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公开(公告)号：JPH058287A
公开(公告)日：1993-01-19
申请号：JP16464891
申请日：1991-07-04
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI
Abstract: PURPOSE:To prepare a highly stretched bottle excellent in transparency, mechanical strength and gas barrier properties. CONSTITUTION:A preform is formed of polyester obtained from a dicarboxylic acid compound, a dihydroxy compound and terephthalic acid whose amount is 0.1-1.0 mol.pts. when the total amount of the dicarboxylic acid compound and the dihydroxy compound is 100 mol.pts. This preform is heated to be shrunk and subsequently highly stretched to prepare a polyester bottle.
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公开(公告)号：JPH04239607A
公开(公告)日：1992-08-27
申请号：JP661491
申请日：1991-01-23
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI , TOMITA KUNIO
Abstract: PURPOSE:To provide a method of manufacturing polyethylenenaphthalate which is improved in its anti-blocking property and supplied as a molding raw material stably. CONSTITUTION:The present manufacture of polyethylenenaphthalate is characterized in such a manner that dicarboxylic acid containing 2,6-naphthalene dicarboxylic acid and a hydroxy compound containing ethylene glycol are subjected to polymerization condensation in liquid phase, whereby polyethylenenaphthalate is manufactured, following this, after the polyethylenenaphthalate is molded into chips, by conducting a sharing treatment to the chips, the chip surfaces are made into roughened surfaces.
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公开(公告)号：JPH04234625A
公开(公告)日：1992-08-24
申请号：JP46191
申请日：1991-01-08
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI , TOMITA KUNIO
Abstract: PURPOSE:To obtain a bottle made of saturated polyester having improved stress- cracking resistance by orienting and blow molding a preform made of saturated polyester and irradiating the bottom of the bottle acquired with radiation. CONSTITUTION:Saturated polyester is molded to preform through a means such as known injection molding method, extrusion molding method, etc. The preform is heated up to an orientation proper temperature, and oriented and blow molded. The bottom of a bottle obtained is irradiated with radiation from the bottle-bottom direction, but it is proper that radiation is applied while turning the bottle as the vertical direction of the bottle as an axis on radiation. When a fixed quantity of a crosslinking agent is blended with saturated polyester, the stress-cracking resistance of the bottle acquired is improved. The bottle 1 made of saturated polyester obtained is composed of a mouth plug section 2, an upper shoulder section 3, a drum section 4 and a bottom 5. Electron rays betarays, lambda rays, etc., are used as said radiation.
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公开(公告)号：JPH04223134A
公开(公告)日：1992-08-13
申请号：JP40670290
申请日：1990-12-26
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI , HATAHO SUSUMU
IPC: B29C49/22 , B29C49/08 , B29C49/78 , B29K67/00 , B29L22/00 , B32B27/34 , B32B27/36 , B65D1/02 , B65D37/00 , C08G63/12 , C08G63/20 , C08L77/00
Abstract: PURPOSE:To enable the titled bottle to be scrapped in a folding manner, and give an excellent gas barrier property and pressure resisting strength thereto, and further prevent a taste of liquid contents in it from getting worse by allowing the thickness of a barrel part in a polyester bottle comprising a plug part and a barrel part to be 20-150mum thick, and enabling it to be buckled in the vertical direction during the period of non-filling time. CONSTITUTION:The bottle is made in a shape of having a barrel part 4 below a plug part 2 and a support ring 7, and consists of polyester resin. Or, the barrel part is made in a double-layered structure that is laminated with polyester resin and polyamide resin, or in a multi-layered structure that is polyester resin is laminated with resin selected from copolymerized polyester resin formed of a and dicarboxylic acid constitutional unit, a dihydroxylic compound constitutional unit, and a multi-functional hydroxylic compound constitutional unit having at least three hydroxylic groups. The wall thickness is made 20-150mum and enabled to be buckled in the upper and lower direction during no-filling period.
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公开(公告)号：JPH0387237A
公开(公告)日：1991-04-12
申请号：JP22576489
申请日：1989-08-31
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI
Abstract: PURPOSE:To obtain an economical hollow molding with excellent transparency, molding, and gas barrier by highly drawing a resin composition consisting of polyethylene terephthalate resin and at least a kind of resin composition selected from a specific resin or copolyester group. CONSTITUTION:A hollow molding 1 is formed by highly drawing a resin composi tion consisting of polyethyleneterephthalate resin (A) and at least a kind of (B) selected from polyethylenenaphthalate resin, polyethyleneisophthalate resin or copolyester of terephthalic acid, 2.6-naphthalenedicarbonic acid and ethyleneglycol, and copolyester formed respectively through esterification of terephthalic acid, ethyleneglycol and cyclohexanedimeethanol, or neopentilglycol or diethyleneglycol, and copolyester of terephthalic acid, aliphatic dicarbonxylic acid of 6 - 10 carbon numbers and ethyleneglycol as shown in formula 1 in which the drawing index is 130cm or more.
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Patent Agency Ranking
公开(公告)号：JPH0387236A
公开(公告)日：1991-04-12
申请号：JP22576289
申请日：1989-08-31
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI
IPC: B65D1/00 , B29C49/08 , B29K67/00 , B29L22/00 , B65D1/02 , C08G63/181 , C08G63/183 , C08J5/00
Abstract: PURPOSE:To obtain a hollow molding with excellent transparency, molding property, and0 gas barrier property by highly drawing copolyester through esterification of specific dicarboxylic acid and ethylene glycol. CONSTITUTION:A hollow molding 1 is formed by highyly drawing copolyester of being 0.5 - 1.5 d l/g in its limitiung viscosity (eta) formed through esterification of dicarboxylic acid and ethylene glycol as shown in formula (I) in which the drawing index is 130. Besides, 85 - 99.5mol. % of the dicarboxylic acid is terephthalic acid and 0.5 - 15mol % is aliphatic dicarbonic acid of 6 - 10 carbon numbers.
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公开(公告)号：JPH0354249A
公开(公告)日：1991-03-08
申请号：JP19024889
申请日：1989-07-21
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI , TOMITA KUNIO
Abstract: PURPOSE:To obtain a nonblocking chipped polyester resin composition by mixing PET with a specified copolyester in a specified ratio, melting the mixture, cooling the melt, forming the solid product into chips, roughening the surfaces of the chips and vacuum-drying them. CONSTITUTION:A copolyester resin comprising dicarboxylic acid component units (A) comprising 20-100mol% isophthalic acid component units and 80-0mol% terephthalic acid component units, dihydroxy compound component units (B) comprising 5-90mol% dihydroxyethoxyresorcinol component units and 95-10mol% ethylene glycol component units and 0.05-1pt.mol, per 100pts.mol component A, polyhydroxy compound component units having at least three hydroxyls is produced. 90-60wt.% this resin is mixed with 10-40wt.% polyethylene terephthalate resin, and the mixture is melted. The melt is cooled to form chips, which are agitated under a shearing force to roughen their surfaces, and the roughened chips are dried at a temperature >=100 deg.C in a vacuum to obtain a polyester resin composition.
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公开(公告)号：JPH02233341A
公开(公告)日：1990-09-14
申请号：JP4386989
申请日：1989-02-23
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , HISAMURA NOBUYASU
IPC: B65D1/02
Abstract: PURPOSE:To achieve a drastic improvement in the gas barrier property by producing a bottle from a polyethylene naphthalate resin in such a way that the distribution curves of the X-ray interference strength at a plurality of spots on the circumferential surface in the middle of the drumlike part have specific maximum values. CONSTITUTION:A bottle 1 consists of a mouth part 2, a shoulderlike part 3, a drumlike part 4, a peripheral bottom 5, and a bottom 6. It is observed that, with a probability of not less than 80% at the lowest estimate, the distribution curves of the X-ray interference strength at a plurality of spots on the circumferential surface in the middle of the drumlike part 4 have maximum values in the beta-angle ranges of 0 deg.+ or -20 deg. and 90 deg.+ or -20 deg.. To make such a bottle 1, first a prefoam is obtained from polyethylene naphthalate resin; the prefoam is made in a short form, with the diameter also reduced as occasion demands; the prefoam is so highly stretched as to bring the draw index to 130cm or more, and then subjected to blow molding. By subjecting the resulting prefoam to biaxial stretching and to molding by a molding machine a bottle 1 having a drastically improved gas-barrier property to oxygen or carbon dioxide is obtainable. The product is excellent also in heat resistance, transparency, and mechanical strength.
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公开(公告)号：JPH02219735A
公开(公告)日：1990-09-03
申请号：JP3784689
申请日：1989-02-17
Applicant: MITSUI PETROCHEMICAL IND
Inventor： YAMAMOTO KAZUTO , NIIMI KOJI
IPC: B65D1/02
Abstract: PURPOSE:To obtain a bottle remarkably excellent in gas barrier capability having transparency and heat resistance by a method wherein the bottle is made of polyethylene naphthalate resin and carbon dioxide gas transmission coefficient and average thickness coefficient at the center of a cylinder except a bottle mouth are specified. CONSTITUTION:A bottle is made of polyethylene naphthalate resin wherein carbon dioxide gas transmission coefficient Pc defined by Pc=PXf (where P refers to carbon dioxide transmission coefficient (cc/day.atm) of the whole bottle, and f4=S/V(cm ) where S is an inner surface area of an oriented bottle except that at the bottle mouth, and V refers to an inner volume of the oriented bottle except that at the bottle mouth) is 0.13 cc.cm/day.atm or less, preferably 0.12cc.cm/day.atm or less, more preferably 0.10cc.cm/day.atm or less. In addition, the average thickness coefficient tc at the center of a body except the bottle mouth defined by tc=tXfX10 (where t refers to the average thickness (mm) at the center of the body except the bottle mouth and f refers to the same as the above) is 0.2 or less, preferably 0.18 or less.
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公开(公告)号：JPH01167365A
公开(公告)日：1989-07-03
申请号：JP32776387
申请日：1987-12-23
Applicant: MITSUI PETROCHEMICAL IND
Inventor： SAKAI HIDENORI , ISHIWATARI KAZUO , YAMAMOTO KAZUTO
Abstract: PURPOSE:To obtain the title resin composition having excellent thermosetting properties, by blending a specific amount of a curing accelerator selected from metallic salts of higher fatty acids, complexamines and phosphoric acid based compounds with a thermoplastic polyester resin and phenoxy resin. CONSTITUTION:A resin composition obtained by blending 100 pts.wt. total amount of (A) 98-5wt.% thermoplastic polyester, preferably polyethylene terephthalate, polybutylene terephthalate or polycarbonate and (B) 2-95wt.% phenoxy resin, such as polyhydroxy polyether expressed by the formula, having preferably 0.3-2dl/g intrinsic viscosity and 30-120 deg.C glass transition temperature with (C) 0.01-5 pts.wt. one or more. curing accelerators selected from metallic salts of higher fatty acids (preferably lithium stearate), complexamines (preferably disodium ethylenediaminetetraacetate) and phosphoric acid based compounds (preferably phenylsulfonic acid).
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