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公开(公告)号：JPH08253662A
公开(公告)日：1996-10-01
申请号：JP5554895
申请日：1995-03-15
Applicant: TORAY INDUSTRIES
Inventor： MORITA TORU , SASAKI TOSHIHIRO , SUZUKI MASARU
Abstract: PURPOSE: To obtain the subject composition free from the crystallization of a polyester oligomer onto the surface of a film and useful for producing the film excellent in running properties by compounding an aromatic polyester with a specific sulfonic acid lithium salt. CONSTITUTION: This composition is obtained by compounding an aromatic polyester composed mainly of (A) an aromatic dicarboxylic acid and (B) an alkylene glycol with (C) 0.1-10wt.% of a lithium salt of a sulfonic acid of the formula RXSO3 Li (R is a 5-30C normal alkyl; X is an aromatic group). Further, the composition is preferably compounded with (D) particles insoluble in the polyester, having an average particle diameter of 0.01-2μm and substantially spherical (e.g. colloidal silica or spherical alumina) in an amount of 0.1-10.0wt.% based on the polyester. A film, which has polyester oligomers crystallized on its surface, having diameters of >=0.2μm, of after 2-hr aging at 120 deg.C, can be obtained by using the composition.
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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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公开(公告)号：JPH08157617A
公开(公告)日：1996-06-18
申请号：JP29958694
申请日：1994-12-02
Applicant: TORAY INDUSTRIES
Inventor： OKASAKA HIDESADA , MORITA TORU , SASAKI TOSHIHIRO
Abstract: PURPOSE: To prepare the subject film suitable as a substrate film for a magnetic recording medium requiring fine and uniform surface projections, not causing occurrence of defect of foreign matters resulting from surface precipitate and contamination with contact materials, containing an amount of a low-molecular weight substance precipitated on the surface equal to or smaller than a specific amount. CONSTITUTION: This film is a polyethylene-2,6-naphthalate film containing low-molecular weight substance precipitated on the surface when heated at 170 deg.C for three hours and contains wax having 20-250 deg.C melting point. This film, for example, is obtained by heat-treating polyethylene-2,6-naphthalate granules in a gas atmosphere of noncirculating nitrogen under normal pressure at 150-250 deg.C and making it into a film.
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公开(公告)号：JPH05230199A
公开(公告)日：1993-09-07
申请号：JP9448192
申请日：1992-04-14
Applicant: TORAY INDUSTRIES
Inventor： MORITA TORU , OKASAKA HIDESADA
Abstract: PURPOSE:To efficiently produce the subject polyester having a high softening point and not containing a foreign material by depolymerizing an aromatic polyester in an alkylene glycol, subsequently separating insoluble particles using a specified centrifugation separator and then carrying out polycondensation again. CONSTITUTION:An aromatic polyester is depolymerized by using an alkylene glycol component in an amount of 0.1 to 5.0mol based on 1mol acid component constituting the aromatic polyester. The resultant aromatic dicarboxylic acid glycol ester and low-molecular polymers are melted at 120 to 250 deg.C and the molten material is charged into a centrifugation separator equipped with plural discs in the inside. Polyester-insoluble particles are separated by centrifugation in a condition of 1X10 to 2X10 G centrifugal force and polycondensation is then carried out in the presence of a polycondensation catalyst such as a glycol- soluble antimony compound. Thus, the objective polyester can be obtained.
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公开(公告)号：JPH0525293A
公开(公告)日：1993-02-02
申请号：JP18475291
申请日：1991-07-24
Applicant: TORAY INDUSTRIES
Inventor： AOYAMA MASATOSHI , MORITA TORU , UEDA TOMOAKI
IPC: B29C55/12 , B29K67/00 , B29L7/00 , C08G63/181 , C08G63/189 , C08J5/18 , C08L67/02 , G11B5/73 , G11B5/733
Abstract: PURPOSE:To provide a biaxially oriented polyethylene 2,6-naphthalate film excellent in modulus of elasticity and tear strength which is useful for magnetic recording and electrical insulation. CONSTITUTION:The objective polyethylene 2,6-naphthalate film contains main recurring units of ethylene 2,6-naphthalate blended with compd. having at least 3 ester-forming functional groups per molecule.
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Patent Agency Ranking
公开(公告)号：JPH03287624A
公开(公告)日：1991-12-18
申请号：JP9001490
申请日：1990-04-04
Applicant: TORAY INDUSTRIES
Inventor： UEDA TOMOAKI , MORITA TORU , NAGAHAMA AKIHIKO
IPC: C08G63/78
Abstract: PURPOSE:To produce a polyester composition having a low content of coarse particles by forming a polyester by the esterification and polycondensation of a dicarboxylic acid component based on an aromatic dicarboxylic acid with a glycol component and adding particles inert to the polyester under specified conditions during the course of its formation. CONSTITUTION:A process for producing a polyester by the esterification or transesterification of a dicarboxylic acid component (esterifiable derivative thereof) based on an aromatic dicarboxylic acid (e.g. dimethyl terephthalate) and a glycol component (e.g. ethylene glycol) and the subsequent polycondensation, wherein particles inert to the polyester (e.g. titanium dioxide particles) slurried in a glycol are continuously or intermittently added to the reaction system, while the glycol component is evaporated so that the ratio of the glycol component to the acid component in the reaction system may be in the range of 1.2-4 during the period from the substantial completion of the esterification or transesterification to the time when the intrinsic viscosity reaches 0.2 as a result of the progress of the polycondensation.
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公开(公告)号：JPH02298512A
公开(公告)日：1990-12-10
申请号：JP11996989
申请日：1989-05-12
Applicant: TORAY INDUSTRIES
Inventor： MORITA TORU , YOSHIDA MINORU , UEDA TOMOAKI
Abstract: PURPOSE:To obtain a polyester with a low content of a cyclic compound and hardly any reduction or increase in viscosity by heat-treating a polyester in a specific inert gas atmosphere without flowing the inert gas. CONSTITUTION:A polyester, such as polyethylene terephthalate, is heat-treated at a temperature within the range of the melting point thereof to 80 deg.C lower than the melting point in an atmosphere of an inert gas (preferably nitrogen) with .
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公开(公告)号：JPS6268815A
公开(公告)日：1987-03-28
申请号：JP20622085
申请日：1985-09-20
Applicant: TORAY INDUSTRIES
Inventor： YOSHIDA MINORU , MORITA TORU , OKASAKA HIDESADA
IPC: C08G63/00 , C08G63/12 , C08G63/68 , C08G63/682
Abstract: PURPOSE:To obtain the titled polyester, having a high polymerization degree and rigidity and improved heat resistance and suitable for fibers, etc., by adding a metal compound soluble in a glycol to a specific compound and glycol. CONSTITUTION:A polyester obtained by mixing (A) a compound expressed by formula I (R1 and R2 are 1-4C alkyl) as a main acid component with (B) a glycol, e.g. ethylene glycol, adding (C) a metal compound, e.g. zinc acetate, soluble in the component (B)thereto so as to satisfy formula II [M is the total number of mol of the component (C) based on 10 g polyester] and further adding (D) a phosphoric acid compound, e.g. phosphoric acid, in an amount within the range expressed by formula III (P is the number of mol of the phosphoric acid compound based on 10 g polyester) to the resultant mixture and polycondensing the resultant mixture.
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公开(公告)号：JPS61197627A
公开(公告)日：1986-09-01
申请号：JP3967085
申请日：1985-02-28
Applicant: TORAY INDUSTRIES
Inventor： MORITA TORU , YOSHIDA MINORU , WATANABE KATSUMI
Abstract: PURPOSE:To improve the rigidity, etc., of a polyester, by adding specified particles, a metallic compound and a phosphorus compound to the reaction system in the production of the polyester from 1,2-bis(2-chlorophenoxy)ethane-4,4'-dicarboxylic acid and a glycol. CONSTITUTION:A polyester is produced by reacting 1,2-bis(2-chlorophenoxy) ethane-4,4'-dicarboxylic acid (alkyl ester) with 1.5-10mol, per mol of the acid component, of a glycol. At this time, 0.005-5wt%, based on the obtained polyester, inorganic particles containing an element of Group II, III or IV of the periodic table of the elements (e.g., alumina or calcium carbonate) are added to the reaction system. By adding a glycol-soluble metal compound M (e.g., magnesium acetate) and a phosphorus compound P (e.g., phosphoric acid or trimethyl phosphate) at a molar ratio of 0.3
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公开(公告)号：JPH07126502A
公开(公告)日：1995-05-16
申请号：JP27386593
申请日：1993-11-01
Applicant: TORAY INDUSTRIES
Inventor： OKASAKA HIDESADA , MORITA TORU , SASAKI TOSHIHIRO
Abstract: PURPOSE:To obtain polyester composition which gives a film excellent in traveling characteristics and abrasion resistance by incorporating specified polyimide particles into a polyester. CONSTITUTION:A polyester comprising, e.g. a homopolyester such as polyethylene terephthalate or a copolyester composed mainly thereof is mixed with polyimide particles having a mean particle diameter of 0.01-3mum and a strength (S10), at 10% deformation under an external force, of 3-30kgf/mm . Examples of the polyimide include those having a structure of any one of formulas I to V. It can easily be produced in particulate for by a known process; i.e. a tetracarboxylic acid anhydride is reacted with a diamine in an appropriate organic solvent to synthesize a polyimide precursor comprising a polyamic acid, and the obtained product is precipitated in a poor solvent for the polyamic acid, such as methanol, to form particles. The amount of the polyimide particles to be incorporated should be 0.01-5 wt.% based on the polyester.
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