
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Patent number: 5648440Abstract: Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: ##STR1## wherein R.sup.1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R.sup.2 s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms, or which is a reaction product of the following sub-components (i) and (ii):sub-component (i) which is a compound having the formulaR.sup.1 --B--(OH).sub.2in which R.sup.1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms; andsub-component (ii) which is an organoaluminum compound.Type: GrantFiled: March 1, 1995Date of Patent: July 15, 1997Assignee: Mitsubishi Chemical CorporationInventors: Toshihiko Sugano, Tomohiko Takahama
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Patent number: 5623022Abstract: A propylene block copolymer having a high impact resistance is prepared without the generation of finely divided particles or the adhesion to the reactor, which propylene block copolymer having a weight ratio of 5/95-70/30 (process (1)/process (2)) is obtained by carrying out the particular polymerization processes (1) and (2) in this sequence under the action of the catalyst comprising the following A and B.A: particular transition metal compound.B: an alumoxane, the reaction product of an alkylboronic acid with an organoAl, a Lewis acid or ionic compound.Process (1): process for copolymerizing propylene and a specified comonomer in a ratio of 0/100-80/20.Process (2): process for producing a propylene polymer having a specified comonomer in an amount of 10% by weight or less.Type: GrantFiled: July 13, 1995Date of Patent: April 22, 1997Assignee: Mitsubishi Chemical CorporationInventors: Toshihiko Sugano, Takao Tayano
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Patent number: 5594081Abstract: The present invention provides a catalyst for polymerizing an .alpha.-olefin which is capable of producing an .alpha.-olefin polymer having a high molecular weight in a high yield under the polymerization conditions including at high temperature, and a process for preparing an .alpha.-olefin polymer, which catalyst comprises a Component (A) which comprises a coordination compound having a skeleton of a metallocene compound comprising an indenyl ring or a hydroindenyl ring which is an indenyl having a six-membered portion hydrogenated as a ligand and having Ti, Zr or Hf as a metal component in combination with a Component (B) which is, for example, an alumoxane. The coordination compound is crosslinked at the six-membered rings characterized by the fact that two of the indenyl or hydroindenyl groups are crosslinked at the six-membered ring of the indenyl or hydroindenyl group.Type: GrantFiled: July 20, 1995Date of Patent: January 14, 1997Assignee: Mitsubishi Chemical CorporationInventors: Hideshi Uchino, June Endo, Toshihiko Sugano, Tomohiko Takahama, Taku Kato, Eiji Taniyama, Naoshi Iwama
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Patent number: 5561093Abstract: A catalyst useful for the polymerization of olefins, comprising the following components (A) and (B):Component (A):A transition metallic compound having the following formula [I]: ##STR1## wherein M:a transition metal selected from Ti, Zr and Hf; R.sup.1 :a monovalent C.sub.1-6 hydrocarbyl group, or a monovalent C.sub.1-6 hydrocarbyl group containing Si;R.sup.2 :a divalent C.sub.4-20 hydrocarbyl group, or a divalent C.sub.4-20 hydrocarbyl group containing Si;R.sup.3 :a divalent C.sub.1-30 hydrocarbyl group, or a divalent C.sub.1-30 hydrocarbyl group containing Si or Ge; andX and Y:H, halogen, a monovalent C.sub.1-20 hydrocarbyl group, or a monovalent C.sub.1-20 hydrocarbyl group containing N, O or Si.Component (B):Alumoxane having the following formula [II] or [III]: ##STR2## wherein m:4 to 30; and R.sup.4 :a monovalent hydrocarbyl group. A highly stereoregular polyolefin having a high molecular weight can be obtained by the above catalyst.Type: GrantFiled: May 22, 1995Date of Patent: October 1, 1996Assignee: Mitsubishi Chemical CorporationInventors: Takashi Fujita, Toshihiko Sugano, Hideshi Uchino
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Patent number: 5510502Abstract: A catalyst component for use in the polymerization of .alpha.-olefins, comprising a compound represented by the following general formula I!: ##STR1## wherein R.sup.1 s represent a hydrogen atom, a C.sub.1-6 hydrocarbon group or a C.sub.1-12 hydrocarbon group containing silicon; each of R.sup.2 and R.sup.3 which forms the condensed ring represents a divalent C.sub.3-20 saturated or unsaturated hydrocarbon group, provided that at least one of R.sup.2 and R.sup.3 forms a ring condensed with the cyclopentadiene which is a seven- to twelve-membered ring having an unsaturated bond inherent in R.sup.2 or R.sup.3 ; Q represents a C.sub.1-20 divalent hydrocarbon group, a silylene group, a silylene group with a C.sub.1-20 hydrocarbon group, a germylene group, or a germylene group with a C.sub.1-20 hydrocarbon group; X and Y represent H, a halogen, a C.sub.1-20 hydrocarbon group, or a C.sub.Type: GrantFiled: February 18, 1994Date of Patent: April 23, 1996Assignee: Mitsubishi Chemical CorporationInventors: Toshihiko Sugano, Tomohiko Takahama
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Patent number: 5489659Abstract: A catalyst component for use in the polymerization of .alpha.-olefins, comprising a compound represented by the following general formula [I]: ##STR1## wherein R.sup.1 s represent a hydrogen atom, a C.sub.1-6 hydrocarbon group or a C.sub.1-12 hydrocarbon group containing silicon; each of R.sup.2 and R.sup.3 independently represents a divalent group selected from the group consisting of a hydrocarbon group having 3 to 30 carbon atoms and a silicon-containing hydrocarbon group having 1 to 30 carbon atoms and 1 to 6 silicon atoms, provided that at least one of R.sup.2 and R.sup.3 is said silicon-containing hydrocarbon group; Q represents a C.sub.1-20 divalent hydrocarbon group, a silylene group, a silylene group with a C.sub.1-20 hydrocarbon group, a germylene group, or a germylene group with a C.sub.1-20 hydrocarbon group; X and Y represent H, a halogen, a C.sub.1-20 hydrocarbon group, or a C.sub.Type: GrantFiled: February 18, 1994Date of Patent: February 6, 1996Assignee: Mitsubishi Chemical CorporationInventors: Toshihiko Sugano, Toru Wada, Tomohiko Takahama
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Patent number: 5486572Abstract: A process for preparing propylene block copolymers, comprising a preceding polymerization step in which a crystalline homopolymer of propylene, or a propylene-ethylene copolymer containing 7 wt. % or less of ethylene is produced in the presence of a catalyst comprising the following components (A) and (B), and a succeeding polymerization step in which the polymerization is continued in the presence of at least part of the homopolymer or copolymer, and of the following component (C) further added to give a copolymer with a polymerization ratio (weight ratio) of propylene to ethylene of from 0/100 to 90/10; the polymerization amount at the preceding polymerization step being from 30 to 95 wt.Type: GrantFiled: December 1, 1994Date of Patent: January 23, 1996Assignee: Mitsubishi Chemical CorporationInventors: Takashi Fujita, Toshihiko Sugano
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Patent number: 5468781Abstract: There are provided polypropylene resin expanded particles which have a uniform bubble size, can be molded with an exceptionally low steam pressure, and can produce an expanded molded product having a good surface appearance and an excellent energy absorption property. The present particles are polypropylene resin expanded particles containing as a base resin an isotactic polypropylene resin polymerized in the presence of a metallocene polymerization catalyst.Type: GrantFiled: March 1, 1995Date of Patent: November 21, 1995Assignees: Mitsubishi Petrochemical Company Limited, Mitsubishi Yuka Badische Company LimitedInventors: Toshihiko Sugano, Toshihiro Gotoh
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Patent number: 5449650Abstract: Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: ##STR1## wherein R.sup.1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms, and R.sup.2 s are each a hydrogen atom, a halogen atom, a siloxy group, a lower-alkyl-substituted siloxy group or a hydrocarbon radical having 1 to 10 carbon atoms, or which is a reaction product of the following sub-components (i) and (ii):sub-component (i) which is a compound having the formulaR.sup.1 -B-(OH).sub.2in which R.sup.1 is a hydrocarbon radical having 1 to 10 carbon atoms or a halogen-containing hydrocarbon radical having 1 to 10 carbon atoms; andsub-component (ii) which is an organoaluminum compound.Type: GrantFiled: December 6, 1993Date of Patent: September 12, 1995Assignee: Mitsubishi Petrochemical Company LimitedInventors: Toshihiko Sugano, Tomohiko Takahama
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Patent number: 5444125Abstract: An aminated polymer having excellent adhesion, printability, and compatibility in polymer blends or the like which are obtained by introducing an amino group, into an isotactic .alpha.-olefin polymer having an olefinic unsaturated bond at its terminus is disclosed. The terminal unsaturated isotactic or syndiotactic .alpha.-olefin polymer is obtained by polymerizing an .alpha.-olefin with a catalyst comprising the combination of a metallocene compound and an alumoxane, and the amino group is obtained by the amination of the terminal unsaturated group, by the addition of a compound containing the corresponding functional group to the unsaturated bond, or by the conversion of a precursor polymer containing a precursor of the functional group into a polymer containing the functional group desired.Type: GrantFiled: April 30, 1992Date of Patent: August 22, 1995Assignee: Mitsubishi Petrochemical Company LimitedInventors: Masayuki Tomita, Hideshi Uchino, Toshihiko Sugano, Takashi Fujita, Mitsutoshi Aritomi
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Patent number: 5385877Abstract: A catalyst for .alpha.-olefin polymerization which comprises the following components (A) and (B):component (A), which is a transition metal compound represented by the formulaQ(C.sub.5 H.sub.4-m R.sup.1.sub.m)(C.sub.5 H.sub.4-n R.sup.2.sub.n)MeXYwherein (C.sub.5 H.sub.4-m R.sup.1.sub.m) and (C.sub.5 H.sub.4-n R.sup.2.sub.n) respectively represent a conjugated five-membered ring ligand coordinating to a metal Me; R.sup.1 and R.sup.Type: GrantFiled: February 7, 1992Date of Patent: January 31, 1995Assignee: Mitsubishi Petrochemical Company LimitedInventors: Takashi Fujita, Toshihiko Sugano, Hideshi Uchino
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Patent number: 5346925Abstract: A method for preparing an .alpha.-olefin polymer in which an .alpha.-olefin is polymerized in the presence of a catalyst, characterized in that the catalyst is a solid obtained by making the following components (ii) and (iii) be supported in the component (i):Component (i): an organic porous polymer having an average particle diameter of 5 to 1,000 .mu.m, in which the total pore volume of all pores whose diameter is 0.006 to 10 .mu.m is 0.3 cc/g or more, and the total pore volume of all pores whose diameter is 0.05 to 2 .mu.m is 50% or more of the total pore volume of all pores whose diameter is 0.006 to 10 .mu.m;Component (ii) a compound having the structure ##STR1## in which R is a hydrocarbon group having 1 to 10 carbon atoms; and Component (iii) a compound of a transition metal which belongs to one of the Groups IVB to VIB in the Periodic Table, having at least one conjugated 5-membered cyclic ligand.Type: GrantFiled: November 10, 1993Date of Patent: September 13, 1994Assignee: Mitsubishi Petrochemical Company LimitedInventors: Toshihiko Sugano, Takashi Fujita, Kazuyo Kuwaba
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Patent number: 5331054Abstract: A propylene copolymer composition enabling the production of a film having excellent low-temperature heat sealing ability and blocking resistance, is obtained by blending 1 to 70 wt % of a component A and 30 to 99 wt % of a component B. The component A comprises either a propylene homopolymer or a copolymer of propylene with not more than 10 mol % of ethylene or an a-olefin having a carbon number of 4 to 20, and has a molecular weight distribution (Mw/Mn) of not more than 3, a mean elution temperature of 40.degree. to 100.degree. C., and an elution dispersion degree (.sigma. value) of not more than 10. The component B comprises a copolymer of propylene with ethylene and/or an .alpha.-olefin having a carbon number of 4 to 20, and has a molecular weight distribution (Mw/Mn) of 3.5 to 10.Type: GrantFiled: October 19, 1992Date of Patent: July 19, 1994Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Takashi Fujita, Toshihiko Sugano, Hajime Mizuno, Hideshi Uchino
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Patent number: 5252677Abstract: A functionalized polymer having excellent adhesion, printability, and compatibility in polymer blends or the like which are obtained by introducing an epoxy group, a hydroxyl group or a sulfonic group into a syndiotactic .alpha.-olefin polymer having an olefinic unsaturated bond at its terminus is disclosed. The terminal unsaturated syndiotactic .alpha.-olefin polymer is obtained by polymerizing an .alpha.-olefin with a catalyst comprising the combination of a metallocene compound and an alumoxane, and the functional groups are obtained by the oxidation, sulfonation or the like of the terminal unsaturated group, by the addition of a compound containing the corresponding functional group to the unsaturated bond, or by the conversion of a precursor polymer containing a precursor of the functional group into a polymer containing the functional group desired.Type: GrantFiled: January 4, 1993Date of Patent: October 12, 1993Assignee: Mitsubishi Petrochemical Company LimitedInventors: Masayuki Tomita, Hiroshi Nakano, Hideshi Uchino, Toshihiko Sugano, Mitsutoshi Aritomi