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    METHOD FOR PRODUCING POLYESTER FIBER
    65.
    发明专利
    METHOD FOR PRODUCING POLYESTER FIBER 失效

    公开(公告)号：JP2002105753A

    公开(公告)日：2002-04-10

    申请号：JP2000295507

    申请日：2000-09-28

    Applicant: TORAY INDUSTRIES

    Inventor： AOYAMA MASATOSHI ,  TSUTSUMI KENICHI

    IPC: C08G63/82 ,  D01F6/62

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing polyester fibers, by which the polyester fibers can be produced in good fiber productivity in a state scarcely causing the breakage of the fibers, when spun at a high speed. SOLUTION: This method for producing the polyesters, comprising spinning a polyester at a speed of >=5,500 m/min, characterized by using a titanium compound and an antimony compound in specific amounts, respectively, as polymerization catalysts.

    METHOD FOR PRODUCING POLYESTER
    66.
    发明专利
    METHOD FOR PRODUCING POLYESTER 失效

    公开(公告)号：JP2002080574A

    公开(公告)日：2002-03-19

    申请号：JP2000268200

    申请日：2000-09-05

    Applicant: TORAY INDUSTRIES

    Inventor： TSUTSUMI KENICHI ,  AOYAMA MASATOSHI ,  HONDA KEISUKE

    IPC: C08G63/85

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester having slight antimony content and having good color tone and heat resistance. SOLUTION: In this method for producing the polyester by polycondensing a product obtained by esterification reaction or transesterification of an aromatic dicarboxylic acid or its ester-formed derivative with a diol or its ester- formed derivative, a titanium compound and a phosphorus compound are mixed with the diol or the ester-formed derivative thereof and the mixture is heated at 160-220 deg.C and is added to the reaction system to attain the production of the polyester.

    POLYESTER FIBER FOR REINFORCING RUBBER
    67.
    发明专利
    POLYESTER FIBER FOR REINFORCING RUBBER 失效

    公开(公告)号：JP2001336027A

    公开(公告)日：2001-12-07

    申请号：JP2000157826

    申请日：2000-05-29

    Applicant: TORAY INDUSTRIES

    Inventor： UCHIDA MINORU ,  AOYAMA MASATOSHI ,  OZAKI MISA

    IPC: B60C9/00 ,  C08L21/00 ,  D01F6/62

    Abstract: PROBLEM TO BE SOLVED: To produce a polyester fiber for reinforcing a rubber, capable of substituting a rayon because of excellent dimensional stability and heat resistance in the rubber. SOLUTION: This polyester fiber for reinforcing the rubber is a polyester fiber containing the residue of a complex oxide in which its metal elements consist essentially of titanium and silicon, and is characterized in that the fiber is composed of a polyester containing 0.5-300 ppm titanium expressed in terms of titanium atom, and the dimensional stability [middle elongation (elongation at 4 cN/dtex) + heat shrinkage in dry air] is

    POLYMERIZATION CATALYST FOR POLYESTER EXCELLENT IN MOLDABILITY AND PROCESSABILITY, AND PRODUCTION OF POLYESTER USING THE SAME CATALYST
    68.
    发明专利
    POLYMERIZATION CATALYST FOR POLYESTER EXCELLENT IN MOLDABILITY AND PROCESSABILITY, AND PRODUCTION OF POLYESTER USING THE SAME CATALYST 失效

    公开(公告)号：JP2000109552A

    公开(公告)日：2000-04-18

    申请号：JP28268898

    申请日：1998-10-05

    Applicant: TORAY INDUSTRIES

    Inventor： HONDA KEISUKE ,  AOYAMA MASATOSHI ,  TSUTSUMI KENICHI

    IPC: C08G63/83 ,  C08G63/84 ,  C08G63/85

    Abstract: PROBLEM TO BE SOLVED: To obtain a polymerization catalyst for polyesters excellent in moldability and processability, in which problems such as stain of spinneret, increase of filtering pressure and yarn breakage are solved in production of a molding product for fibers, films and bottles, and provide a method for producing a polyester using the catalyst. SOLUTION: A main metal element as a polycondensation catalyst is a binuclear oxide composed of titanium and aluminum and the molar ratio of Ti:Al of the composition is (90:10) to (10:90), in a method for producing a polyester by polycondensing a product obtained by esterification or transesterification of an aromatic dicarboxylic acid or its ester-forming derivative with a diol or its ester-forming, derivative.

    POLYESTER COMPOSITION AND FILM
    69.
    发明专利
    POLYESTER COMPOSITION AND FILM 失效

    公开(公告)号：JPH0995601A

    公开(公告)日：1997-04-08

    申请号：JP18083796

    申请日：1996-07-10

    Applicant: TORAY INDUSTRIES

    Inventor： AOYAMA MASATOSHI ,  KOJIMA HIROJI ,  SUZUKI MASARU

    IPC: C08J5/18 ,  B32B27/36 ,  C08K3/22 ,  C08K3/26 ,  C08K3/30 ,  C08K3/34 ,  C08L67/00 ,  C08L101/00 ,  C08L101/06 ,  G11B5/62 ,  G11B5/73 ,  G11B5/733 ,  G11B5/704

    Abstract: PROBLEM TO BE SOLVED: To obtain a polyester composition which comprises specific polymer particles having hydroxyl groups and shows excellent slipperiness and abrasion resistance, when running at a low or high speed and is suitably useful in the application to magnetic recording medium, when it is formed to film and the like. SOLUTION: A polymer component having a hydroxyl group is arranged on the outermost layer and contains multilayered polymer particles with an average particle sizes of 0.005-2.0μm, preferably 0.02-1.0μm. The polymer particles have structural units of formula I and formula II and the content of the hydroxyl group is 1×10 -1×10 mol/g particles, at least a part of the hydroxyl groups is contained in the particles of crosslinked polymer. In addition, it is preferred that the particles mainly comprises a copolymer from a compound prepared by adding (B) a unsaturated monobasic acid to (A) a compound of 2 or more glycidyl group in one molecule, and (C) a compound bearing one vinyl group in one molecule.

    POLYESTER COMPOSITION AND FILM PREPARED THEREFROM
    70.
    发明专利
    POLYESTER COMPOSITION AND FILM PREPARED THEREFROM 失效

    公开(公告)号：JPH08113700A

    公开(公告)日：1996-05-07

    申请号：JP25187094

    申请日：1994-10-18

    Applicant: TORAY INDUSTRIES

    Inventor： AOYAMA MASATOSHI ,  KAGAMI NOBUYUKI ,  SUZUKI MASARU

    IPC: C08J5/18 ,  B32B27/36 ,  C08K3/22 ,  C08K5/09 ,  C08K5/49 ,  C08L67/00 ,  C08L67/02

    Abstract: PURPOSE: To obtain a polyester composition which is excellent in surface smoothness, slipperiness and wear resistance when formed into films by using specific particles and setting the composition and amount of a metallic compound contained in specific ranges. CONSTITUTION: This composition comprises a polyester containing 0.005-2.0wt.% of an organic polymer particles having an average particle size of 0.01-0.6μm and a particle size ratio (length/breadth) of 1.0-1.5 and at least one of an Mn compound and an Mg compound, a Ge compound and a P compound in amounts that satisfy the conditions of formulae I-III. Here, M, Ge and P represent the mol% of each atom of Mg or Mn, Ge and P in the Mg or Mn compound, Ge compound and P compound, respectively, based on a lower alkyl ester of a dicarboxylic acid. The composition is excellent in surface smoothness, slipperiness and wear resistance when formed into films and may suitably be used for magnetic recording media applications.

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