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公开(公告)号：JPH0645714A
公开(公告)日：1994-02-18
申请号：JP19536992
申请日：1992-07-22
Applicant: TORAY INDUSTRIES
Inventor： MIYAJI SHINICHIRO , KIDA KENJI , UEDA TOMOAKI
Abstract: PURPOSE:To accomplish a circuit substrate (including a multilayer circuit substrate) having well-balanced heat-resisting property, dimensional stability to heat, high frequency characteristics, moisture absorption characteristics and the like in high dimensions, also having high adhesive strength with a circuit layer, small conductive resistance on circuit, especially suitable for high-speed signal processing and adaptability for high frequency. CONSTITUTION:This multilayer substrate is formed on the surface of a fiber sheet which is formed by impregnating a resin composition, which is mainly composed of poly-p-phenylene sulfide, by laminating a circuit substrate consisting of an electric circuit of metal layer formed through the intermediary of a resin composition layer consisting of copolymer polyphenylene sulfide containing one or more kinds of copolymer unit other than a p-phenylene sulfide unit.
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公开(公告)号：JPH05318665A
公开(公告)日：1993-12-03
申请号：JP15004992
申请日：1992-05-19
Applicant: TORAY INDUSTRIES
Inventor： NOGUCHI YUKIO , KIDA KENJI , UEDA TOMOAKI
IPC: B29C55/12 , B29K67/00 , B29K81/00 , B29L9/00 , B29L31/34 , B32B27/00 , B32B27/08 , B32B27/36 , C23C14/20 , H01G4/06
Abstract: PURPOSE:To achieve the reduction of low voltage breakdown frequency and the enhancement of self-healing properties and humidity resistance by setting the sum thickness of surface layers each composed of a polyester film to a specific % range with respect to the thickness of a center layer made of a biaxially oriented film made of poly-p-phenylene sulfide represented by a specific structural formula. CONSTITUTION:A polyphenylene sulfide laminated film is obtained by laminating surface layers (A-layers) each composed of a polyester film on both surfaces of a center layer (B-layer) composed of a biaxially oriented film of poly-p- phenylene sulfide wherein 70mol% or more of a repeating unit is represented by formula I. The sum thickness of the A-layers is set to 30-50% of the thickness of the B-layer and the intrinsic viscosity of polyester is set to 0.62 or more. This polyphenylene sulfide laminated film is reduced in low voltage breakdown frequency and improved in self-healing properties and humidity resistance at the time of the application of voltage and a condenser constant in capacity over a side temp. range and enhanced in reliability can be produced using said film.
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公开(公告)号：JPH05310957A
公开(公告)日：1993-11-22
申请号：JP14686092
申请日：1992-05-13
Applicant: TORAY INDUSTRIES
Inventor： MIYAJI SHINICHIRO , KIDA KENJI , UEDA TOMOAKI
Abstract: PURPOSE:To provide an insulating substrate utilizing the excellent high frequency characteristics, low hygroscopicity and flame retardancy of polyphenylene sulfide, excellent in the heat resistance and processability for circuit substrates, and suitable for the circuit substrates requiring the high speed treatments and high frequency treatments of signals, and to provide the circuit substrate (including multi-layer circuit substrates). CONSTITUTION:The fiber sheet having a thermal shrinkage of
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公开(公告)号：JPH0577375A
公开(公告)日：1993-03-30
申请号：JP24315091
申请日：1991-09-24
Applicant: TORAY INDUSTRIES
Inventor： AOKI SEIZO , UEDA TOMOAKI , KOMAKI MITSURU
Abstract: PURPOSE:To obtain a condenser film improved in heat resistance, moisture resistance, and life without deteriorating other electric characteristics by providing a sub-layer made of a polymer on a polyester film. CONSTITUTION:A condenser composite polyester film is formed by providing a sub-layer made of a polyolefin resin, a polyester resin, or the like on a main layer made of a polyester by a composite fusion extrusion method or the like. At this time, a relation between a surface resistivity Rs(B) under a high- temperature and moist condition at 80 deg.C and 90% RH in the state of only the main layer and a surface resistivity Rs(A) under the same condition in the state of the composite film is determined to be Rs(A)/Rs(B)>1.0. Alternatively, under the same high-temperature and moist condition, a relation between a volume resistivity Rv(B) in the state of only the main layer and a volume resistivity Rv(A) in the state of the composite film is determined to be Rv(A)/Rv(B)>1.0.
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公开(公告)号：JPH04309523A
公开(公告)日：1992-11-02
申请号：JP7519791
申请日：1991-04-08
Applicant: TORAY INDUSTRIES
Inventor： MORITA TORU , NAGAHAMA AKIHIKO , UEDA TOMOAKI
Abstract: PURPOSE:To obtain a polyester excellent in dispersion of inert particles and capable of giving a fiber or a film at good productivity by performing specified treatment after substantially completing the transesterification reaction in producing the polyester from an aromatic dicarboxylic ester and a glycol. CONSTITUTION:A process for producing a polyester from an aromatic dicarboxylic acid ester (e.g. dimethyl terephthalate) and a glycol (e.g. ethylene glycol), which comprises adding, after the transesterification reaction is substantially completed, 0.5-5.0mol, per mol of the acid component, of a glycol to the reaction product without substantially distilling it from the reaction system, raising the temperature in the reaction system to 150-200 deg.C, and adding a glycol slurry of particles (e.g. colloidal silica) inert to the polyester in the same reaction temperature range.
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Patent Agency Ranking
公开(公告)号：JPH0457692B2
公开(公告)日：1992-09-14
申请号：JP12607782
申请日：1982-07-20
Applicant: TORAY INDUSTRIES
Inventor： UEDA TOMOAKI , MORITA TOORU , OKASAKA HIDESADA
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公开(公告)号：JPH0455464A
公开(公告)日：1992-02-24
申请号：JP16746490
申请日：1990-06-25
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SAKAMOTO JUN , UEDA TOMOAKI
Abstract: PURPOSE:To obtain the title composition capable of obtaining fibers or films of excellent travelability and wear resistance, esp. suitable for magnetic tapes by incorporating a thermoplastic polyester with spherical vaterite-type calcium carbonate particles. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100 pts. wt. of a thermoplastic polyester made up of (1) a carboxylic acid component predominant in an aromatic dicarboxylic acid and (2) a glycol component predominant in an aliphatic glycol with (B) 0.01 - 10 pts. wt. of vaterite- type calcium carbonate having >= 30 m /g in the specific surface area determined by the BET adsorption technique, 0.01 - 5mum in mean particle diameter and 0.3 - 0.52 in the view factor (f) of the equation (V is particle volume mum ; D is maximal diameter mum of the projected area of particle), prepared by blowing carbon dioxide in calcium hydroxide in an alcoholic solvent to once convert into an amorphous gelled product, which is then put to regulation for particle shape, particle size distribution, and particle diameter, etc.
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公开(公告)号：JPH0415220A
公开(公告)日：1992-01-20
申请号：JP11906190
申请日：1990-05-09
Applicant: TORAY INDUSTRIES
Inventor： NAGAHAMA AKIHIKO , MORITA TORU , UEDA TOMOAKI
IPC: C08G63/78
Abstract: PURPOSE:To prevent the increase in filtration pressure and film breakage esp. in producing a very thin film and obtain a film with few defects by adding a glycol slurry contg. inert particles to the reaction system for producing a polyester from a dicarboxylic acid component and a glycol component at a specified reaction step under specified conditions. CONSTITUTION:In producing a polyester from a dicarboxylic acid component mainly comprising an arom. dicarboxylic acid or an ester-forming deriv. thereof and a glycol component by transesterification or esterification followed by polycondensation, a glycol slurry which contains particles inert to the polyester and is at a temp. different from that of the reaction system by at most 10 deg.C is added to the system continuously or intermittently before the intrinsic viscosity of the system reaches 0.2.
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公开(公告)号：JPH047349A
公开(公告)日：1992-01-10
申请号：JP10710690
申请日：1990-04-23
Applicant: TORAY INDUSTRIES
Inventor： KIDA KENJI , UEDA TOMOAKI
IPC: C08K5/09 , C08G63/688 , C08G63/78 , C08L67/00 , C08L67/02
Abstract: PURPOSE:To obtain the title composition excellent in adhesiveness, having antistatic properties and suited as an adhesive having a low content of insoluble coarse particles by mixing an acid component with a lithium sulfonate group- containing isophthalic acid component and an excess of Li atoms. CONSTITUTION:A polyester composition is obtained by mixing a polyester comprising an acid component and a glycol component, wherein said acid component contains a lithium sulfonate groupcontaining isophthalic acid component in an amount satisfying formula I (wherein [SI] is the molar percentage, based on the total acid component, of the total sulfonate group-containing isophthalic acid component contained in the polyester composition), with Li atoms other than those contained in the lithium sulfonate group-containing isophthalic acid in an amount satisfying formula II (wherein [Li] is the molar percentage, based on the total acid component, of the total Li atoms contained in the polyester composition The above composition not only has improved adhesiveness but also is satisfactory in antistatic properties and transparency, and therefore the adhesion of dirts, dusts, etc., is little. When it is used as an adhesive layer for bonding the magnetic layer of a magnetic recording medium with its support, it is markedly effective.
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公开(公告)号：JPH047325A
公开(公告)日：1992-01-10
申请号：JP10710890
申请日：1990-04-23
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , MORITA TORU , UEDA TOMOAKI
Abstract: PURPOSE:To prepare a polyester compsn. which contains coarse particles only in a small proportion though it contains particles in a large proportion by adding a glycol slurry contg. the particles inert to the polyester in a specific way to the reaction system at the steps of esterification or transesterification and polycondensation for preparing the polyester. CONSTITUTION:In preparing a polyester by esterifying or transesterifying a dicarboxylic acid component contg. an arom. dicarboxylic acid as the main component or an ester-forming deriv. thereof with a glycol and polycondensing the resulting ester, a glycol slurry of particles inert to the polyester is added to the reaction system at least once after the conversion of esterification or transesterification reaches 0.2 or higher and before the completion of esterification or transesterification, and at least once after the completion of esterification or transesterification and before the intrinsic viscosity of the reaction product reaches 0.2 as a result of the progress of polycondensation.
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