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公开(公告)号：JPH0657112A
公开(公告)日：1994-03-01
申请号：JP21513892
申请日：1992-08-12
Applicant: TORAY INDUSTRIES
Inventor： KIMURA MASAHIRO , AOYAMA MASATOSHI , SUZUKI MASARU
Abstract: PURPOSE:To obtain the polyester composition which gives a film excellent in resistance to abrasion and magnetic-layer surface marring during high-speed running by incorporating highly crosslinked polymer particles having a specific hardness. CONSTITUTION:This polyester composition contains particles of a crosslinked polymer having a degree of crosslinking of 60wt.% or higher which have a 10%-deformation strength (S10) satisfying the equation 3kgf/mm . Due to the specific hardness and a high degree of crosslinking, the particles have an excellent affinity for the polyester. When this composition is used in, e.g. a magnetic tape and an external force is applied to the tape during high-speed running, the particles are less apt to fall off, causing no dust generation. The particles are also less apt to mar the magnetic-layer surface. Hence, the equipment and atmosphere for film production can be prevented from being fouled. The composition is particularly suited for use in a magnetic tape, etc.
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公开(公告)号：JPH0525258A
公开(公告)日：1993-02-02
申请号：JP18473091
申请日：1991-07-24
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , MORITA TORU , UEDA TOMOAKI
IPC: C08G63/185 , C08G63/12 , C08G63/181 , C08G63/189 , C08G63/20 , C08G63/78 , C08J5/18
Abstract: PURPOSE:To provide a polyethylene 2,6-naphthalate copolymer excellent in elastic modulus and impact strength. CONSTITUTION:The objective copolyester which mainly comprises repeating ethylene 2,6-naphthalate units and is produced by reacting a monomer mixture contg. a compd. having at least three ester-forming groups in the molecule.
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公开(公告)号：JPH04175336A
公开(公告)日：1992-06-23
申请号：JP30254790
申请日：1990-11-09
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , MORITA TORU , UEDA TOMOAKI
Abstract: PURPOSE:To obtain an ultrathin film containing a large amount of particles but having a low content of surface defects by adding a specified slurry of particles inert to a polyester to the reaction system during the period from the time when the esterification is substantially accomplished to the time when the intrinsic viscosity reaches a specified value in the polycondensation step. CONSTITUTION:A process for producing a polyester by transesterifying or esterifying a dicarboxylic acid based on an aromatic dicarboxylic acid or its esterifiable derivative with a glycol and subsequently polycondensing the product, wherein a slurry prepared by dispersing particles inert to the polyester in a prepolymer having a molar ratio of a glycol component to an acid component of 5 or above is add to the reaction system during the period from the time when the transesterification or esterification reaction is substantially accomplished to the time when the intrinsic viscosity of the reaction product reaches 0.2 as the polycondensation reaction proceeds.
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公开(公告)号：JPH03287655A
公开(公告)日：1991-12-18
申请号：JP9001590
申请日：1990-04-04
Applicant: TORAY INDUSTRIES
Inventor： UEDA TOMOAKI , MORITA TORU , AOYAMA MASATOSHI
Abstract: PURPOSE:To prepare a polyester compsn. which is excellent in the ability to pass through production steps without causing such problems as filtration pressure increase and film breaking in producing an ultrathin film highly loaded with particles by compounding a polyester and a specified amt. of specific particles. CONSTITUTION:A polyester compsn. is prepd. by compounding a polyester (e.g. a polyethylene terephthalate) with 1-50wt.% (based on the polyester) particles inert to the polyester, having a mean diameter of 0.1-3mu, and contg. coarse particles having diameters of 5-10mu in an amt. satisfying the formula: B
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公开(公告)号：JP2004256719A
公开(公告)日：2004-09-16
申请号：JP2003050494
申请日：2003-02-27
Applicant: TORAY INDUSTRIES
Inventor： NAGANO TATSUYA , HONDA KEISUKE , AOYAMA MASATOSHI
IPC: C08G63/85
Abstract: PROBLEM TO BE SOLVED: To provide a polymerization catalyst which gives a polyester scarcely containing foreign matters and having good color tone, and a manufacturing process of the polyester using it. SOLUTION: The catalyst for polymerizing the polyester is a compound in which the number of titanium atoms in one molecule is 4-8, the composition ratio of titanium atoms to phosphorus atoms is 0.7-2, and which has at least one Ti-O-Ti bond. The manufacturing process of the polyester uses it. COPYRIGHT: (C)2004,JPO&NCIPI
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Patent Agency Ranking
公开(公告)号：JP2003238601A
公开(公告)日：2003-08-27
申请号：JP2002036356
申请日：2002-02-14
Applicant: TORAY INDUSTRIES
Inventor： ICHIKAWA TOMOKO , HONDA KEISUKE , AOYAMA MASATOSHI
IPC: C08B15/06
Abstract: PROBLEM TO BE SOLVED: To provide a production method which can solve problems involved in conventionally known methods for synthesizing a cellulose carbamate, yielding inexpensively a cellulose carbamate with high quality. SOLUTION: The method for producing a cellulose carbamate is specific in carbamating a cellulose by reacting it with an isocyanate by using a sulfoxide compound as a liquid phase in the reaction system. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003176345A
公开(公告)日：2003-06-24
申请号：JP2001377398
申请日：2001-12-11
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , TSUTSUMI KENICHI , ICHIKAWA TOMOKO
IPC: C08G63/85
Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition having excellent moldability and heat-resistance and free from the problems such as die contamination, increase of filtration pressure and yarn breakage in the production of molded articles such as fiber, film and bottle. SOLUTION: The polyester composition is produced by adding specific amounts of a titanium compound catalyst, a specific phosphorus compound and particles at an arbitrary stage to the reaction system having an intrinsic viscosity of ≤0.3. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2002356547A
公开(公告)日：2002-12-13
申请号：JP2002051076
申请日：2002-02-27
Applicant: TORAY INDUSTRIES
Inventor： TSUTSUMI KENICHI , AOYAMA MASATOSHI
IPC: C08G63/85
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester having a small amount of antimony and good polymerizability and excellent hue. SOLUTION: A polyester composition contains at least one compound selected from a group consisting of manganese, magnesium and calcium compounds, and titanium oxide particles satisfying specified relation of their contents and also contains antimony and germanium compounds by the contents of below 20 ppm in terms of a metal atom.
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公开(公告)号：JP2002338672A
公开(公告)日：2002-11-27
申请号：JP2001152457
申请日：2001-05-22
Applicant: TORAY INDUSTRIES
Inventor： HONDA KEISUKE , ICHIKAWA TOMOKO , AOYAMA MASATOSHI
IPC: C08G63/78
Abstract: PROBLEM TO BE SOLVED: To provide a process for producing a polyester having a high degree of polymerization and good dyeability, which provides improved economy as compared with previously known production processes. SOLUTION: The process for producing a polyester is characterized in that a cyclic polyester oligomer consisting of an aromatic ester structure containing a cationic dye exhaustion seat component is mixed and heated with a polyester.
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公开(公告)号：JP2002317041A
公开(公告)日：2002-10-31
申请号：JP2001120915
申请日：2001-04-19
Applicant: TORAY INDUSTRIES
Inventor： HONDA KEISUKE , ICHIKAWA TOMOKO , AOYAMA MASATOSHI
IPC: C08G63/81
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a cyclic polyester oligomer, which gives higher profitability than by conventional known production methods on the production of a high polymerization degree polyester. SOLUTION: The method for producing the cyclic polyester oligomer from a linear polyester oligomer or a linear polyester obtained by subjecting a dicarboxylic acid component and a diol component to an esterification reaction is characterized by controlling the unreacted materials contained in a reaction solvent to
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