-
公开(公告)号：JPH1160756A
公开(公告)日：1999-03-05
申请号：JP21744597
申请日：1997-08-12
Applicant: TORAY INDUSTRIES
Inventor： TSUNASHIMA KENJI , SAKAMOTO JUN , UMETSU HIDEYUKI
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester film excellent in productivity such as extrusion characteristics, and further excellent in uniformity of thickness, gas-barrier properties, transparency or the like by using a liquid crystal polyester having a crystal melting point not larger than a specific temperature. SOLUTION: This polyester film preferably having .24 hr.sheet oxygen permeability is obtained by melt-forming a liquid crystal polyester (the liquid crystal polyester is a polyester having a mesogenic group, showing an optical anisotropy in a molten state, and especially containing 40-90 wt.% p-hydroxybenzoic acid component as a main mesogen and preferably also containing 4,4'-dihydroxybiphenyl) having
-
公开(公告)号：JPH06228418A
公开(公告)日：1994-08-16
申请号：JP1564993
申请日：1993-02-02
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SAKAMOTO JUN , SASAKI TOSHIHIRO
Abstract: PURPOSE:To obtain a composition providing a film having a surface hardly injured, showing excellent scratching resistance and wear resistance by blending an aromatic polyester with a fluorine compound and inert particles having specific particle diameters, respectively. CONSTITUTION:The composition comprises (A) 0.01-2 pts.wt. of fluorine compound (preferably calcium fluoride) having 0.002-0.2mum average diameter of primary particles, (B) 0.01-5 pts.wt. of inert particles having 0.2-1mum average diameter of primary particles and (C) 99.98-93 pts.wt. of an aromatic polyester (preferably polyethylene terephthalate). The component B is preferably titanium oxide in the case of inorganic particles and preferably a divinylbenzene homopolymer in the case of organic particles. The component A and the inert inorganic particles are added to the polyester reaction system by a method of supplying them in a state of a glycol slurry and the inert organic particles are incorporated with the polyester in a shape of a slurry using water, etc.
-
公开(公告)号：JPH06157877A
公开(公告)日：1994-06-07
申请号：JP30842392
申请日：1992-11-18
Applicant: TORAY INDUSTRIES
Inventor： SAKAMOTO JUN , YOSHIDA MINORU , SUZUKI MASARU
Abstract: PURPOSE:To obtain a resin composition useful for obtaining a film excellent in scratch and abrasion resistances by mixing a thermoplastic polyester with a specified calcium carbonate and phosphorus and specifying the terminal carboxyl concentration. CONSTITUTION:This resin composition is prepared by mixing a thermoplastic polyester (e.g. polyethylene terephthalate) with 0.05-10wt.% vateritic calcium carbonate surfacetreated with a polycarboxylic acid compound (e.g. sodium polyacrylate) and having a mean particle diameter of 0.01-5mum and 40-250ppm of phosphorus (for example, one added in the form of trimethyl phosphate) and has a terminal carboxyl concentration in the range of 10-100 equivalents per 10 g of the polymer.
-
公开(公告)号：JPH05163371A
公开(公告)日：1993-06-29
申请号：JP33017291
申请日：1991-12-13
Applicant: TORAY INDUSTRIES
Inventor： SAKAMOTO JUN , YOSHIDA MINORU , SUZUKI MASARU
Abstract: PURPOSE:To provide the title film excellent in the resistance to scratch and abrasion. CONSTITUTION:The title film contains zirconium oxide particles. In the film, the particles are dispersed in the form of aggregates having a ratio of the length parallel to the direction of film length to the length vertical to the film surface of 0.5-0.6.
-
公开(公告)号：JPH03172319A
公开(公告)日：1991-07-25
申请号：JP31260889
申请日：1989-11-30
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SAKAMOTO JUN , UEDA TOMOAKI
Abstract: PURPOSE:To obtain the subject polymer having excellent abrasion resistance, transportability and surface properties and suitable for base film of magnetic recording medium, film for electrical use, fiber, etc., by adding specific inert inorganic particles before polymerization. CONSTITUTION:(A) A dispersion is produced by dispersing (i) inert inorganic particles (e.g. aluminum oxide) exhibiting positive zeta-electric potential in pure water and having an average particle diameter of 10-3,000mmu and (ii) a glycol compound used as a raw material (e.g. ethylene glycol) in (iii) a polymeric compound having parameters expressed by formula (delta1 is solubility parameter of the polymeric compound; delta2 is solubility parameter of the polyester) and having acidic functional group on terminal and/or side chain. The objective polymer having a carboxyl terminal group content of >=20eq/t can be produced by polymerizing (B) an aromatic dicarboxylic acid and glycol after the addition of 0.01-5.0 pts.wt. of the dispersion A to the system based on 100 pts.wt. of the component B.
-
Patent Agency Ranking
公开(公告)号：JPH0370768A
公开(公告)日：1991-03-26
申请号：JP20729789
申请日：1989-08-09
Applicant: TORAY INDUSTRIES
Inventor： SAKAMOTO JUN , YOSHIDA MINORU , UEDA TOMOAKI
Abstract: PURPOSE:To obtain a polyester composition giving a molded article having excellent slipperiness, abrasion resistance, etc., and suitable for fiber, film, etc., by using composite inert particles having a specific shape as a component. CONSTITUTION:The objective polyester composition is produced by compounding a polyester with 0.005-10wt.% (preferably 0.01-3wt.%) of composite inert particles having an average particle diameter of 0.05-5mum (preferably 0.1-2mum) and produced e.g. by coating a core particle charged with positive or negative charge (e.g. silica, titanium oxide or calcium carbonate) with fine particles (e.g. silica or alumina) charged with opposite charge and having an average particle diameter corresponding to 1/(1,000-10) [preferably 1/(500-20)] of the diameter of the core particle. The ratio of the coating thickness to the diameter of the core particle is 1/1000-10, preferably 1/500-1.
-
117.发明专利
公开(公告)号：JPH0280455A
公开(公告)日：1990-03-20
申请号：JP23433188
申请日：1988-09-19
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SAKAMOTO JUN , UEDA TOMOAKI
Abstract: PURPOSE:To obtain the title composition useful for obtaining a film or a fiber excellent in lubricity, abrasion resistance and transparency by homogeneously dispersing spherical kaolinite particles in a thermoplastic polyester. CONSTITUTION:Desirably, 0.005-10wt.%, based on the polyester, porous synthetic spherical kaolinite particles having a mean particle diameter of, desirably, 0.01-5.0mum and a volume shape factor as defined by the equation (wherein V is the volume of a single particle; and D is the sphere equivalent diameter of a particle)
-
公开(公告)号：JPH0238444A
公开(公告)日：1990-02-07
申请号：JP18938988
申请日：1988-07-28
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SAKAMOTO JUN , UEDA TOMOAKI
Abstract: PURPOSE:To obtain the title composition which can give a film or a fiber improved in lubricity and abrasion resistance by adding alumina particles to a thermoplastic polyester. CONSTITUTION:The title composition is obtained by adding 0.005-10wt.% alumina particles (A) which is desirably slurried in a glycol (a), has a mean particle diameter of 0.01-5.0mum and a volume shape factor phi of the formula (wherein v is the volume of a single particle, and D is the equivalent diameter of an equal volume particle)
-
公开(公告)号：JPH01247450A
公开(公告)日：1989-10-03
申请号：JP7421088
申请日：1988-03-28
Applicant: TORAY INDUSTRIES
Inventor： SAKAMOTO JUN , YOSHIDA MINORU , UEDA TOMOAKI
Abstract: PURPOSE:To obtain a composition which can give a film or a fiber excellent in lubricity and abrasion resistance, by dispersing cerium oxide particles in a thermoplastic polyester. CONSTITUTION:A thermoplastic polyester composition is formed by homogeneously and finely dispersing cerium oxide particles in a thermoplastic polyester. Although the cerium oxide particles used may be particles of cerium (III) oxide (Ce2O3) or cerium (IV) oxide (CeO2), CeO2 particles are more desirable. The mean particle diameter of the cerium oxide particles used is desirably 0.1-3.0Xm when it is used in a film or a fiber. When this diameter is below 0.01mum, the lubricity of a molding is not sufficient, while a diameter above 5mum is undesirable because large protrusions are formed on the molding. The content of the cerium oxide is desirably 0.01-5wt.% based on the polyester.
-
公开(公告)号：JPH01223156A
公开(公告)日：1989-09-06
申请号：JP4787588
申请日：1988-03-01
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , SAKAMOTO JUN , UEDA TOMOAKI
IPC: B29C55/12 , B29K67/00 , B29L7/00 , C08J5/18 , C08K3/04 , C08K3/22 , C08K3/26 , C08K3/34 , C08K7/18 , C08L67/00 , C08L67/02
Abstract: PURPOSE:To obtain the title composition capable of giving formed products of excellent slipperiness and wear resistance including biaxially oriented films suitable for e.g., magnetic tapes, by incorporating a polyester with each specified amount of each specific silicone resin particles and inert inorganic particles. CONSTITUTION:The objective composition can be obtained by incorporating a polyester with an intrinsic viscosity of 0.4-1.0 with (A) 0.005-10wt.% (pref. 0.01-5wt.%) of silicone resin particles with a mean size of 0.01-5mum (pref. 0.1-2mum) of which a structural unit of the formula [R1 is CnH2n-1 (n is 1-10) or phenyl] accounts for >=10mol.% (pref. >=50mol.%) and (B) 0.005-10wt.% (pref. 0.01-5wt.%) of an inert inorganic particles (e.g., talc, caolin, calcium carbonate) with a mean size of 0.01-5mum (pref. 0.1-2mum).
-
-
-
-
-
-
-
-
-
Search Results
120
records
(took 0.026 seconds)
