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公开(公告)号：JPS5534967A
公开(公告)日：1980-03-11
申请号：JP10888378
申请日：1978-09-05
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI , NOGUCHI YUKIO
Abstract: PURPOSE:To improve dimensional stability, particularly, heat-contraction characteristics, by subjecting poly-p-phenylene sulfide two-axis-extended film to stretch heat treatment and thereby thermosetting it, and further by heat treating it under specified conditions. CONSTITUTION:Two-axis-extended film substantially made of poly-p-phenylene sulfide is heat treated under stretching, at 150-280 deg.C, preferably, at 250-280 deg.C, for 1-120 seconds, and thereby it is sufficiently thermoset. Next, the resultant substance is heat treated under the restriction for contraction or expansion within 20% in both lengthwise and crosswise directions, preferably within 10%, or at a fixed length, at a temperature below the preceding heat treatment temperature but above 50 deg.C, preferably, above 80 deg.C, for 1-10 seconds, and thereby the desired film is obtained. USE:Suitable for use for magnetic tape, optical image recording base, print circuit base, etc.
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公开(公告)号：JPS5285251A
公开(公告)日：1977-07-15
申请号：JP113976
申请日：1976-01-08
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI
Abstract: PURPOSE:To produce uniform, transparent and strong aromatic polyamide films without void, by adjusting the viscosity of a composition consisting of a specific aromatic polyamide, an organic solvent and an inorganic salt to a specific value, and by forming the composition films.
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公开(公告)号：JPS5284245A
公开(公告)日：1977-07-13
申请号：JP94176
申请日：1976-01-07
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI
Abstract: PURPOSE:To form aromatic polyamide film having high tenacity, heat resistance, low moisture absorption, from a solution in an organic solvent of an aromatic polyamide with the main components linked at the para position and having substituents on the nuclei, by dry-wet or wet process.
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公开(公告)号：JPS5250328A
公开(公告)日：1977-04-22
申请号：JP12588975
申请日：1975-10-21
Applicant: TORAY INDUSTRIES
Inventor： SUDOU YUKIO , ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI
IPC: B32B15/082 , B32B15/00 , B32B15/04 , C08J5/12 , C09J5/00
Abstract: PURPOSE:To obtain metal and fluorine polymer film laminate with high adhering strength and less pinholes.
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公开(公告)号：JPS51129201A
公开(公告)日：1976-11-10
申请号：JP5316075
申请日：1975-05-06
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , ITOGA MASAAKI , HOTSUTA KUNIHIRO
Abstract: PURPOSE:To provide the magnetic recording medium with good running performance, less jitter, skew and track shift, and of which recording density is increased by making the medium thin and of which base can conduct heat printing.
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Patent Agency Ranking
公开(公告)号：JPS6264523A
公开(公告)日：1987-03-23
申请号：JP14288286
申请日：1986-06-20
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , NOGUCHI YUKIO , KOBAYASHI HIROAKI
Abstract: PURPOSE:To obtain a biaxially oriented poly-p-phenylene sulfide film, which is thermally stable in dimensional change, mechanical characteristics, transparency and the like, by a method wherein poly-p-phenylene sulfide, which contains the required quantity or more of the specified repeating unit and has the specified melt viscosity, is molded into a sheet form and quenched and, after that, simultaneously biaxially oriented in the limited temperature range and finally thermoset at the specified temperature so as to set its density to the required value. CONSTITUTION:Poluy-p-phenylene sulfide, which contains 90% by mole or more of the repeating unit represented by the general formula and the melt viscosity of which at 300 deg.C and shearing speed of 200s is 100-600,000 poise, is melt-formed into a sheet form and quenched at a cooling speed of 5 deg.C/s or higher in order to obtain an amorphous film. In succession, the amorphous film is simultaneously biaxially oriented at 80-120 deg.C by the areal draw ratio of 400% or more. Further, the oriented film is thermoset at a temperature ranging from 180 deg.C to the melting point of the polymer in order to set the density of the film within the range of 1.330-1.400. The adopted thermosetting time varies from the unit of second to the unit of minute such as from about 1sec to the order of 10min.
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公开(公告)号：JPS5790018A
公开(公告)日：1982-06-04
申请号：JP16589680
申请日：1980-11-27
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI , NOGUCHI YUKIO
Abstract: PURPOSE:The titled polymer having excellent stability to oxidation, ultraviolet rays and melting and an excellent effect of preventing formation of corrosive gases, having electron-attracting groups and further containing aromatic residues chemically bonded to the phenylene sulfide chain. CONSTITUTION:A stabilized polyphenylene sulfide having, in the main chain, chain segments of the formula, wherein n is an integer >=20, and electron-attracting groups selected from the group consisting of -SO2-, -CO-, -NO2, -SO3R and -COOR, in which R is H, a lower hydrocarbon group, an aromatic hydrocarbon group or an alkali metal and further containing 0.05-10mol% (per phenyl sulfide unit) aromatic residues chemically bonded to the phenylene sulfide chain of the above-described formula. This polymer has an improved resistance to ultraviolet rays and a prolonged outdoor service life when molded. It is possible to carry out viscosity reduction in the molten state, to reduce formation of volatile low- MW matter including sulfur-containing inorganic gases and to reduce the gel fraction of a molding.
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公开(公告)号：JPS5538613A
公开(公告)日：1980-03-18
申请号：JP10888478
申请日：1978-09-05
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI , NOGUCHI YUKIO
Abstract: PURPOSE:To maintain mechanical performance even under a high temperature by reducing variation in size due to an change in envirotment such as a temperature and humidity, by using a specific poly-P-phenylene-sulfide film as a base film. CONSTITUTION:As a base film, a biaxial-orientation poly-P-phenylene-sulfide film is used which contains more than 90mol% of the repetitive unit of a formula, is more than 250Kg/mm in modulus of more than unidirectional elasticity at 20 deg.C, and is between -2X10 and 2X10 mm/(mm.C) in thermal expansivity in a range from 20 to 150 deg.C. On this film, a magnetic layer is formed by coating, plating, or the like. Here, productivity improves because the magnetic layer can be formed under a higher temperature than before. Further, the formation of the magnetic layer can be performed in an thermally-severe atmosphere of vapor-deposition, sputtering, etc.
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公开(公告)号：JPS54106564A
公开(公告)日：1979-08-21
申请号：JP1225378
申请日：1978-02-08
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI , MIZOUCHI MASANORI
Abstract: PURPOSE:An optically isotropic aromatic polyamide dope prepared by dissolving a specific para-oriented aromatic polyamide in a N-substituted amide solvent incorporated with lithium bromide and/or calcium bromide. CONSTITUTION:(A) An aromatic polyamide having repeating units, preferably of formula II, expressed by formula I: (X and Y are 1-3C alkyl, 1-3C alkoxy, nitro, cyano groups, or halogens; n and m are integers 0-4, however, are not 0 at the same time) as main structural units is dissolved in (B) a N-substituted amide solvent, e.g. N,N-dimethylacetamide or N-methyl-2-pyrrolidone, having a boiling point of about 250 deg.C or below incorporated with (C) lithium bromide and/ or calcium bromide. Preferably, the polymer (A) has an intrinsic viscosty of about 0.3-11 (measured by using a 0.5 g/100 ml solution in cone. sulfuric acid at 30 deg.), and its concentration is about 1-70 wt.% based on the total dope. The amount of components (C) is preferably about 10-200 wt.% based on the polymer weight.
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公开(公告)号：JPS54105197A
公开(公告)日：1979-08-17
申请号：JP1183278
申请日：1978-02-03
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI , MIZOUCHI MASANORI
Abstract: PURPOSE:To prepare an aromatic polyamide dope useful for films and fibers containing a reduced amount of the residual inorganic material and having excellent electrical characteristics, thermal properties, etc., by polymerizing an aromatic dicarboxylic acid with an excess amount of diamine, neutralizing the product with an alkali hydrogencarbonate, and separating the by-product when the viscosity is below a specific level. CONSTITUTION:An aromatic diamine, e.g. m-phenylenediamine, etc. (100 moles), is reacted with an aromatic dicarboxylic acid halide (80-99 moles) in a polar solvent, e.g. N-methylpyrrolidone, etc., by controlling the polymer concentration to attain the solution viscosity of
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