Patents by Inventor Mototake Tsutsui

Mototake Tsutsui 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).

  • Publication number: 20060057688
    Abstract: Vitamin K2 is separated from a cultured product of a Bacillus bacterium such as Bacillus natto by insolubilizing vitamin K2 contained in the cultured product using a metal ion of bivalent or more and separating the insolubilized vitamin K2 from the cultured product.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 16, 2006
    Inventors: Akiko Shimatani, Toshiharu Iwata, Mototake Tsutsui
  • Publication number: 20050096294
    Abstract: Provided by the present invention are an anti-coagulant comprising a polysaccharide having a structural unit in which an abundance ratio of glucose, glucuronic acid and rhamnose is 2:1:1 mole, preferably a polysaccharide having a structural unit represented by Formula (1) and more preferably a compound obtained by partially sulfating a hydroxyl group of gellan and an anti-thrombus agent or a blood contact face-treating agent for medical equipment comprising this anti-coagulant.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 5, 2005
    Inventors: Takashi Komai, Keiichi Miyamoto, Mototake Tsutsui, Ikuo Sato, Shinichi Takasaki
  • Patent number: 6515037
    Abstract: A polypropylene base resin composition for foam-molding which use's a propylene•&agr;,&ohgr;-diene base copolymer containing a small amount of &agr;,&ohgr;-diene and obtained by copolymerizing propylene with a specific amount of &agr;,&ohgr;-diene in the presence of a catalyst system for polymerizing olefin comprising a metallocene supported catalyst or a pre-activated metallocene supported catalyst and an organic aluminum compound and which provides a foamed article having uniform and fine foamed cells (bubbles) and a high foaming magnification, a foamable polypropylene base resin composition comprising the propylene•&agr;,&ohgr;-diene base copolymer and a specific amount of a foaming agent, a foamed article obtained by foam-molding the above composition, a production process for the above foamed article and a foam-molded product prepared by heat-molding the above foamed article.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 4, 2003
    Assignees: Chisso Corporation, Chisso Petrochemical Corporation
    Inventors: Mototake Tsutsui, Hiroyuki Maehara, Kouichi Hatada, Tsutomu Ushioda
  • Patent number: 6441111
    Abstract: A polydisperse propylene polymer characterized by being produced by polymerizing a propylene monomer or a mixed monomer of propylene and other olefin(s) by a multistage polymerization wherein the polymerization conditions are stepwise changed in the presence of a supported metallocene catalyst having a transition metal compound and an aluminoxane or a reaction product thereof supported on a finely particulate support, and an organoaluminum compound as a scavenger, and by having a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or higher, a melting point (Tm) of 165° C. or lower and a difference between the melting point (Tm) and a heat distortion temperature (HDT) of 30° C. or less.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: August 27, 2002
    Assignee: Chisso Corporation
    Inventors: Tsutomu Ushioda, Jun Saito, Mototake Tsutsui, Yoshitoyo Yasuda, Hiroyuki Fujita, Minoru Adachi
  • Patent number: 6410662
    Abstract: Disclosed is a process for producing olefin polymers or copolymers which can freely regulates the molecular weight of the polymers or copolymers as well as novel olefin polymers or copolymers excellent in rigidity, heat-resisting property and transparency, moldings and compositions thereof which find a wide variety of applications in versatile industrial parts including containers, films, sheets, filaments or fibers, featured by (1) a process for producing olefin polymers or copolymers by the aid of a catalyst comprised predominantly of the compounds: (A) a transition metal compound of the formula: Q(C5H4−mR1m)(C5H4−nR2n)MXY, (B) an aluminoxane, (C) a fine particulate carrier, and (D) an organoaluminum compound; (2) olefin polymers or copolymers characterized by (a) a specific ratio of isotactic pentad, (b) 2,1- and 1.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: June 25, 2002
    Assignee: Chisso Corporation
    Inventors: Tsutomu Ushioda, Jun Saito, Mototake Tsutsui, Yoshitoyo Yasuda, Hiroyuki Fujita, Toshihiro Uwai, Yoshiyuki Ohgi, Minoru Adachi, Yoshitaka Morimoto, Taketo Hirose, Youichi Kugimiya, Masahiko Taniguchi, Hitoshi Kuramochi
  • Patent number: 6388040
    Abstract: A propylene/ethylene/&agr;-olefin terpolymer characterized in that i) there is from 0.01 mol % to less than 15 mol % of a comonomer unit with a molar ratio of ethylene units/C4-C20 &agr;-olefin units being in the range of from 6.5×10−4 to 0.99, and from more than 85 mol % to not more than 99.99 mol % of a propylene unit with 2,1- and 1,3-propylene units being in the range of from 0 to 1 mol %, in a polymer chain determined by 13C-NMR spectroscopy; ii) a weight average molecular weight (Mw) determined by GPC is in the range of from 40,000 to 1,000,000; and iii) the amount of the component eluted in o-dichlorobenzene at a temperature of not higher than 40° C. is not more than 10 % by weight based on the total weight of the terpolymer and the amount of the component eluted in o-dichlorobenzene within the ±10° C. range of an elution peak temperature is not less than 75 % by weight based on the weight of the component eluted at a temperature of higher than 0° C.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: May 14, 2002
    Assignee: Chisso Corporation
    Inventors: Hiroyuki Fujita, Jun Saito, Yoshitoyo Yasuda, Yoshiyuki Ohgi, Yasuhiro Shiraishi, Shinji Nakata, Tsutomu Ushioda, Mototake Tsutsui
  • Patent number: 6365689
    Abstract: The present invention provides propylene/ethylene random copolymers characterized in that: an ethylene content (Ew) is 0.1-10 wt %, a relationship between an isolated ethylene content (E1) and the ethylene content (Ew) is represented by the following equation E1>0.85−0.01 Ew 2,1- and 1,3-propylene units present in a polymer chain are 0-1 mol %, a weight average molecular weight (Mw) is in the range of 40,000-1,000,000, and a ratio (Mw/Mn) of the weight average molecular weight (Mw) to a number average molecular weight(Mn) is in the range of 1.5-3.8. The copolymers are suitable for a base resin for a molding material for the production of a wide variety of molded articles which are high in randomness and excellent in stiffness, heat resistance and transparency.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: April 2, 2002
    Assignee: Chisso Corporation
    Inventors: Tsutomu Ushioda, Jun Saito, Mototake Tsutsui, Yoshitoyo Yasuda, Hiroyuki Fujita, Yoshiyuki Oogi, Minoru Adachi, Yoshitaka Morimoto, Taketo Hirose, Youichi Kugimiya, Yasuhiro Shiraishi
  • Patent number: 6344528
    Abstract: To provide a catalyst for olefin (co)polymerization which shows a high polymerization activity and which can produce olefin (co)polymers having a high molecular weight and a narrow molecular weight distribution; the catalyst for olefin (co)polymerization is rendered a carried type catalyst comprising a transition metal compound represented by general formula (I) or (II) and aluminoxane carried on a fine particulate carrier.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: February 5, 2002
    Assignee: Chisso Corporation
    Inventors: Tsutomu Ushioda, Jun Saito, Mototake Tsutsui
  • Patent number: 6326432
    Abstract: Disclosed is a polypropylene composition excellent in balance of low temperature impact-strength, rigidity, heat resistance and transparency, which is featured by comprising 20-95% by weight of a polypropylene defined in the following [I] and 5-80% by weight of a propylene-&agr;-olefin copolymer defined in the following [II]: [I] a polypropylene featured by having: (1) a ratio of isotactic pentad (mmmm) of 0.900-0.949, (2) the 2,1- and 1,3-propylene units in the polymer chain in the amount of 0-1 mole %, (3) a weight average molecular weight (Mw) of 40,000-1,000,000, (4) a ratio of a weight average molecular weight (Mw) to a number average molecular weight (Mn), i.e. (Mw)/(Mn) of 1.5-3.8, and (5) in case of elevating the temperature of o-dichlorobenzene continuously or stepwise up to given temperatures to measure the amount of eluted polypropylene at each temperature, the position of a main elution peak is 95-110° C.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: December 4, 2001
    Assignee: Chisso Corporation
    Inventors: Hiroyuki Fujita, Jun Saito, Yoshitoyo Yasuda, Tsutomu Ushioda, Mototake Tsutsui, Yoshiyuki Ohgi, Minoru Adachi
  • Patent number: 6303696
    Abstract: The present invention provides a polypropylene composition having a high melt tension and an excellent formability by blending polypropylene (I) produced with a metallocene catalyst type and an olefin (co)polymer (II) comprising 0.01 to 5 parts by weight of the following component (II-1) and 100 parts by weight of the following component (II-2); (II-1): an ethylene homopolymer or an ethylene-olefin copolymer comprising at least 50 wt % ethylene polymerization units, which is a high molecular weight polyethylene having an intrinsic viscosity [&eegr;E] measured in tetralin at 135° C. of 15 to 100 dl/g; and (II-2): polypropylene.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: October 16, 2001
    Assignee: Chisso Corporation
    Inventors: Tsutomu Ushioda, Jun Saito, Mototake Tsutsui, Shingo Kikukawa, Akira Yamauchi
  • Patent number: 6303698
    Abstract: Disclosed is propylene copolymers produced by the aid of a specific metallocene catalyst system, wherein a percentage of mis-insertion in the copolymer is highly controlled and the copolymers possess beat-resisting property and a high melt strength and a low MFR and are narrow in molecular weight distribution excellent in particulate properties as well as a process for producing the copolymers possessing high steroregularity at a practical polymerzation temperature. The gist of the present invention resides in production of propylene copolymers wherein copolymerization with &agr;,&ohgr;-diene is carried out by the aid of a supported-type catalyst system comprised predominantly of the following compound (A), (B), (C) and (D) at a temperature above 45° C.: the compound (A): a specific metallocene compound represented by Q(C5H4−mR1m)(C5H4−nR2n) MXY, the compound (B): an aluminoxane, the compound (C): an organoaluminum compound, and the compound (D): a particulate carrier.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: October 16, 2001
    Assignee: Chisso Corporation
    Inventors: Tsutomu Ushioda, Jun Saito, Mototake Tsutsui, Yoshitoyo Yasuda, Hiroyuki Fujita, Yoshiyuki Ohgi
  • Publication number: 20010020045
    Abstract: A polypropylene base resin composition for foam-molding which use's a propylene•&agr;,&ohgr;-diene base copolymer containing a small amount of &agr;,&ohgr;-diene and obtained by copolymerizing propylene with a specific amount of &agr;,&ohgr;-diene in the presence of a catalyst system for polymerizing olefin comprising a metallocene supported catalyst or a pre-activated metallocene supported catalyst and an organic aluminum compound and which provides a foamed article having uniform and fine foamed cells (bubbles) and a high foaming magnification, a foamable polypropylene base resin composition comprising the propylene•&agr;,&ohgr;-diene base copolymer and a specific amount of a foaming agent, a foamed article obtained by foam-molding the above composition, a production process for the above foamed article and a foam-molded product prepared by heat-molding the above foamed article.
    Type: Application
    Filed: February 16, 2001
    Publication date: September 6, 2001
    Applicant: Chisso Corporation
    Inventors: Mototake Tsutsui, Hiroyuki Maehara, Kouichi Hatada, Tsutomu Ushioda
  • Patent number: 6153710
    Abstract: An olefin (co)polymer composition comprising, as major components, (a) 0.01 to 5 parts by weight of an olefin (co)polymer having an intrinsic viscosity [.eta..sub.a ] as measured in 135.degree. C. tetralin of 15 to 100 dl/g and (b) 100 parts by weight of an olefin (co)polymer obtained by using a metallocene catalyst and having an intrinsic viscosity [.eta..sub.b ] as measured in 135.degree. C. tetralin of 0.2 to 10 dl/g. When polyethylene having a high degree of polymerization is produced before a so-called metallocene catalyst is used to polymerize, e.g., propylene in the presence of the polyethylene as a component of a catalyst composition, a polypropylene composition having a high melt tension and a high crystallization temperature is produced.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: November 28, 2000
    Assignee: Chisso Corporation
    Inventors: Jun Saito, Shingo Kikukawa, Tsutomu Ushioda, Akiko Kageyama, Mototake Tsutsui