公开(公告)号：JP2004010844A

公开(公告)日：2004-01-15

申请号：JP2002169572

申请日：2002-06-11

Applicant: TORAY INDUSTRIES

Inventor： ICHIKAWA TOMOKO ,  OSAKI MISA ,  ARANISHI YOSHITAKA

IPC: C08L1/10 ,  C08K5/20 ,  C08L101/16 ,  D01F2/28

Abstract: PROBLEM TO BE SOLVED: To provide (1) a thermoplastic cellulose ester composition comprising ingredients with reduced environmental load which are based on a biomass-type cellulose ester and (2) a fiber of the composition having good melt-spinning properties, excellent strength and elongation characteristics and excellent uniformity of the fineness. SOLUTION: The composition and fiber comprise 50-95 wt.% of the ester and 5-50 wt.% of an acyclic compound of a molecular weight of 800 or lower containing an amide group(s) within the molecular chain as a plasticizer. COPYRIGHT: (C)2004,JPO

公开(公告)号：JP2002187942A

公开(公告)日：2002-07-05

申请号：JP2000388484

申请日：2000-12-21

Applicant: TORAY INDUSTRIES

Inventor： UCHIDA MINORU ,  OSAKI MISA ,  AOYAMA MASATOSHI

IPC: C08G63/85

Abstract: PROBLEM TO BE SOLVED: To produce a catalyst for polyester which is excellent in reactivity in esterification, transesterification, and polycondensation in comparison with conventionally used polytrimethylene terephthalate, has a good color tone, and has a low dipropylene glycol content, a low terminal carboxyl group content, and a low insoluble foreign matter content. SOLUTION: In producing a polyester by the polycondensation of a product obtained by the esterification or transesterification of an aromatic dicarboxylic acid component mainly comprising terephthalic acid or its ester-forming derivative with a glycol component mainly comprising propylene glycol, a liquid obtained by treating a titanium compound with water containing an alkali compound, an organic solvent, or a mixture of water and an organic solvent is added as a catalyst for esterification, transesterification and/or polycondensation.

公开(公告)号：JP2002146002A

公开(公告)日：2002-05-22

申请号：JP2000341585

申请日：2000-11-09

Applicant: TORAY INDUSTRIES

Inventor： UCHIDA MINORU ,  OSAKI MISA ,  AOYAMA MASATOSHI

IPC: C08G63/85

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a polyester, capable of giving the polyester having a better color tone, less dipropylene glycol content, and less carboxyl end-group content, when compared with conventional polypropylene terephthalate. SOLUTION: This method for producing a polyester comprises subjecting an aromatic dicarboxylic acid consisting mainly of terephthalic acid or its ester-forming derivative to esterification reaction or ester interchange reaction with a diol consisting mainly of propylene glycol, then subjecting the reaction product to polycondensation to produce the polyester of which the repeating unit consists mainly of propylene terephthalate, wherein a titanium compound is used as a catalyst for the esterification reaction, the ester interchange reaction and/or the polycondensation reaction, and further at least one kind of alkaline compound selected from the group consisting of nitrogen-containing compounds, sodium hydroxide, and potassium hydroxide is added to the reaction mixture.

公开(公告)号：JP2003246802A

公开(公告)日：2003-09-05

申请号：JP2002049627

申请日：2002-02-26

Applicant: TORAY INDUSTRIES

Inventor： ARANISHI YOSHITAKA ,  OSAKI MISA ,  YAMADA HIROYUKI

IPC: C08B3/16 ,  C08G83/00 ,  D01F2/28

Abstract: PROBLEM TO BE SOLVED: To obtain a thermoplastic cellulose acetate which is improved in brittleness and exhibits good mechanical properties, and a fiber composed thereof. SOLUTION: This thermoplastic cellulose acetate has a grafted side chain of which the principal repeating unit is lactic acid and the grafted side chain is composed of D-lactic acid and L-lactic acid as essential ingredients. This cellulose acetate exhibits substantially amorphous characteristics and no melting point is observed by DSC measurement. COPYRIGHT: (C)2003,JPO