公开(公告)号：JPH0847979A

公开(公告)日：1996-02-20

申请号：JP18490194

申请日：1994-08-05

Applicant: MITSUI PETROCHEMICAL IND

Inventor： HAMA TAKASHI ,  HATA ISAO

IPC: B65D81/30 ,  B29C49/08 ,  B29D22/00 ,  B29K67/00 ,  B29L22/00 ,  C08L67/00 ,  C08L67/02

Abstract: PURPOSE:To provide a biaxially stretched bottle made of polyester excellent in heat resistance, transparency and ultraviolet barrier properties, reduced in the adsorption quantity of a taste component and an aroma component and possible to re-fill. CONSTITUTION:A biaxially stretched bottle made of polyester possible to re-fill is formed from 95-60 pts.wt. of polyethylene terephthalate [A] and 40-50 pts.wt. of polyethylene naphthalate (the sum total of [A] and [B]; 100 pts.wt.) and characterized by that stretching magnification is 12 times or less and the thickness of a body part is 600-900mum. The body part of the bottle has a haize value of 5% or less and the ultraviolet transmissivity thereof is pref. 60% or less and the methanol adsorption quantity thereof is pref. 1800ppm and the p-xylene adsorption quantity thereof is pref. 120ppm or less.

公开(公告)号：JPH0827258A

公开(公告)日：1996-01-30

申请号：JP16149294

申请日：1994-07-13

Applicant: MITSUI PETROCHEMICAL IND

Inventor： TAKAHASHI KOJI ,  HATA ISAO

IPC: C08G63/183 ,  C08G63/78 ,  C08G63/80

Abstract: PURPOSE:To produce a polyester resin having a very low content of formaldehyde. CONSTITUTION:This method for production of a polyester resin includes (A) a liquid phase polycondensation process for synthesizing (a) a polyester resin by conducting a liquid phase polycondensation reaction between a dicarboxylic acid and a dihydroxy compound, (B) a preliminary crystallization process for keeping (a) the synthesized polyester resin in an inert gas atmosphere of = the crystallization temperature determined under a temperature rising condition and

公开(公告)号：JPH10101051A

公开(公告)日：1998-04-21

申请号：JP25503296

申请日：1996-09-26

Applicant: MITSUI PETROCHEMICAL IND

Inventor： OIKAWA HIDEO ,  HATA ISAO

IPC: B29C49/08 ,  B29C49/64 ,  B29K67/00 ,  B29L22/00 ,  B65D1/02 ,  C08J5/00

Abstract: PROBLEM TO BE SOLVED: To hold excellent transparncy and to prevent deformation caused by filling a heated drink from occurring by making degree of crystallinity of a trunk part measured by means of X-rays analysis at a specified range and making degree of orientation of non-crystallized part of the trunk part measured by using a fluorescence photometer at a specified value or smaller. SOLUTION: Degree of crystallinity of a trunk part of a bottle measured by means of X-rays analysis is made in a range of 25-35%, pref. 26-32%. In addition, degree of orientation of non-crystallized part of the trunk part measured by using a fluorescence photometer is made to be at most 0.14, pref. in a range of 0.10-0.12. When each characteristic exists in this range, enough heat resistance can be ensured on the trunk part of the bottle. At the same time, even when a heated drink, etc., are filled into the bottle, as ratios of deformation, expansion and shrinkage are small, deformation of the trunk part of the bottle can be kept small. In addition, a bottle with excellent transparency can be obtd.

公开(公告)号：JPH09156626A

公开(公告)日：1997-06-17

申请号：JP5206696

申请日：1996-03-08

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KASHIWA HIDENORI ,  HATA ISAO ,  NAKAMACHI KOJI ,  TSUGAWA MICHIO ,  HATAHO SUSUMU

IPC: B65D1/02 ,  C08L67/00 ,  C08L67/02

Abstract: PROBLEM TO BE SOLVED: To suppress the deformation of a neck part and a bottom part of a bottle to be small when the filled contents are heated and sterilized by forming a self-standing bottle of the polyester composition in which the prescribed quantity of polyester and polyester elastomer are blended. SOLUTION: In manufacturing a bottle in which carbonated beverage is filled and heating and sterilization is performed, the polyester composition formed of 97-99.99wt.% polyester and 0.01-3wt.% polyester elastomer is used. When the bottle 1 is tested in a hot bath in which the bottle is immersed in the hot bath of 70 deg.C for one hour under the condition that the beverage with carbon dioxide of 2.5 gas volume at 23 deg.C is filled and the bottle is sealed, the condition that the dimensional change in the height direction of the bottle is =10 deg..

公开(公告)号：JPH08244133A

公开(公告)日：1996-09-24

申请号：JP5011695

申请日：1995-03-09

Applicant: MITSUI PETROCHEMICAL IND

Inventor： KASHIWA HIDENORI ,  HATA ISAO ,  TSUGAWA MICHIO ,  HATAHO SUSUMU ,  NAKAMACHI KOJI

IPC: B29C49/08 ,  B29C49/64 ,  B29D22/00 ,  B29K67/00 ,  C08L67/00 ,  C08L67/02

Abstract: PURPOSE: To hold the self-supporting properties of a bottle without deforming the bottle even when the bottle filled with a carbonated beverage in a hermetically state is heated and sterilized by satisfying specified conditions when a bottle made of a polyester compsn. composed of polyester containing rosin or a derivative thereof in a specific amt. and filled with a carbonated beverage is subjected to a hot bath test in a hermetically sealed state. CONSTITUTION: A bottle 1 is composed of a polyester compsn. consisting of 97-99.99wt.% of polyester and 0.01-3wt.% of rosin or a derivative thereof and, when a hot bath test immersing the bottle filled with carbonated beverage of 2.5 gas vol. at 23 deg.C in a hot bath of 70 deg.C in a hermetically sealed state is performed, the bottle satisfies conditions such that the dimensional change rate in the height direction of the bottle filled with a carbonated beverage before and after the hot bath test is 5% or less and the dimensional change rate in the body diameter direction thereof is 5% or less and the falling angle of the bottle after the hot bath test is 10 deg. or more.

公开(公告)号：JPH08165413A

公开(公告)日：1996-06-25

申请号：JP31305794

申请日：1994-12-16

Applicant: MITSUI PETROCHEMICAL IND

Inventor： TAKAHASHI KOJI ,  HATA ISAO

IPC: C08L23/26 ,  C08L51/06 ,  C08L63/00 ,  C08L67/00 ,  C08L67/02 ,  C08L101/00 ,  C08L101/06

Abstract: PURPOSE: To obtain a saturated polyester resin composition, containing a saturated polyester and a metallic salt, etc., of an ethylene-unsaturated carboxylic acid copolymer, excellent in impact strength, especially low-temperature impact strength and further moldability and weld strength and useful for containers, etc. CONSTITUTION: This composition comprises (A) 50-95wt.% saturated polyester, derived from a dicarboxylic acid including terephthalic acid and a diol including ethylene glycol and having an intrinsic viscosity [η] within the range of 0.5-1.4dl/g, (B) 0.5-20wt.% metallic salt of an ethylene-unsaturated carboxylic acid copolymer, (C) 0.5-30wt.% ethylenic copolymer containing epoxy groups and preferably further (D) 0.5-30wt.% thermoplastic elastomer having at least one group selected from carboxyl, carboxylic acid anhydride and OH groups in one molecule. Furthermore, the component (D) is preferably an ethylene-α- olefin copolymer rubber graft-modified with maleic acid (anhydride).

公开(公告)号：JPH08127640A

公开(公告)日：1996-05-21

申请号：JP26585494

申请日：1994-10-28

Applicant: MITSUI PETROCHEMICAL IND

Inventor： TAKAHASHI KOJI ,  HATA ISAO ,  HIRAOKA SHOJI

IPC: C08J5/00 ,  C08G63/181 ,  C08G63/183 ,  C08G63/78 ,  C08G63/80 ,  C08G63/82 ,  C08G63/86 ,  C08J5/18

Abstract: PURPOSE: To obtain a polyester having an extremely low formaldehyde content. CONSTITUTION: A polyester obtained by production processes comprising (A) a liquid-phase polycondensation process for producing a polyester (a) by subjecting a terephthalic acid-containing dicarboxylic acid or its ester derivative and an ethylene glycol-containing dihydroxy compound or its ester derivative to liquid-phase polycondensation in the presence of a polycondensation catalyst and phosphorous acid or its derivative and (B) a solid-phase polycondensation process for producing a polyester (b) having 0.5-1.4dl/g intrinsic viscosity [η]measured in o-chlorophenol by heating the polyester (a) in an inert gas atmosphere at the melting point or below it is molded by injection molding or extrusion molding to provide the objective method for producing a molded article having

公开(公告)号：JPH07133408A

公开(公告)日：1995-05-23

申请号：JP28279393

申请日：1993-11-11

Applicant: MITSUI PETROCHEMICAL IND

Inventor： NIIMI KOJI ,  TAKAHASHI KOJI ,  HATA ISAO

IPC: C08K5/16 ,  C08K5/17 ,  C08K5/3475 ,  C08L67/00 ,  C08L67/02

Abstract: PURPOSE:To obtain an automotive interior and exterior material excellent in impact strength, especially low-temperature impact strength and rigidity, weathering resistance and appearance. CONSTITUTION:This automotive interior and exterior material is formed of a saturated polyester resin composition composed of 100 pts.wt. of total amount of (A) 50-95 pts.wt. of a saturated polyester, (B) 0.5-20 pts.wt. of a metal salt of an ethylene-unsaturated carboxylic acid copolymer, (C) 0.5-30 pts.wt. of a modified ethylene.alpha-olefin copolymer rubber, (D) 0.01-2.0 pts.wt. of a benzotriazole-based weathering stabilizer, (E) 0-2.0 pts.wt. of a hindered amine- based weathering stabilizer and as necessary, (F) 0.01-5.0 pts.wt. of a cabodiimide-based compound.

公开(公告)号：JPS61239198A

公开(公告)日：1986-10-24

申请号：JP8008085

申请日：1985-04-17

Applicant: MITSUI PETROCHEMICAL IND

Inventor： NAKAMURA SHIN ,  MURANAKA TAKESHI ,  SHOJI MASANORI ,  HATA ISAO

IPC: G21F9/30 ,  B09B3/00 ,  B09B5/00 ,  G21F9/00

公开(公告)号：JPH08252871A

公开(公告)日：1996-10-01

申请号：JP5623295

申请日：1995-03-15

Applicant: MITSUI PETROCHEMICAL IND

Inventor： HATA ISAO ,  OGATA OSAMU ,  HAMA TAKASHI

IPC: B65D21/08 ,  B29C49/04 ,  B29C49/08 ,  B29D22/00 ,  B29K67/00 ,  B29L22/00 ,  B65D1/02

Abstract: PURPOSE: To obtain a foldable hollow vessel having an excellent pressure resistance strength by orientation blow molding in a mold having a bellows like cavity. CONSTITUTION: A polyester hollow vessel has a port 1 and a bellows like body 3 is such a manner that the thickness of the body 3 preferably has a range of 70 to 200μm or preferably 90 to 120μm. If the thickness of the body has the range, it has excellent flavor barrier properties, and even if the vessel is repeatedly used and folded, the decrease in the strength of the vessel is small. When the vessel is molded by using the mold having a bellows like cavity by a blow molding method or preferably a biaxial drawing blow molding method, it is desired that the drawing magnification of the body is 10 times or more or preferably 12 to 20 times, and the longitudinal drawing magnification is twice to four times, and the lateral drawing magnification is preferably 2.5 to 6 times.