Patents by Inventor Shigekazu Matsui
Shigekazu Matsui 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: 8338557Abstract: Olefin polymer with narrow molecular weight distribution and specific molecular weight, olefin polymer having functional group introduced at terminal, tapered polymer containing segment wherein monomer composition continuously changes in the polymer chain, olefin polymer having different segments bonded to each other, and process for preparing these polymers. The olefin polymers are polymers of C2-20 carbon atom olefins and have a number-average molecular weight of ?500 and Mw/Mn of ?1.5. In syntheses, an olefin of 2-20 carbon atoms is polymerized in the presence of a catalyst comprising a transition metal compound represented by the formula LmMXn wherein M is a transition metal atom of Group 3-11, m is 1-5, n is a number satisfying a valence of M, L is a ligand—coordinated to the central metal M—which contains a heteroatom having no direct bond to the central metal, and X is e.g. halogen or a hydrocarbon.Type: GrantFiled: December 1, 2008Date of Patent: December 25, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Makoto Mitani, Yasunori Yoshida, Junichi Mohri, Kazutaka Tsuru, Seiichi Ishii, Shinichi Kojoh, Tomoaki Matsugi, Junji Saito, Naoto Matsukawa, Shigekazu Matsui, Takashi Nakano, Hidetsugu Tanaka, Norio Kashiwa, Terunori Fujita
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Patent number: 8188191Abstract: The present invention is a polyolefin polymer containing vinyl groups at both ends thereof, and a composition and a molded product containing the polymer, wherein the polymer contains a constitutional unit derived from at least one selected from the group consisting of ethylene (a), an ?-olefin (b) having 3 to 20 carbon atoms, and a cyclic olefin (c), and (1) a ratio of terminal vinylation is 70% or more relative to all of both ends of molecular chains, and (2) an intrinsic viscosity [?] is in the range of 0.01 to 10 dl/g as measured in a decalin solution at 135° C. The polymer of the present invention may be molded by a LIM molding, an injection molding, a transfer molding, a compression molding, and the like, and is excellent in acid resistance, gas permeation resistance, hydrolysis resistance, and dynamic fatigue resistance. From the polymer, a thermoplastic resin composition and a crosslinkable resin composition, and a crosslinked composition having excellent mechanical characteristics are obtained.Type: GrantFiled: August 29, 2007Date of Patent: May 29, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Shigenobu Ikenaga, Keiji Okada, Yoshiki Shimokawatoko, Akihiro Matsuda, Shigekazu Matsui, Masahiro Enna
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Publication number: 20100267908Abstract: [Task] To provide a catalyst for olefin polymerization having an excellent olefin polymerization performance and capable of producing a polyolefin with excellent properties.Type: ApplicationFiled: March 18, 2010Publication date: October 21, 2010Inventors: Kenji Michiue, Mitsuhiko Onda, Shigekazu Matsui, Sadahiko Matsuura, Koji Endo, Makoto Mitani, Terunori Fujita
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Publication number: 20100004393Abstract: The present invention is a polyolefin polymer containing vinyl groups at both ends thereof, and a composition and a molded product containing the polymer, wherein the polymer contains a constitutional unit derived from at least one selected from the group consisting of ethylene (a), an ?-olefin (b) having 3 to 20 carbon atoms, and a cyclic olefin (c), and (1) a ratio of terminal vinylation is 70% or more relative to all of both ends of molecular chains, and (2) an intrinsic viscosity [?] is in the range of 0.01 to 10 dl/g as measured in a decalin solution at 135° C. The polymer of the present invention may be molded by a LIM molding, an injection molding, a transfer molding, a compression molding, and the like, and is excellent in acid resistance, gas permeation resistance, hydrolysis resistance, and dynamic fatigue resistance. From the polymer, a thermoplastic resin composition and a crosslinkable resin composition, and a crosslinked composition having excellent mechanical characteristics are obtained.Type: ApplicationFiled: August 29, 2007Publication date: January 7, 2010Inventors: Shigenobu Ikenaga, Keiji Okada, Yoshiki Shimokawatoko, Akihiro Matsuda, Shigekazu Matsui, Masahiro Enna
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Publication number: 20090234073Abstract: An ?-olefin/non-conjugated cyclic polyene copolymer (A) includes structural units (I) derived from an ?-olefin and structural units (H) derived from a vinyl group-containing cyclic olefin. The copolymer has a molecular weight distribution (Mw/Mn) of not more than 2.7 and is amorphous or low crystalline with a crystalline heat of fusion (?H) of less than 90 kJ/kg. The copolymer is efficiently produced using a specific transition metal catalyst that has a ligand with a phenoxyimine skeleton. The copolymer of the invention has a narrower molecular weight distribution and a higher content of vinyl groups as compared with existing copolymers. The copolymer can then give crosslinked products having excellent tensile properties. The copolymer is also used as a plasticizer for polymers such as rubbers, and provides excellent processability and superior mechanical strength and rubber elasticity of crosslinked products.Type: ApplicationFiled: May 10, 2006Publication date: September 17, 2009Applicant: Mitsui Chemicals, Inc.Inventors: Shigekazu Matsui, Sadahiko Matsuura, Haruyuki Makio, Seiichi Ishii, Hiroshi Terao, Hidetatsu Murakami, Takashi Hakuta, Terunori Fujita
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Patent number: 7566761Abstract: The present invention provides an olefin polymer having a narrow molecular weight distribution and a specific molecular weight, an olefin polymer having a functional group introduced at the terminal, a tapered polymer containing a segment wherein monomer composition continuously changes in the polymer chain, an olefin polymer having different segments which are bonded to each other, and a process for preparing these polymers. The olefin polymers of the invention are polymers of olefins of 2 to 20 carbon atoms and have a number-average molecular weight of not less than 500 and Mw/Mn of not more than 1.5.Type: GrantFiled: September 29, 2004Date of Patent: July 28, 2009Assignee: Mitsui Chemicals, Inc.Inventors: Makoto Mitani, Yasunori Yoshida, Junichi Mohri, Kazutaka Tsuru, Seiichi Ishii, Shinichi Kojoh, Tomoaki Matsugi, Junji Saito, Naoto Matsukawa, Shigekazu Matsui, Takashi Nakano, Hidetsugu Tanaka, Norio Kashiwa, Terunori Fujita
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Publication number: 20090118426Abstract: The present invention provides an olefin polymer having a narrow molecular weight distribution and a specific molecular weight, an olefin polymer having a functional group introduced at the terminal, a tapered polymer containing a segment wherein monomer composition continuously changes in the polymer chain, an olefin polymer having different segments which are bonded to each other, and a process for preparing these polymers. The olefin polymers of the invention are polymers of olefins of 2 to 20 carbon atoms and have a number-average molecular weight of not less than 500 and Mw/Mn of not more than 1.5.Type: ApplicationFiled: December 1, 2008Publication date: May 7, 2009Inventors: Makoto MITANI, Yasunori YOSHIDA, Junichi MOHRI, Kazutaka TSURU, Seiichi ISHII, Shinichi KOJOH, Tomoaki MATSUGI, Junji SAITO, Naoto MATSUKAWA, Shigekazu MATSUI, Takashi NAKANO, Hidetsugu TANAKA, Norio KASHIWA, Terunori FUJITA
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Patent number: 7470865Abstract: A multilayer printed wiring board which permits the formation of fine wiring patterns, thereby increasing the density of wiring patterns. Using photosensitive glass having a coefficient of thermal expansion close to that of a copper film as a core substrate, a through hole is formed in the photosensitive glass by photolithography, a sputtering silicon oxide layer and a sputtering silicon nitride layer are formed to prevent leak of alkali metal ions from the photosensitive glass, a sputtering chromium layer, a sputtering chromium-copper layer and a sputtering copper layer are formed to enhance the adhesion strength between the copper film and the sputtering silicon oxide layer, and a copper film of 1 to 20 ?m thick is formed. With resin filled into the interior of the through hole, a wiring layer is patterned by etching, an insulating layer is formed, and the surface is covered with a surface treatment layer and a cover coat.Type: GrantFiled: May 8, 2006Date of Patent: December 30, 2008Assignee: Hoya CorporationInventors: Takashi Fushie, Takeshi Kagatsume, Shigekazu Matsui
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Patent number: 7312284Abstract: A process for producing a polar olefin copolymer comprises copolymerizing a non-polar olefin and a polar olefin in the presence of a transition metal compound selected from Groups 4, 5, 6 and 11 of the periodic table, which is represented by the following formula (IV): wherein M? is a transition metal atom selected from Groups 4, 5, 6 and 11 of the periodic table, m is an integer of 1 to 6, A is —O—, —Si—, —Se—, —N(R6)—, n is a number satisfying a valence of M?, R1 to R4 and R6 are each a hydrogen atom, a halogen atom, a hydrocarbon group and the like, and X is a halogen atom, an oxygen atom, a hydrocarbon group and the like, and at least one compound (B) selected from the group consisting of an organometallic compound (B-1), an organoaluminum oxy-compound (B-2) and an ionic ionizing compound (B-3). Therefore, the process is capable of obtaining a polar olefin copolymer having excellent properties under mild polymerization conditions.Type: GrantFiled: October 20, 2005Date of Patent: December 25, 2007Assignee: Mitsui Chemicals, Inc.Inventors: Yoshihisa Inoue, Shigekazu Matsui, Yasuhiko Suzuki, Yasunori Yoshida, Yukihiro Takagi, Terunori Fujita, Tomoaki Matsugi, Takashi Nakano
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Patent number: 7300903Abstract: The invention provides a process using olefin polymerization catalysts exhibiting excellent polymerization activities. The olefin polymerization catalysts of the invention contain a transition metal compound typified by formula (I) and at least one of an organometallic compound, an organoaluminum oxy-compound or a compound which reacts with said transition metal compound to form an ion pair.Type: GrantFiled: January 5, 2005Date of Patent: November 27, 2007Assignee: Mitsui Chemicals, Inc.Inventors: Terunori Fujita, Yasushi Tohi, Makoto Mitani, Shigekazu Matsui, Junji Saito, Masatoshi Nitabaru, Kiyoaki Sugi, Haruyuki Makio, Toshiyuki Tsutsui
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Publication number: 20070260026Abstract: [Task] To provide a catalyst for olefin polymerization having an excellent olefin polymerization performance and capable of producing a polyolefin with excellent properties.Type: ApplicationFiled: August 25, 2005Publication date: November 8, 2007Inventors: Kenji Michiue, Mitsuhiko Onda, Shigekazu Matsui, Sadahiko Matsuura, Koji Endo, Makoto Mitani, Terunori Fujita
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Publication number: 20060191710Abstract: A multilayer printed wiring board which permits the formation of fine wiring patterns, thereby increasing the density of wiring patterns. Using photosensitive glass having a coefficient of thermal expansion close to that of a copper film as a core substrate, a through hole is formed in the photosensitive glass by photolithography, a sputtering silicon oxide layer and a sputtering silicon nitride layer are formed to prevent leak of alkali metal ions from the photosensitive glass, a sputtering chromium layer, a sputtering chromium-copper layer and a sputtering copper layer are formed to enhance the adhesion strength between the copper film and the sputtering silicon oxide layer, and a copper film of 1 to 20 ?m thick is formed. With resin filled into the interior of the through hole, a wiring layer is patterned by etching, an insulating layer is formed, and the surface is covered with a surface treatment layer and a cover coat.Type: ApplicationFiled: May 8, 2006Publication date: August 31, 2006Applicant: Hoya CorporationInventors: Takashi Fushie, Takeshi Kagatsume, Shigekazu Matsui
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Patent number: 7053159Abstract: A process for producing a polar olefin copolymer comprises copolymerizing a non-polar olefin and a polar olefin in the presence of a transition metal compound selected from Groups 4, 5, 6 and 11 of the periodic table, which is represented by the following formula (IV): wherein M? is a transition metal atom selected from Groups 4, 5, 6 and 11 of the periodic table, m is an integer of 1 to 6, A is —O—, —Si—, —Se—, —N(R6)—, n is a number satisfying a valence of M?, R1 to R4 and R6 are each a hydrogen atom, a halogen atom, a hydrocarbon group and the like, and X is a halogen atom, an oxygen atom, a hydrocarbon group and the like, and at least one compound (B) selected from the group consisting of an organometallic compound (B-1), an organoaluminum oxy-compound (B-2) and an ionic ionizing compound (B-3). Therefore, the process is capable of obtaining a polar olefin copolymer having excellent properties under mild polymerization conditions.Type: GrantFiled: July 3, 2001Date of Patent: May 30, 2006Assignee: Mitsui Chemicals, Inc.Inventors: Yoshihisa Inoue, Shigekazu Matsui, Yasuhiko Suzuki, Yasunori Yoshida, Yukihiro Takagi, Terunori Fujita, Tomoaki Matsugi, Takashi Nakano
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Publication number: 20060063898Abstract: A process for producing a polar olefin copolymer comprises copolymerizing a non-polar olefin and a polar olefin in the presence of a transition metal compound selected from Groups 4, 5, 6 and 11 of the periodic table, which is represented by the following formula (IV): wherein M? is a transition metal atom selected from Groups 4, 5, 6 and 11 of the periodic table, m is an integer of 1 to 6, A is —O—, —Si—, —Se—, —N(R6)—, n is a number satisfying a valence of M?, R1 to R4 and R6 are each a hydrogen atom, a halogen atom, a hydrocarbon group and the like, and X is a halogen atom, an oxygen atom, a hydrocarbon group and the like, and at least one compound (B) selected from the group consisting of an organometallic compound (B-1), an organoaluminum oxy-compound (B-2) and an ionic ionizing compound (B-3). Therefore, the process is capable of obtaining a polar olefin copolymer having excellent properties under mild polymerization conditions.Type: ApplicationFiled: October 20, 2005Publication date: March 23, 2006Inventors: Yoshihisa Inoue, Shigekazu Matsui, Yasuhiko Suzuki, Yasunori Yoshida, Yukihiro Takagi, Terunori Fujita, Tomoaki Matsugi, Takashi Nakano
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Patent number: 7009014Abstract: A process for polymerizing an olefin is capable of polymerizing an olefin with excellent polymerization activity, and comprises polymerizing or copolymerizing an olefin at a polymerization reaction temperature of 50 to 200° C. in the presence of a catalyst comprising a transition metal compound (A) represented by the following formula (I), a compound (B-1) having a reduction ability which reacts with the transition metal compound (A) to convert an imine structure moiety to a metal amide structure, and a compound (B-2) which reacts with the transition metal compound (A) to form an ion pair; wherein M is a transition metal atom of Groups 3 to 11 of the periodic table; m is an integer of 1 to 6; Y is O, S, Se, or —C(R7)—; R1 to R7 may be the same or different, and are each a hydrogen atom, a halogen atom, a hydrocarbon group, an oxgen-containing group, a nitrogen-containing group and the like; n is a number satisfying a valence of M; and X is a hydrogen atom, a halogen atom, a hydrocarbon group and the like.Type: GrantFiled: June 29, 2001Date of Patent: March 7, 2006Assignee: Mitsui Chemicals, Inc.Inventors: Yasuhiko Suzuki, Tomoaki Matsugi, Yukihiro Takagi, Yasunori Yoshida, Junji Saito, Shigekazu Matsui, Yoshihisa Inoue, Terunori Fujita
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Publication number: 20060000640Abstract: A multilayer printed wiring board which permits the formation of fine wiring patterns, thereby increasing the density of wiring patterns. Using photosensitive glass having a coefficient of thermal expansion close to that of a copper film as a core substrate, a through hole is formed in the photosensitive glass by photolithography, a sputtering silicon oxide layer and a sputtering silicon nitride layer are formed to prevent leak of alkali metal ions from the photosensitive glass, a sputtering chromium layer, a sputtering chromium-copper layer and a sputtering copper layer are formed to enhance the adhesion strength between the copper film and the sputtering silicon oxide layer, and a copper film of 1 to 20 ?m thick is formed. With resin filled into the interior of the through hole, a wiring layer is patterned by etching, an insulating layer is formed, and the surface is covered with a surface treatment layer and a cover coat.Type: ApplicationFiled: August 24, 2005Publication date: January 5, 2006Applicant: Hoya CorporationInventors: Takashi Fushie, Takeshi Kagatsume, Shigekazu Matsui
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Publication number: 20050176890Abstract: The invention has an object of providing a process for producing an ethylene/?-olefin/non-conjugated polyene copolymer with good polymerization activity and high conversion of non-conjugated polyene. The invention achieves the object by providing a process for producing an ethylene/?-olefin/non-conjugated polyene copolymer that comprises copolymerizing ethylene, an ?-olefin and a non-conjugated polyene in a hydrocarbon solvent with use of a transition metal compound catalyst, and removing the unreacted monomers and the hydrocarbon solvent from the copolymer solution without removing the catalyst residue, wherein the copolymerization is carried out at a polymerization temperature of 100° C. or above and a polymerization pressure of 2.7 MPa or above in a manner such that the non-conjugated polyene concentration in the polymerization solution is less than the maximum non-conjugated polyene concentration Cmax (mol/L) indicated below: Cmax=0.050 (mol/L) when the copolymer has an iodine value (IV) of 9.Type: ApplicationFiled: January 23, 2004Publication date: August 11, 2005Inventors: Sadahiko Matsuura, Hidetatsu Murakami, Yasuhiro Hasada, Junji Saito, Terunori Fujita, Shigekazu Matsui
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Publication number: 20050124771Abstract: The invention provides a process using olefin polymerization catalysts exhibiting excellent polymerization activities. The olefin polymerization catalysts of the invention contain a transition metal compound of and at least one of an organometallic compound, an organoaluminum oxy-compound or a compound which reacts with said transition metal compound to form an ion pair. The process using the inventive catalysts is useful in producing ?-olefin/conjugated diene copolymers having specific properties.Type: ApplicationFiled: January 5, 2005Publication date: June 9, 2005Applicant: Mitsui Chemicals, Inc.Inventors: Terunori Fujita, Yasushi Tohi, Makoto Mitani, Shigekazu Matsui, Junji Saito, Masatoshi Nitabaru, Kiyoaki Sugi, Haruyuki Makio, Toshiyuki Tsutsui
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Patent number: D543160Type: GrantFiled: September 23, 2004Date of Patent: May 22, 2007Assignee: Hoya CorporationInventors: Masaru Mitsui, Shigekazu Matsui, Masao Ushida, Osamu Nagarekawa
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Patent number: D568839Type: GrantFiled: January 23, 2007Date of Patent: May 13, 2008Assignee: Hoya CorporationInventors: Masaru Mitsui, Shigekazu Matsui, Masao Ushida, Osamu Nagarekawa
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Patent number: 5220471Abstract: A thin film magnetic head comprises a slider and a reading/writing element attached to an end surface of the slider, wherein the reading/writing element is disposed at an end surface in the longitudinal direction of the slider when the longitudinal direction and the width direction are determined on the surface which faces a magnetic recording medium, of the slider, and the slider has a linear groove in the surface opposite the surface which faces the magnetic recording medium, at the intermediate portion in the width direction of the slider and along the longitudinal direction.Type: GrantFiled: June 26, 1992Date of Patent: June 15, 1993Assignee: TDK CorporationInventor: Mikio Matsuzaki