公开(公告)号：JP2002284869A

公开(公告)日：2002-10-03

申请号：JP2001089822

申请日：2001-03-27

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  KUMAKI JIRO

IPC: C08G63/85

Abstract: PROBLEM TO BE SOLVED: To provide a process for the preparation of the polyester containing less alien substance than ever. SOLUTION: The process for the preparation of a polyester, comprising the esterification or transesterification of a dicarboxylic acid or its esterifiable derivative and a diol component consisting mainly of 1,4-butan diol by using as a catalyst an organic titanium compound and then the polycondensation thereof, is characterized by adding to the reaction system a cyclic compound having one or more hydroxyalkyl groups along with the above organic titanium compound.

公开(公告)号：JP2015091912A

公开(公告)日：2015-05-14

申请号：JP2013231801

申请日：2013-11-08

Applicant: TORAY INDUSTRIES

Inventor： AKAHIRA MASATO ,  KUMAZAWA SADANORI

IPC: C08G63/78 ,  C08G63/672

Abstract: 【課題】色調および熱安定性に優れ、さらに副生成物の生成量が少ない、イソソルビドが共重合したポリエステルの製造方法を提供する。【解決手段】ジカルボン酸成分に対して、イソソルビドを含むジオール成分およびイソソルビド重縮合させるポリエステルの製造方法であって、精製したイソソルビドを用いて、イソソルビドの精製工程から重縮合工程までの一連の工程を不活性ガス雰囲気下で行うことをすることを特徴とするポリエステルの製造方法。【選択図】なし

公开(公告)号：JP2003268223A

公开(公告)日：2003-09-25

申请号：JP2002077801

申请日：2002-03-20

Applicant: TORAY INDUSTRIES

Inventor： OOME HIROKAZU ,  KUMAZAWA SADANORI ,  KUMAKI JIRO

IPC: C08J5/00 ,  C08K5/00 ,  C08L67/04 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a resin composition excellent in moldability, mechanical properties, heat resistance, and surface properties; and a molded article comprising the same. SOLUTION: The resin composition contains a polylactic acid resin, a polyacetal resin, and a mold release agent. In the composition, the polylactic acid resin and the polyacetal resin are compatibilized with each other. The mold release agent is at least one substance selected from the group consisting of higher fatty acids, higher fatty acid metal salts, oxy fatty acids, fatty acid esters, paraffin, low-molecular-weight polyolefins, aliphatic amides, and alkylenebis fatty acid amides. The molded article is prepared from the resin composition. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2003238672A

公开(公告)日：2003-08-27

申请号：JP2002037876

申请日：2002-02-15

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  KUMAKI JIRO

IPC: C08G63/80

Abstract: PROBLEM TO BE SOLVED: To provide a production method for easily obtaining a poly(lactic acid) block copolymer that forms a poly(lactic acid) stereocomplex having a high molecular weight and a high melting point. SOLUTION: This method for producing a poly(lactic acid) block copolymer comprises (1) a first step of producing each of poly(L-lactic acid) composed of an L-lactic acid unit and poly(D-lactic acid) composed of a D-lactic acid unit, (2) a second step of mixing poly(L-lactic acid) and poly(D-lactic acid) obtained at the first step, and (3) a third step of solid-phase-polymerizing the mixture of poly(L-lactic acid) and poly(D-lactic acid) obtained at the second step at a temperature lower than its melting point. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002220454A

公开(公告)日：2002-08-09

申请号：JP2001356903

申请日：2001-11-22

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  UTAZAKI KENICHI ,  KUMAKI JIRO

IPC: C08J5/00 ,  C08G63/91 ,  C08K3/00 ,  C08L67/00 ,  C08L101/00 ,  H01R13/46

Abstract: PROBLEM TO BE SOLVED: To provide a polyester composition excellent in hydrolysis resistance and further less in evolving gas and viscosity variation when it is melted. SOLUTION: The composition is characterized by preparing it by kneading with a polyester, a molten mixture of (c) a glycidyl ester compound, (c) a glycidyl ether compound and (d) a catalyst.

公开(公告)号：JP2001114880A

公开(公告)日：2001-04-24

申请号：JP29311799

申请日：1999-10-15

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  KUMAKI JIRO

IPC: C08K3/22 ,  C08G63/181 ,  C08G63/78 ,  C08G63/85 ,  C08K3/32 ,  C08K5/49 ,  C08L67/02

Abstract: PROBLEM TO BE SOLVED: To provide a method for efficiently producing a polyester (PBT) having a low concentration of a carboxy terminal group, and excellent in hydrolysis resistance. SOLUTION: This method for producing the polyester comprising using a combined catalyst system of a titanium compound with a tin compound, or a single catalyst system of the tin compound, carrying out an esterification reaction or an ester-interchange reaction of an aromatic dicarboxylic acid or an ester-forming derivative thereof, and a diol consisting essentially of 1,4- butanediol, and subjecting the product to a 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：JP2001048968A

公开(公告)日：2001-02-20

申请号：JP22814099

申请日：1999-08-12

Applicant: TORAY INDUSTRIES

Inventor： KUMAZAWA SADANORI ,  OOME HIROKAZU ,  KUMAKI JIRO

IPC: C08G63/78 ,  C08G63/183

Abstract: PROBLEM TO BE SOLVED: To obtain polybutylene terephthalate excellent in quality and capable of being used in various kinds of uses as fiber, film and injection molded products by conducting esterification reaction and polycondensation reaction of 1,4-butylene glycol containing 2-(4'-hydroxybutoxy)tetrahydrofuran and terephthalic acid containing acetic acid as raw materials by a direct polymerization method. SOLUTION: By conducting esterification reaction and polycondensation reaction of a glycol comprising 1,4-butylene glycol as a principal ingredient and 0.05 to 0.5 wt.% 2-(4'-hydroxybutoxy)tetrahydrofuran and a dicarboxylic acid comprising terephthalic acid as a principal ingredient and 0.003 to 0.2 wt.% acetic acid, polybutylene terephthalate is obtained. The esterification reaction is conducted preferably at a reaction temperature of 180 to 250 deg.C, a pressure of 100 to 600 mmHg and a polybutylene terephthalate oligomer conversion of >=97%.

公开(公告)号：JP2000309631A

公开(公告)日：2000-11-07

申请号：JP11899499

申请日：1999-04-27

Applicant: TORAY INDUSTRIES

Inventor： OOME HIROKAZU ,  KUMAKI JIRO ,  KUMAZAWA SADANORI

IPC: B01D1/22 ,  B01J10/02 ,  B01J19/18 ,  C08G63/88

Abstract: PROBLEM TO BE SOLVED: To obtain a polyester having a quality comparable or superior to that of conventional polyester while shortening the polymerization time by supplying and passing a polyester in molten state through a vertical stirring thinfilm evaporator. SOLUTION: A polyester or its oligomer is supplied to and passed through a vertical stirring thin-film evaporator in molten state to increase the polymerization degree of the polyester. Preferably, the polyester or its oligomer has an intrinsic viscosity of 0.3-1.0 before passing through the evaporator, the intrinsic viscosity of the polyester after passing through the evaporator is higher than that of the polyester before passing by >=0.1, the reaction is carried out under a pressure lower than atmospheric pressure or in an inert gas flow and the polyester is a polymer selected from among polybutylene terephthalate, polycyclohexylene dimethylene terephthalate and polyethylene terephthalate.