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公开(公告)号：JPH05163370A
公开(公告)日：1993-06-29
申请号：JP35117291
申请日：1991-12-13
Applicant: TORAY INDUSTRIES
Inventor： YAMAOKA MIDORI , NOGUCHI YUKIO , UEDA TOMOAKI
Abstract: PURPOSE:To prepare the title film having uniform surface projections with few coarse projections and excellent slipperiness, running properties, etc., by compounding poly-p-phenylene sulfide with two kinds of inert fine particles each in a specified amt. CONSTITUTION:Poly-p-phenylene sulfide is compounded with 0.05-2wt.% first component comprising inert fine particles A having a mean particle diameter ratio (major diameter to minor diameter) of 1.0-2.5, a mean particle diameter of 0.01-2.0mum, and a relative standard deviation of particle diameter expressed by equations I and II [wherein Di is an equivalent diameter (mum) of equal-area circle of each particle; D is a mean equivalent diameter (mum) of equal-area circle; and n is the number of particles] of 1.0 or lower (e.g. vaterite CaCO3), and 0.01-1wt.% second component comprising inert fine particles B having a mean particle diameter ratio of 1.0-2.5 and a mean particle diameter of 1.5-3.0 times that of the particles A (e.g. vaterite CaCO3).
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公开(公告)号：JPH05125186A
公开(公告)日：1993-05-21
申请号：JP29316691
申请日：1991-11-08
Applicant: TORAY INDUSTRIES
Inventor： KIDA KENJI , UEDA TOMOAKI
IPC: C08G75/02 , C08G75/0295 , C08G75/06
Abstract: PURPOSE:To produce a polyphenylene sulfide containing a small amount of low-molecular weight substances to cause cap stain, little in cap stain and excellent-in-film-forming properties in extrusion. CONSTITUTION:A polyphenylene sulfide having =200 deg.C to
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公开(公告)号：JPH05111958A
公开(公告)日：1993-05-07
申请号：JP27790291
申请日：1991-10-24
Applicant: TORAY INDUSTRIES
Inventor： NOGUCHI YUKIO , KIDA KENJI , UEDA TOMOAKI
Abstract: PURPOSE:To equalize the height of surface projections and improve sliding properties and dielectric strength by laminating a resin mainly comprising two kinds of poly-p-phenylene sulfide having different characteristic values and forming a biaxially oriented laminated film. CONSTITUTION:Poly-p-phenylene sulfide(PPS) resin powder having the characteristic value of melting viscosity of 1000-50000 poise at 300 deg.C at a shear rate of 200sec is melt-extruded, thus preparing a pellet A. On the other hand, PPS resin povyder having melting viscosity of half or one twentyth of the melting viscosity of the pellet A and a temperature-drop crystallization temperature of 150-250 deg.C is melt-extruded, thus preparing a pellet B. The pellets A, B are laminated under a molten state in a flow path between an extruder and a mouthpiece, thus preparing a PPS laminated film. The PPS laminated film is biaxially oriented by magnification, where the pellet A is orientated sufficiently, simultaneously or successively in length and breadth at a fixed temperature, and thermally treated in constant length at a fixed temperature for a specified time, thus acquiring a biaxially oriented PPS laminated film.
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公开(公告)号：JPH04103624A
公开(公告)日：1992-04-06
申请号：JP22288790
申请日：1990-08-23
Applicant: TORAY INDUSTRIES
Inventor： SAKAMOTO JUN , YOSHIDA MINORU , UEDA TOMOAKI
IPC: C08G63/78
Abstract: PURPOSE:To obtain the subject resin, excellent in affinity and adhesion of particles to a polyester and useful as magnetic tapes, etc., by adding particles having the surface treated with a specific aromatic compound to a system before completing polycondensing reaction. CONSTITUTION:A dicarboxylic acid containing an aromatic dicarboxylic acid as a principal acid component and an ester-forming derivative thereof and glycol are used to produce a polyester. In the process, particles having the surface treated with an aromatic compound expressed by the formula [R1 is sulfonic acid group or alkali metallic salt of the sulfonic acid group, carboxyl group or alkali metallic salt of the carboxyl group; R2 is sulfonic acid group or alkali metallic salt of the sulfonic acid group, carboxyl or alkali metallic salt of the carboxyl or H; R3 and R4 are COO(CH2)1OH, COOCmH2m+1 or CnH2n+1 ((l), (m) and (n) are 0-20)] are added to a system before completing the polycondensing reaction to afford the objective composition.
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公开(公告)号：JPH0453866A
公开(公告)日：1992-02-21
申请号：JP16311290
申请日：1990-06-21
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SASAKI TOSHIHIRO , UEDA TOMOAKI
Abstract: PURPOSE:To obtain the title composition suitable for obtaining film or fiber excellent in abrasion resistance and desirable especially for a magnetic tape repeatedly used under friction by mixing a thermoplastic polyester with amorphous alumina particles. CONSTITUTION:Amorphous alumina particles (desirably particles having a secondary particle diameter of 5.0mum or below and comprising primary particles of a specific surface area of 10m /g or above) are added to a thermoplastic polyester (desirably one based on polyethylene terephthalate). The amount of the amorphous alumina particles added is desirably 0.01-30 pts.wt. per 100 pts.wt. thermoplastic polyester. The obtained polyester composition can be molded into film or fiber of good abrasion resistance and can desirably be used for a magnetic tape repeatedly used under friction.
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Patent Agency Ranking
公开(公告)号：JPH03281565A
公开(公告)日：1991-12-12
申请号：JP8399090
申请日：1990-03-29
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SAKAMOTO JUN , UEDA TOMOAKI
Abstract: PURPOSE:To provide a thermoplastic polyester composition having good compatibility between the polyester and the calcium carbonate particles, having excellent abrasion resistance and suitable as films, fibers, especially magnetic tapes, by compounding the calcium carbonate particles subjected to a specific surface treatment. CONSTITUTION:A thermoplastic polyester preferably mainly comprising polyethylene terephthalate is compounded with particles which are prepared by coating the surfaces of calcium carbonate particles with calcium phosphate and subsequently with an acrylic acid-acrylate ester copolymer or a partial metal salt or ammonium salt thereof.
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公开(公告)号：JPH0376746A
公开(公告)日：1991-04-02
申请号：JP21569489
申请日：1989-08-21
Applicant: TORAY INDUSTRIES
Inventor： KIDA KENJI , SASAKI TOSHIHIRO , UEDA TOMOAKI
IPC: C08K5/42 , C08G63/688 , C08J5/18 , C08L67/00 , C08L67/02
Abstract: PURPOSE:To prepare a polyester compsn. excellent in the adhesive properties, transparency, antistatic properties, and mechanical properties by compounding a specified amt. of an org. sulfonate salt into a polyester obtd. from a specific acid component and a diol component comprising an alkylene glycol. CONSTITUTION:100 pts.wt. polyester obtd. from an acid component comprising terephthalic acid, an arom. dicarboxylic acid having a metal sulfonate group (e.g. 5-sodiumsulfoisophthalic acid) and a 4-20C aliph. dicarboxylic acid (e.g. adipic acid) and a diol component comprising an alkylene glycol (e.g. ethylene glycol) is compounded with 0.01-6 pts.wt. org. sulfonate salt (e.g. sodium dodecylbenzenesulfonate).
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公开(公告)号：JPH0343447A
公开(公告)日：1991-02-25
申请号：JP17886289
申请日：1989-07-10
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SASAKI TOSHIHIRO , UEDA TOMOAKI
Abstract: PURPOSE:To obtain a polyester composition, having the surface with homogenous fine unevennesses, suitable for providing films and fibers excellent in abrasion resistance and useful as magnetic tapes, etc., by blending specific aluminum oxide particles containing a sulfur compound with a polyester. CONSTITUTION:A polyester composition obtained by blending 0.05-10wt.%, preferably 0.1-5wt.% aluminum oxide particles, containing a sulfur compound in an amount of 0.01-5wt.%, preferably 0.01-2wt.% expressed in terms of sulfur and having 5-5000mmu average primary particle diameter with a polyester (e.g. polyethylene terephthalate).
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公开(公告)号：JPH0317123A
公开(公告)日：1991-01-25
申请号：JP15107989
申请日：1989-06-14
Applicant: TORAY INDUSTRIES
Inventor： SASAKI TOSHIHIRO , YOSHIDA MINORU , UEDA TOMOAKI
Abstract: PURPOSE:To obtain the title polyester useful for e.g. films free from coarse asperities with excellent surface characteristics by adding, in the form of a slurry, a phosphorus compound, alkali metal compound and alumina particles to the polymerization system prior to completion of the polymerization. CONSTITUTION:The objective polyester can be obtained by adding, in the form of a slurry, 0.01-40 pts.wt., based on 100 pts.wt. of the alumina, of (A) a combination of a phosphorus compound and an alkali metal compound and/or (B) an alkali metal salt of a phosphorus compound and (C) 0.01-3.0 pts.wt., based on 100 pts.wt. of the final polyester, of alumina particles 5-500mum in average size to the polymerization system prior to completion of the polymerization.
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公开(公告)号：JPH0297524A
公开(公告)日：1990-04-10
申请号：JP24870988
申请日：1988-09-30
Applicant: TORAY INDUSTRIES
Inventor： MORITA TORU , UEDA TOMOAKI
IPC: C08G63/78
Abstract: PURPOSE:To prepare a polyester for compounding which can be made highly conductive in melt forming of film by adding an alkali metal compd., a glycol, a magnesium or manganese compd. and a phosphorus compd. in a specified manner to a reaction product wherein esterification has been completed. CONSTITUTION:After substantially completing esterification in producing a polyester form an arom. dicarboxylic acid (e.g., terephthalic acid) and a glycol (e.g., ethylene glycol), 1-40mol, pref. 2-30mol, (based on 10 g of said polyester) of a glycol-sol. alkali metal compd. (e.g., lithium acetate) and 0.05-0.8mol (based on 1mol of the total acid component constituting said polyester) of the glycol are added simultaneously. Then, a magnesium compd. (e.g., magnesium acetate) or manganese compd. (e.g., manganese acetate) and a phosphorus compd. (e.g., trimethyl phosphate) are added to complete the polycondensation. Quantities of a addition of said magnesium or manganese compd. (M), said phosphorus compd. (P) and said alkali metal compd. (A) (each is based on 10 g of said polyester) are such that they satisfy 20
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