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公开(公告)号：JP2001172378A
公开(公告)日：2001-06-26
申请号：JP36204599
申请日：1999-12-21
Applicant: TORAY INDUSTRIES
Inventor： HONDA KEISUKE , UCHIDA MINORU , AOYAMA MASATOSHI
IPC: C08G63/78
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester at a higher productivity. SOLUTION: In a method for producing a polyester by the polycondensatin of a product formed by the esterification of a dicarboxylic acid with a diol, the molar ratio R1 (diol/dicarboxylic acid) of the diol to the dicarboxylic acid charged to be subjected to esterification is set at 1.10 or lower, and water in an amount of 10 wt.% or lower of the sum of the dicarboxylic acid and the diol is added when the mixture of the acid and the diol is prepared, thus enabling a polymer having a high degree of polymerization to be obtained in a shorter time.
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公开(公告)号：JP2000191761A
公开(公告)日：2000-07-11
申请号：JP36727198
申请日：1998-12-24
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , HONDA KEISUKE , TSUTSUMI KENICHI
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester in high productivity, capable of realizing extremely high polymerization degree at the reaction-completing step, lessening the load by polycondensation and shortening the reaction time by polycondensing the product of esterification of a dicarbonic acid with a diol. SOLUTION: This high polymerization degree polyester is obtained by polycondensation of the product of esterification reaction of a dicarboxylic acid with a diol through an oligomer Z1 having >=5 average polymerization degree and 0.7-1.3 mol ratio RT of carboxyl terminal groups to hydroxyl terminal groups. This polyester oligomer Z1 preferably satisfies the formula 0.3
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公开(公告)号：JP2000169600A
公开(公告)日：2000-06-20
申请号：JP34533298
申请日：1998-12-04
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , AOYAMA MASATOSHI
IPC: C08J5/18 , B32B15/08 , B32B15/09 , B32B27/12 , B32B27/36 , C08G63/78 , C08G63/84 , C08G63/85 , C08K3/00 , C08K3/22 , C08K5/098 , C08K5/52 , C08L67/02
Abstract: PROBLEM TO BE SOLVED: To obtain a film which is used for a packaging material excellent in the capability of protecting the contents and is excellent in taste characteristics and corrosion resistance even after severe processing such as drawing or ironing by using as the constituents two or more catalyst components comprising metal compounds composed of metal elements selected from Ti, Al, Zr and Si, with the total content of these metal elements being a specified value. SOLUTION: This polyester satisfies the relation of the formula: 1
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公开(公告)号：JP2000159984A
公开(公告)日：2000-06-13
申请号：JP33899998
申请日：1998-11-30
Applicant: TORAY INDUSTRIES
Inventor： UCHIDA MINORU , AOYAMA MASATOSHI
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester composition good in thermal stability, transparency and polymer color tone, excellent in molding/forming processabilities, and useful for fibers, etc., by including specific phosphorus compound(s) and through polycondensation reaction without decline in the reactivity. SOLUTION: This polyester composition is obtained by including phosphorus compound(s) of formula I and/or II [R1 and R2 are each H, a 1-15C alkyl, phenyl, or the like; R3 is phenyl or a trivalent organic group; R4 and R5 are each carboxy, a hydroxyalkyl, or the like; R6 is (CH2)n (n is 2-4)] so as to be 20-1,000 ppm in the content based on the polyester polymer (calculated as phosphorus atom); wherein if an aromatic dicarboxylic acid or an ester-forming derivative thereof and a diol, or a low-molecular polyester oligomer is used as a starting material, it is preferable to incorporate the phosphorus compound(s) in the starting material.
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公开(公告)号：JPH11228681A
公开(公告)日：1999-08-24
申请号：JP3467398
申请日：1998-02-17
Applicant: TORAY INDUSTRIES
Inventor： TSUTSUMI KENICHI , AOYAMA MASATOSHI , HONDA KEISUKE
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester excellent in forming processability and capable of dissolving problems of fouling at a nozzle, increase in a filtration pressure, yarn break and the like. SOLUTION: This method for producing a polyester composition by polycondensing a product obtained by an esterification reaction or an transesterification of an aromatic dicarboxylic acid or an ester-formable derivative thereof with a diol or an ester-formable derivative thereof comprises using an aluminum compound as a polycondensation catalyst and regulating the molar ratio of the reaction system (the molar ratio of the diol or the ester-formable derivative thereof to the aromatic dicarboxylic acid or the ester-formable derivative thereof) at the point of the addition of the aluminum compound so as to be 1.25-2.0.
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Patent Agency Ranking
公开(公告)号：JPH101598A
公开(公告)日：1998-01-06
申请号：JP15242696
申请日：1996-06-13
Applicant: TORAY INDUSTRIES
Inventor： KOJIMA HIROJI , AOYAMA MASATOSHI , SUZUKI MASARU
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester composition having excellent abrasion resistance, by compounding a polyester with a specific amount of particles of calcium phosphate which have a specific volume average value and a specific relative standard derivative with respect to particle diameters. SOLUTION: Particles of calcium phosphate which have a volume average particle diameter of 0.01 to 3.0μm, a relative standard deviation represented by formulae I and II, wherein δ is a relative standard deviation, D is a number average particle diameter (μm), Di is a particle diameter (μm) and (n) is the number of particles, of 0.5 or less, a relative surface area of 10m /g or less and a Ca/P atomic ratio of 1.3 to 2.2 are mixed and agitated with ethylene glycol at a predetermined weight ratio, to thereby prepare an ethylene glycol slurry of calcium phosphate particles. And then, after ethylene glycol and an aromatic carbonic diester are subjected to transesterification, the resultant reaction mixture is mixed with the ethylene glycol slurry, a catalyst and a thermal stabilizer and subjected to condensation polymerization, thereby obtaining a polyester composition containing 0.001 to 10wt.% of calcium phosphate particles. This composition is melt-kneaded and extruded using an extruder. The extruded product is oriented and then heat-treated, so that a film having projections on its surface in a number of 2×10 to 5×10 /mm is produced.
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公开(公告)号：JPH09278993A
公开(公告)日：1997-10-28
申请号：JP9133096
申请日：1996-04-12
Applicant: TORAY INDUSTRIES
Inventor： KOJIMA HIROJI , AOYAMA MASATOSHI , SUZUKI MASARU
Abstract: PROBLEM TO BE SOLVED: To obtain the object composition good in moldability, capable of forming films having excellent running properties, surface uniformity and abrasion resistance, and useful for base films for magnetic tapes by adding specific inorganic particles in a specified amount to a polyester. SOLUTION: This polyester composition comprises (A) a polyester such as polyethylene-2,6-naphthalenedicarboxylate and (B) 0.05-10wt.% of inorganic particles [e.g. the particles having a volume-average particle diameter of 0.01-2.0μm, a σ value of 0.5 and a particle long diameter/short diameter ratio of 1.0-1.2) having a carboxylic acid metal salt on the surfaces of the particles in an amount of 10 mol per g of the particles. The σ value is defined by formula I ]Di is a particle diameter by a μm unit; (n) is the number of the particles; D is a number-average particle diameter defined by formula II; (σ) is a relative standard deviation].
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公开(公告)号：JPH07258393A
公开(公告)日：1995-10-09
申请号：JP5615094
申请日：1994-03-25
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , SASAKI TOSHIHIRO , OSHIMA KATSUNORI
IPC: C08G63/189 , C08G63/181 , C08G63/78 , C08G63/80
Abstract: PURPOSE:To obtain the polyester nonproblematic in the unevenness of agitation during melt polymerization and the unevenness of extrusion after melt polymerization. CONSTITUTION:This polyester is one obtained by effecting the solid-state polymerization of polyester obtained by solution polymerization, having an intrinsic viscosity of 0.45 or below and mainly consisting of repeating polyethylene-2,6- naphthalate units.
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公开(公告)号：JPH07207129A
公开(公告)日：1995-08-08
申请号：JP93494
申请日：1994-01-10
Applicant: TORAY INDUSTRIES
Inventor： KOJIMA HIROJI , AOYAMA MASATOSHI , SUZUKI MASARU
Abstract: PURPOSE:To obtain a polyester composition suitable for a film having a good slip property, wear resistance and scratch resistance, useful for a magnetic memory medium, containing a specific amount of inactive fine particles of which surfaces are treated with a carboxyl group-containing polymer compound. CONSTITUTION:This composition is containing 0.01-10(wt.)%, preferably 0.05-5% of inactive particles (preferably zirconium oxide, aluminum oxide, silicon oxide or titanium oxide) having a mean particle diameter of 0.005-2.0mum, preferably 1.0mum or smaller, of which surfaces are treated with a carboxyl group-containing polymer compound (preferably a carboxylated polymethacrylic acid, styrenesulfonic acid-maleic anhydride copolymer, etc.). It is more preferable to use inactive particles having a specific surface area of 10m /g or more, preferably 100m /g or more.
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公开(公告)号：JPH079647A
公开(公告)日：1995-01-13
申请号：JP15768393
申请日：1993-06-28
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , KOJIMA HIROJI , SUZUKI MASARU
Abstract: PURPOSE:To obtain a film whose abrasion resistance at traveling repeatedly is excellent and deterioration of image quality at dubbing is low by adding monoclinic or tetragonal zirconium oxide particle in one upmost outer layer of a laminate film consisting of two-layer structure. CONSTITUTION:As a polyester for constituting a laminate film, polyethylene terephthalate or polyethylene-2,6-naphthalene dicarboxylate which can form the film is preferable. Ordinarily, zirconium oxide particle can be obtained from zirconium ore to be produced naturally. The zirconium oxide particle can be produced by melting zircon sand, making oxy-zirconium chloride, and burning zirconium hydroxide. The zirconium oxide particle has a monoclinic or tetragonal crystal structure, and the monoclinic system and the tetragonal system may be mixed. The zirconium oxide particle is added in at least one utmost outer layer of the laminate film consisting of at least two-layer structure.
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