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公开(公告)号：JP2002012680A
公开(公告)日：2002-01-15
申请号：JP2001120913
申请日：2001-04-19
Applicant: TORAY INDUSTRIES
Inventor： HOSOKAWA HIROBUMI , TOUDAIJI TAKUJI , TSUNEKAWA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To provide a high quality polyester film excellent in rigidity and dimensional stability against heat and capable of being used for various applications. SOLUTION: In this polyester film a polyimide (B) is dispersed in a polyester (A) and the average dispersion size of the polyimide is 1-50 nm.
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公开(公告)号：JP2001347625A
公开(公告)日：2001-12-18
申请号：JP2001078265
申请日：2001-03-19
Applicant: TORAY INDUSTRIES
Inventor： MAEKAWA SHIGETOSHI , TSUNEKAWA TETSUYA , HOSOKAWA HIROBUMI
Abstract: PROBLEM TO BE SOLVED: To provide a laminated film excellent in productivity while holding high Young's modulus and a low heat shrinkage factor. SOLUTION: The laminated film has laminated constitution consisting of at least two layers and consists of a layer comprising liquid crystal polyester obtained by copolymerizing structural units represented by formulae (I), (II), (III) and (IV) [wherein, R1 and R2 are each at least one group selected groups (V), (VI) (wherein, X is a hydrogen atom or a chlorine atom)] and the layer comprising non-liquid crystalline polyester adjacent thereto.
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公开(公告)号：JP2000072897A
公开(公告)日：2000-03-07
申请号：JP24334798
申请日：1998-08-28
Applicant: TORAY INDUSTRIES
Inventor： TOUDAIJI TAKUJI , HOSOKAWA HIROBUMI , TSUNEKAWA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To prepare a biaxially oriented polyimide film having excellent melt- formability and drawing property, exhibiting excellent mechanical properties such as Young's modulus, having little defects such as thickness unevenness of the film and high quality and useful for magnetic recording medium, electrical insulation or the like, by constituting the film with a resin containing a specific polyimide. SOLUTION: The objective film is composed of a resin containing >=70 wt.% of a polyimide containing a structure unit of the formula [X is a (substituted) aliphatic hydrocarbon group or the like] and having a glass transition temperature of preferably 100-400 deg.C. The sum of the Young's moduli in longitudinal direction and lateral direction of the film is preferably 10-30 (GPa). The above polyimide can be produced by the dehydrative condensation of a tetracarboxylic acid and/or its acid anhydride comprising bis(3,4-dicarboxyphenyl)sulfone with a (substituted)aliphatic primary diamine and/or a (substituted)aromatic primary diamine (e.g. 2-aminodiphenylpropane) or the like.
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公开(公告)号：JP2000071329A
公开(公告)日：2000-03-07
申请号：JP13117599
申请日：1999-05-12
Applicant: TORAY INDUSTRIES
Inventor： TSUNEKAWA TETSUYA , KOTOURA MASAAKI , HOSOKAWA HIROBUMI
Abstract: PROBLEM TO BE SOLVED: To obtain a simultaneously biaxially stretched polyester film of high quality excellent in rigidity, toughness, heat shrinkage characteristics or the like and also reduced in thickness irregularity. SOLUTION: A polyester film consists of non-liquid crystal polyester (A) and copolyester (B) having a mesogen group in its main chain forming a phase separated structure in the non-liquid crystal polyester (A). The average dispersing diameter of the copolyester (B) is 0.01-5 μm.
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公开(公告)号：JP2002124432A
公开(公告)日：2002-04-26
申请号：JP2000317491
申请日：2000-10-18
Applicant: TORAY INDUSTRIES
Inventor： IMANISHI YASUYUKI , HOSOKAWA HIROBUMI , TSUNEKAWA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To provide a polyester film for a capacitor, which is excellent in humidity resistance and olygomer precipitation restraining property, a metallized film for a capacitor and a film capacitor using it. SOLUTION: The polyester film for a capacitor is a biaxially oriented polyester film consisting of polyester (A) containing wax compound 0.1 to 2.0 wt.% and surface roughness (Ra) of the film is 10 nm or more and 140 nm or less. The metallized film for a capacitor is formed by forming a metallic layer in at least one surface of the polyester film for a capacitor. The film capacitor is formed by using the metallized film for a capacitor.
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Patent Agency Ranking
公开(公告)号：JP2001049005A
公开(公告)日：2001-02-20
申请号：JP22781299
申请日：1999-08-11
Applicant: TORAY INDUSTRIES
Inventor： TOUDAIJI TAKUJI , TSUNEKAWA TETSUYA , HOSOKAWA HIROBUMI
Abstract: PROBLEM TO BE SOLVED: To prepare high quality biaxially oriented polyester film with improved mechanical properties such as Young's modulus and dimensional stability, which is excellent in traveling durability, shelf life and tracking resistance in floppy use as a magnetic recording medium and which is suitable for a thermal transfer ribbon or a capacitor, and to provide its preparation method. SOLUTION: A biaxially oriented polyester film comprises a polyester (A) and a polyether imide (B) and has a single glass transition temperature, wherein the diffraction peak of the crystal face in the main chain direction of the biaxially oriented polyester has a half-width in the range of 55-85 degrees in the circumference direction when the film is rotated about its normal line in crystal orientation analysis by diffractometry of wide angle X-ray diffraction.
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公开(公告)号：JP2000296594A
公开(公告)日：2000-10-24
申请号：JP10923099
申请日：1999-04-16
Applicant: TORAY INDUSTRIES
Inventor： TOUDAIJI TAKUJI , HOSOKAWA HIROBUMI , TSUNEKAWA TETSUYA
IPC: C08J5/18 , B29C47/06 , B29C55/12 , B32B27/34 , B32B27/36 , B41M5/382 , B41M5/40 , B41M5/41 , C08L67/02 , C08L79/08 , G11B5/73 , B41M5/38
Abstract: PROBLEM TO BE SOLVED: To donate superb mechanical strength and dimensional stability and improve the durability to environmental changes by forming a laminated polyester film of two or more layers of a lamination structure and also forming at least one layer of a polyester and a polyimide which are composed mainly of ethylene terephthalate units. SOLUTION: The laminated polyester film is formed of a two or more-layer lamination structure, at least one layer being formed of a polyester and a polyimide which are composed mainly of ethylene terephthalate units. The layer formed of the polyester and the polyimide shows 90-150 deg.C extrapolated glass transition starting temperature and the content of the polyimide is 1-50 wt.%. Besides, the polyimide is added in the form of a polyester imide. In addition, the sum of the Young's modulii in the longitudinal and the width direction of the laminated polyester film is set to be 10-25 (GPa) and the coefficient of thermal shrinkage of the laminated polyester film in at least either of the longitudinal or the width direction at 100 deg.C for 30 min. is set to be 0.01-2.0%. Further, the thickness of the laminated polyester film is preferably 1,000 μm or less.
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公开(公告)号：JP2003160718A
公开(公告)日：2003-06-06
申请号：JP2001360844
申请日：2001-11-27
Applicant: TORAY INDUSTRIES
Inventor： HOSOKAWA HIROBUMI , IMANISHI YASUYUKI , TSUNEKAWA TETSUYA
IPC: C08J5/18 , B29C55/12 , B29K67/00 , B29L7/00 , C08K5/1515 , C08K5/29 , C08K5/35 , C08K5/353 , C08L67/00 , C08L79/08 , G11B5/73 , H01G4/18
Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition excellent in thermal resistance and with less foreign matter, especially suitable for applying to magnetic materials use or capacitor use. SOLUTION: This polyester composition comprises a polyester (A), a polyimide (B) and a terminal cross-linker (C), where the amount of terminal carboxy group is 1-45 equivalent/10 6 g, and the metal content is 3-450 ppm. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2003101166A
公开(公告)日：2003-04-04
申请号：JP2001295894
申请日：2001-09-27
Applicant: TORAY INDUSTRIES
Inventor： IMANISHI YASUYUKI , HOSOKAWA HIROBUMI , TSUNEKAWA TETSUYA
IPC: H05K1/02
Abstract: PROBLEM TO BE SOLVED: To provide a reinforcing polyester film which provides appropriate strength, dimensional stability under thermal deformation, and peeling property when a flexible printed circuit is worked/manufactured. SOLUTION: The reinforcing polyester film is used when working with a flexible printed circuit board, and comprises polyester (A) and polyimide (B). The thermal shrinkage coefficient is 0.25% or less when it is raised from 50 deg.C to 17 deg.C and then lowered to 50 deg.C. The thermal shrinkage coefficient at falling from 150 deg.C to 50 deg.C is 13×10 to 50×10 / deg.C.
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公开(公告)号：JP2002317104A
公开(公告)日：2002-10-31
申请号：JP2001120914
申请日：2001-04-19
Applicant: TORAY INDUSTRIES
Inventor： HOSOKAWA HIROBUMI , IMANISHI YASUYUKI , TSUNEKAWA TETSUYA
Abstract: PROBLEM TO BE SOLVED: To provide a thermoplastic resin pellet which causes no welding to the wall surface of a dryer in the pellet-drying process, shows a greatly reduced quality irregularity of the product, and hence permits production of the product of a stabilized quality. SOLUTION: The thermoplastic resin pellet contains a polyester (A) and a polyimide (B) as resin components and 0.01-3 wt.% of an inert particle having an average particle size of 0.001-5 μm.
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