公开(公告)号：JP2002284868A

公开(公告)日：2002-10-03

申请号：JP2001091089

申请日：2001-03-27

Applicant: TORAY INDUSTRIES

Inventor： OOME HIROKAZU ,  KUMAZAWA SADANORI ,  KUMAKI JIRO

IPC: C08G63/78

Abstract: PROBLEM TO BE SOLVED: To provide a process for the efficient preparation of the poly(butylene terephthalate)(PBT) containing little alien substance with little byproduct of THF. SOLUTION: The process for the preparation of PBT, comprising the esterification of terephthalic acid and 1,4-butan diol and then the polycondensation thereof, is characterized by carrying out the above esterification at two or more steps, the first step of which esterification is carried out continuously in a way that a molar ratio of the diol component to the dicarboxylic acid component is made to be in the range of more than 0.7 to less than 1.1, and the second or more steps of which esterification undergoes a continuous esterification by adding additionally the remained diol component.

公开(公告)号：JP2001114881A

公开(公告)日：2001-04-24

申请号：JP29311899

申请日：1999-10-15

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  KUMAKI JIRO

IPC: C08K3/32 ,  C08G63/16 ,  C08G63/78 ,  C08G63/85 ,  C08L67/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently producing a polyester having a concentration of carboxy terminal groups lower than that by a conventional method, excellent in hydrolysis resistance, and also excellent in toughness of the resin. SOLUTION: This method for producing the polyester comprising carrying out an esterification reaction or an ester-interchange reaction of a dicarboxylic acid or an ester-forming derivative thereof, with a diol component consisting essentially of 1,4-butanediol in the presence of a catalyst, and subjecting the product to a polycondensation reaction is characterized in that an alkali metal or an alkaline earth metal phosphate is added to the reaction mixture at an arbitrary step before finishing the polycondensation reaction.

公开(公告)号：JP2003253106A

公开(公告)日：2003-09-10

申请号：JP2002052438

申请日：2002-02-27

Applicant: TORAY INDUSTRIES

Inventor： OOME HIROKAZU ,  KUMAZAWA SADANORI ,  KUMAKI JIRO

IPC: C08J5/00 ,  C08K3/00 ,  C08K5/00 ,  C08L29/00 ,  C08L67/04

Abstract: PROBLEM TO BE SOLVED: To provide a resin composition which is excellent in a crystallization property and heat resistance, and a molded product made of the same. SOLUTION: The resin composition contains a (A) polylactic acid resin and a (B) polyacetal resin. The polylactic acid resin comprises the same resin (A-1) containing the both of a poly L-lactic acid resin having an L-lactic unit as a main component and a poly D-lactic acid resin having a D-lactic acid unit as a main component and/or a (A-2) block copolymer consisting of a poly L- lactic acid segment having an L-lactic acid unit as a main component and a poly D-lactic acid segment having a D-lactic acid as a main component. The molded product is made of the resin composition. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003238788A

公开(公告)日：2003-08-27

申请号：JP2002037877

申请日：2002-02-15

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  MATSUMOTO HIDEKI ,  KUMAKI JIRO

IPC: C08J5/00 ,  C08F8/16 ,  C08L33/10 ,  C08L67/04

Abstract: PROBLEM TO BE SOLVED: To obtain a polylactic acid-containing resin composition which is transparent and excellent in heat resistance; and to provide a molded item made therefrom. SOLUTION: The resin composition contains (A) polylactic acid and (B) a copolymer containing lactone ring units. Preferably, the copolymer B contains 20-95 wt.% alkyl methacrylate component units, 0-5 wt.% vinyl carboxylate component units, and 5-80 wt.% lactone ring units. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002356543A

公开(公告)日：2002-12-13

申请号：JP2002069884

申请日：2002-03-14

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  KUMAKI JIRO

IPC: C08J5/00 ,  C08G63/06 ,  C08G63/78 ,  C08L67/04 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a polylactic acid block copolymer which forms a polylactic acid stereocomplex having a high melting point, its production method and molded product, and a composition of a polylactic acid. SOLUTION: The polylactic acid block copolymer is composed of a segment consisting of an L-lactic acid unit and of a D-lactic acid unit. The production method and molded product, and the composition of the polylactic acid are provided.

公开(公告)号：JP2001114884A

公开(公告)日：2001-04-24

申请号：JP29311699

申请日：1999-10-15

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  KUMAKI JIRO

IPC: C08G63/81 ,  C08G63/82

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polybutylene terephthalate having improved quality by which, when terephthalic acid containing acetic acid, and 1,4-butanediol are used as raw materials, and an esterification reaction and a polycondensation reaction following the reaction are carried out, the retardation of the polycondensation can be extremely reduced to carry out the polycondensation reaction smoothly, and the 1,4-butanediol distilled off at the polycondensation reaction can be effectively recovered and utilized in the esterification step as it is. SOLUTION: This method for producing the polybutylene terephthalate by subjecting the terephthalic acid containing the acetic acid and the 1,4-butanediol to the esterification reaction, and further subjecting the reaction product to the polycondensation reaction is characterized in that an alkaline compound is added to the reaction mixture at an arbitrary step before finishing the polycondensation reaction.

公开(公告)号：JP2001114879A

公开(公告)日：2001-04-24

申请号：JP29311599

申请日：1999-10-15

Applicant: TORAY INDUSTRIES

Inventor： OOME HIROKAZU ,  KUMAZAWA SADANORI ,  KUMAKI JIRO

IPC: C08G63/78 ,  C08G63/181 ,  C08G63/85

Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently producing a polyester having a low concentration of a carboxy terminal group, excellent in hydrolysis resistance and containing a small amount of a foreign matter. SOLUTION: This method for producing the polyester is characterized by carrying out an esterification reaction or an ester-interchange reaction under a reduced pressure, and adding an alkaline compound to the reaction mixture at an arbitrary step before the finishing of the polymerization reaction when producing the polyester by using a dicarboxylic acid component comprising an aromatic dicarboxylic acid or an ester-forming derivative, and a diol component consisting essentially of 1,4-butanediol in the presence of a catalyst, and carrying out the esterification reaction or the ester-interchange reaction, and the polycondensation reaction following it.

公开(公告)号：JP2006321988A

公开(公告)日：2006-11-30

申请号：JP2006115102

申请日：2006-04-19

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  AMANO YUKI

IPC: C08L67/04 ,  C08L23/00 ,  C08L101/00

Abstract: PROBLEM TO BE SOLVED: To obtain a resin composition excellent in moldability, durability and chemical resistance, and, in a preferable embodiment, excellent in toughness and heat resistance, and to provide a molded product made from the composition. SOLUTION: The resin composition is obtained by compounding 100 pts.wt. of a polylactic acid resin with less than 100 pts.wt. of a thermoplastic resin other than the polylactic acid resin. This resin composition has such a phase structure that the polylactic acid resin and the other thermoplastic resin represent dispersed phase and continuous phase respectively. The molded product made from the resin composition is also provided. In this resin composition, it is preferable that the ratio of the melt viscosity of the polylactic acid resin to that of the other thermoplastic resin be greater than 1, wherein the melt viscosity is measured at 190°C and at a shearing rate of 60 s -1 , and the other thermoplastic resin be a polyolefin resin, especially including polypropylene resin. COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2003113298A

公开(公告)日：2003-04-18

申请号：JP2002222594

申请日：2002-07-31

Applicant: TORAY INDUSTRIES

Inventor： OOME HIROKAZU ,  KUMAZAWA SADANORI ,  KUMAKI JIRO

IPC: C08J5/18 ,  C08L67/04 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a resin composition excellent in moldability, processability, mechanical properties, heat resistance and transparency. SOLUTION: This resin composition is obtained by compounding polylactic resin and polyacetal resin at a specified ratio, wherein the resin composition is a compatible compound of polylactic resin with the polyacetal resin, has

公开(公告)号：JP2002284870A

公开(公告)日：2002-10-03

申请号：JP2001091102

申请日：2001-03-27

Applicant: TORAY INDUSTRIES

Inventor： OOME HIROKAZU ,  KUMAZAWA SADANORI ,  KUMAKI JIRO

IPC: C08G63/85

Abstract: PROBLEM TO BE SOLVED: To provide a process for the efficient preparation of the poly(butylene terephthalate)(PBT) excellent in the quality with controlling the side reaction. SOLUTION: The process for the preparation of poly(butylene terephthalate), comprising a continuous esterification of terephthalic acid and 1,4-butan diol and then a polycondensation thereof, is characterized by carrying out the esterification in the presence of a titanium compound having a chelate ligand.