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公开(公告)号：JPS6080125A
公开(公告)日：1985-05-08
申请号：JP18864983
申请日：1983-10-07
Applicant: TORAY INDUSTRIES
Inventor： DEGUCHI YUUKICHI , KOBAYASHI HIROAKI , ASAKURA TOSHIYUKI
Abstract: PURPOSE:To obtain a floppy disk which is dimensionally stable to the change of temp. and humidity by laminating a high polymer film having specified surface roughness on both surfaces of a specified biaxially oriented poly-p-phenylene sulfide (PPS) film. CONSTITUTION:The PPS contg. >=70mol% repeating unit shown by the formula and deg.C thermal expansion coefficient at 25 deg.C in the direction of the main orientation axis, 0.001-0.3mu mean surface roughness on both surfaces, and coarse projection density. A biaxially oriented high polymer film such as polyethylene terephthalate having >=100 particle/mm. particle density and
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Patent Agency Ranking
公开(公告)号：JPS6071663A
公开(公告)日：1985-04-23
申请号：JP17827183
申请日：1983-09-28
Applicant: TORAY INDUSTRIES
Inventor： HOTSUTA KUNIHIRO , KOBAYASHI HIROAKI , ASAKURA TOSHIYUKI
Abstract: PURPOSE:To provide titled film of improved weatherability, incorporated with specific benzotriazole compound. CONSTITUTION:The objective film can be obtained by incorporating (A) 100pts. wt. of polyphenylene sulfide (hereafter referred to PPS) constituted mainly by structural unit of formula I with (B) 0.01-10 (pref. 0.1-3)pts.wt. of a compound having in one molecule at least one benzotriazole group (of formula II), having a molecular weight >=360 (pref. >=460) (pref. one capable of absorbing rays of wave lengths ranging 350-400mmu) followed by film making. Said PPS film has a virtual density 1,330-1,390g/cc, being pref. 50-100,000 (pref. 70- 50,000) poises in appearent melt viscosity at 300 deg.C under a shear rate of 200sec .
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公开(公告)号：JPS5998134A
公开(公告)日：1984-06-06
申请号：JP20753182
申请日：1982-11-29
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , MUTAGUCHI YASUHIKO , KOBAYASHI HIROAKI
Abstract: PURPOSE:In polymerizing polyphenylene sulfide from a p-dihalobenzene and a sulfur source in a polar solvent of organic amide, to obtain a polymer having high polymerization degree, improved transparency and crystallizability, by using a specific amount of a specified auxiliary. CONSTITUTION:In polymerizing a p-dihalobenzene (preferably p-dichlorobenzene, and 0.95-1.10mol p-dichlorobenzene is used based on a sulfur source) with the sulfur source (preferably sodium sulfide) in a polar solvent of organic amide (preferably N methyl 2 pyrrolidone) to give polyphenylene sulfide shown by the formula I , 1-200mol%, preferably 10-150mol% alkali metal salt of a polycarboxylic acid (e.g., sodium ortho-phthalate, etc. having >=5g/100ml, preferably >=10g/100ml solubility in water at 25 deg.C) shown by the formula II (R is mainly 1-20C hydrocarbon; M is alkali metal; n is integer of >=2) based on the sulfur source.
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公开(公告)号：JPS5662127A
公开(公告)日：1981-05-27
申请号：JP13755779
申请日：1979-10-26
Applicant: TORAY INDUSTRIES
Inventor： KOBAYASHI HIROAKI , ASAKURA TOSHIYUKI , NOGUCHI YUKIO
Abstract: PURPOSE:To obtain film which has a specific melt viscosity, is made from p-phenylene sulfide, takes a specific value for the inclination at an elongation percentage 20% in a stress-strain curve and in which mechanical properties, chemical resistance and heat resistance are harmonized with one another. CONSTITUTION:Biaxially oriented film is that which is made from poly-p-phenylene sulfide wherein the cuntent of repeating units of the formula is at least 90mol%, the melt viscosity at 300 deg.C ranges from 300 up to 100,000 poise under a shear rate 200/sec and when a piece of 10mm.-wide film cut in the length and breadth direction is stretched at 25 deg.C and at a rate 600%/min, the inclination at an elongation percentage 20% in a stress-strain curve is of 0.01-1.0kg/mm. /% in length and in breadth In order to obtain the film having these properties it is important to set into the optimum range stretching conditions such as, especially, stretching temperature, percentage of stretching and stretching balance in length and breadth, etc. The optimum ranges differ according to properties of polymers.
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公开(公告)号：JPS5662126A
公开(公告)日：1981-05-27
申请号：JP13755679
申请日：1979-10-26
Applicant: TORAY INDUSTRIES
Inventor： KOBAYASHI HIROAKI , ASAKURA TOSHIYUKI , NOGUCHI YUKIO
Abstract: PURPOSE:To obtain wrinkle-free film which is excellent in light transmission, heat resistance and mechanical properties, by a method wherein the title polymer having a high polymerization degree and a specific melt viscosity is melted and extruded in the form of film and then is stretched biaxially and heat-treated under specific conditions. CONSTITUTION:Polyphenylene sulfide having a high degree of polymerization wherein the content of repeating units of farmula I is 90mol% or more and the specific melt viscosity muO ranges 300-100,000 poise at a temperature of 300 deg.C and at a shear rate of 200/sec is melted, extruded in the form of film and then is stretched biaxially so that the degree of double refraction of the stretched film satisfies equations II and III (wherein ngamma, nbeta are refractive indexes in the major and minor axial directions on a section parallel to the film surface of an optical indicatrix, nalpha is a refractive index in the direction of thickness and the density rho satisfier equation IV (where rhoO is an amorphous density). Then, heat-treatment is conducted under such conditions that dimensional changes in length and breadth do not exceed + or -15% and equation V be satisfied.
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公开(公告)号：JPS5284246A
公开(公告)日：1977-07-13
申请号：JP94276
申请日：1976-01-07
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHIYUKI , KOBAYASHI HIROAKI
Abstract: PURPOSE:To form aromatic polyamide films having high tenacity, excellent resistance to heat and consistent quality from an aromatic polyamide that is soluble in an organic solvent and consists mainly of components bearing chlorine containing sustituents on the aromatic rings and a minor proportion of copolymerization components bearing no chlorine substitutents.
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