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公开(公告)号：JP2002332338A
公开(公告)日：2002-11-22
申请号：JP2001139648
申请日：2001-05-10
Applicant: TORAY INDUSTRIES
Inventor： HONMA YOSHIHIRO , MORIMOTO TSUTOMU , YOSHIDA MINORU
IPC: C08G63/88
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester composition whereby the improvement in heat resistance of a polyester composition and the improvement in productivity accompanying to catalyst recovery can be achieved by removing a metal from the composition. SOLUTION: In a polyester production process containing an esterification step using an esterification catalyst and a polycondensation step using a polycondensation catalyst, a polyester composition is produced by separating and recovering the esterification catalyst and/or the polycondensation catalyst by adding a ligand, provided the ligand contains at least one kind of donor atom which can be coordinated with a metal or a metal ion and is selected from the group consisting of nitrogen, sulfur, and oxygen.
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公开(公告)号：JP2001323141A
公开(公告)日：2001-11-20
申请号：JP2000142878
申请日：2000-05-16
Applicant: TORAY INDUSTRIES
Inventor： MORIMOTO TSUTOMU , HONMA YOSHIHIRO , CHIKUGI TOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film almost free from coarse projection and defects, and excellent in surface properties, oligomer deposition-inhibiting properties and productivity. SOLUTION: The polyester composition comprises a 10-30C higher fatty acid component, a 10-30C higher aliphatic alcohol component, or an ester compound thereof in an amount of 0.1-10 wt.% in total and gives measurements of molecular weight polydispersity by the GPC simultaneously satisfying following equations (1) and (2); Mw/Mn>4.4 (1), Mz/Mw>2.0 (2), wherein Mw is a weight-average mol.wt.; Mn is a number-average mol.wt.; and Mz is a z- average mol.wt. The polyester composition gives a polyester film excellent in oligomer deposition-inhibiting properties and is very suitably employed for film applications, as a film for a magnetic tape in particular.
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公开(公告)号：JP2000225676A
公开(公告)日：2000-08-15
申请号：JP3122099
申请日：1999-02-09
Applicant: TORAY INDUSTRIES
Inventor： MORIMOTO TSUTOMU , SHIMIZU YUZO , CHIKUGI TOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To reduce an oligomer precipitated on surface and, at the same time, improve the resistance against the wear of an edge by a method wherein the lubricant component content w in at least one layer of the three layers except the outer layer is set to be in a specified number range in wt.% and the thicknesses d of the respective outer layers are set to be above a specified numerical value and, at the same time, d/w is set to be above a specified numerical value. SOLUTION: The lubricant component content in at least one layer of a film laminatingly consisting of three or more layers except its outer layer is set to be 0.1-2.0 wt.%. If the content of a lubricant component in an inner layer is below 0.1 wt.%, no enough resistance against the wear of an edge can be obtained and if its content exceeds 2.0 wt.%, a bleed-out occurs not only at the edges but also at the surface of the film. If the thickness of respective outer layer is not set to be 0.03 μm or more and no relationship d/w >=0.2 is satisfied between the thickness d of the outer layer and the content w of the lubricant component in at least one layer among the inner layer, an effect for preventing the lubricant component in the inner layers from bleeding-out by the outer layer becomes insufficient.
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公开(公告)号：JPH11286038A
公开(公告)日：1999-10-19
申请号：JP8999598
申请日：1998-04-02
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , KUMAGAI TAKUYA , MORIMOTO TSUTOMU
Abstract: PROBLEM TO BE SOLVED: To realize a method for preparing a molded article with a small oligomer content in a thermoplastic resin film and a method for preparation for making substantially the oligomer content in the molded article less than the amt. of the oligomers in the raw material. SOLUTION: A method for melt extrusion of a thermoplastic resin wherein when amt. of oligomers in the raw material of a thermoplastic resin is Wm (wt.%) and amt. of oligomers in a molded article after the resin is molded by melt extrusion is Wf (wt.%), an increment ΔW of the oligomers satisfies formula W=Wf-Wm
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公开(公告)号：JPH11209589A
公开(公告)日：1999-08-03
申请号：JP969698
申请日：1998-01-21
Applicant: TORAY INDUSTRIES
Inventor： SHIMIZU YUZO , MORIMOTO TSUTOMU , CHIKUGI TOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To obtain a copolyester composition useful for films having excellent thermal perforation, printability, heat resistance, flavor preservation property, impact resistance and handleability and used for heat-sensitive stencil printing, etc., adding hydroxyapatite particles. SOLUTION: This copolyester composition contains hydroxyapatite particles preferably having an average particle diameter of 0.01-10 μm, a BET specific surface area of /g and a particle diameter relative standard deviation of
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Patent Agency Ranking
公开(公告)号：JPH10250019A
公开(公告)日：1998-09-22
申请号：JP6436197
申请日：1997-03-18
Applicant: TORAY INDUSTRIES
Inventor： MORIMOTO TSUTOMU , SHIMIZU YUZO , SUZUKI MASARU
IPC: B32B37/00 , B29C55/12 , B29K67/00 , B29L7/00 , B29L9/00 , B32B15/08 , B32B15/09 , B32B27/36 , C08G63/183 , C08G63/189 , C08G63/86 , C08K5/3415 , C08L67/00 , C08L79/08 , B29D9/00
Abstract: PROBLEM TO BE SOLVED: To provide excellent flavorfulness, heat resistance, and particularly impact resistance by disposing a polyester layer and a polyester layer made of polyester composition containing an imide plasticizer. SOLUTION: The metal plate adhering laminate polyester film is obtained by disposing a polyester layer A and a polyester layer B made of polyester composition containing an imide plasticizer. A melting point of the polyester for constituting the layer A is 150 to 250 deg.C from points of heat resistance and impact resistance, and the polyester for constituting the layer B is 20wt.% or less of the content of the plasticizer from points of the heat resistance and impact resistance, and its melting point is 270 deg.C or lower. And, a ratio Ta/Tb of the thickness Ta of the layer A to that Tb of the layer B is 0.01 to 10 from points of adhesive properties of the metal plate and heat resistance and impact resistance. And, the layer B is adhered to the plate, and the layer A is disposed at the side in contact with the content.
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公开(公告)号：JPH07268088A
公开(公告)日：1995-10-17
申请号：JP5913894
申请日：1994-03-29
Applicant: TORAY INDUSTRIES
Inventor： HIRANO TAKUMI , MORIMOTO TSUTOMU , SUZUKI MASARU
IPC: C08G63/692
Abstract: PURPOSE:To obtain a modified polyester excellent in flame retardancy, hydrolysis resistance and mechanical properties by adding a specified amount of P atoms originated in a plurality of specified P compounds to a polyester mainly made from an aromatic dicarboxylic acid and a glycol. CONSTITUTION:This polyester is prepared by adding 0.01-1wt.% P atoms originated in a P compound of formula I (wherein R1 and R2 are each a 1-20C bivalent hydrocarbon group; X is an esterifiable functional group; and (n) is 0-500) and 0.01-3wt.% P atoms originated in a P compound of formula II (wherein R3 is R1; R4 is a 1-10C monovalent hydrocarbon group; and R5 and R6 are each a hydrocarbon group having an esterifiable functional group) and has a total P atom content of 0.05-3wt.%.
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公开(公告)号：JPH07247348A
公开(公告)日：1995-09-26
申请号：JP4147094
申请日：1994-03-11
Applicant: TORAY INDUSTRIES
Inventor： HIRANO TAKUMI , MORIMOTO TSUTOMU , SUZUKI MASARU
IPC: C08G63/676 , C08G63/66 , C08J5/18
Abstract: PURPOSE:To obtain a modified polyester having excellent hue, pinhole resistance, heat resistance, impact resistance, moldability such as formability into film. CONSTITUTION:This modified polyester mainly consists of residues of an aromatic dicarboxylic acid, residues of an alkylene glycol and soft segments, wherein the amount of the soft segments is 5-40wt.% based on the polyester and which satisfies the requirements: (1) Tg
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公开(公告)号：JP2002363392A
公开(公告)日：2002-12-18
申请号：JP2001176950
申请日：2001-06-12
Applicant: TORAY INDUSTRIES
Inventor： KOJIMA HIROJI , MORIMOTO TSUTOMU , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition which excels in moldability, heat resistance, and transparency and is particularly suited in the optical application, and a film. SOLUTION: The polyester composition comprises 0.05-5 wt.% composite oxide particles which contain at least one element to be selected from the group consisting of Ca, Zn, Sb, Zr, B, Na, K, Li, and F and have an average particle diameter of 0.3-5 μm, a refractive index of 1.47-1.6, a pH of its 5 wt.% aqueous dispersion of >=8 and, simultaneously, a composition meeting three formulae of formula (1): 26 =90 mol% the constituting units are ethylene terephthalate units or ethylene naphthalate units.
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公开(公告)号：JP2002080620A
公开(公告)日：2002-03-19
申请号：JP2000272721
申请日：2000-09-08
Applicant: TORAY INDUSTRIES
Inventor： KOJIMA HIROJI , MORIMOTO TSUTOMU , YOSHIDA MINORU
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film that is excellent in cost performance and that has high hiding performance and high drawing performance. SOLUTION: This polyester film comprises 10-60 wt.% of inorganic particles with an average particle size of 1-20 μm and a specific gravity of 1.8-2.6 g/cm3. The film has a specific gravity of 0.8-1.3g/cm3 and a hiding rate of >=1.0. A polyester laminate film is prepared by having this film as a layer.
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