Polyester amides constituted by (A) ester units mainly comprising benzenedicarboxylic acid and 1,4-butanediol and (B) amido units comprising dodecanamido and/or undecanamido units, with the weight ratio of said ester units to said amido units being 5 to 95:95 to 5, which have excellent mechanical strength, transparency, oil resistance, adhesiveness, and heat-sensitive characteristics, a process for their preparation, and an adhesive for fibers and metals comprising said polyester amides.
Disclosed is a method for producing polyesters by polymerizing terephthalic acid and/or its ester-forming derivative, and a glycol and/or its ester-forming derivative in a plant comprising an esterification device and a polycondensation device in series, while partly or wholly recycling the distillate from the esterification device and/or the polycondensation device that consists essentially of a glycol and/or its ester-forming derivative. The method comprises a step of continuously or intermittently measuring the content of at least one of water, the glycol and its ester-forming derivative in the distillate to be recycled, determining the amounts of the raw materials to be fed to the intended reaction device, on the basis of the data thus measured, and feeding the thus-determined amounts of the raw materials to the reaction device; or comprises a step of storing the distillate, prior to being recycled for the starting material, in a storing tank that has a capacity corresponding to the amount of the glycol and/or its ester-forming derivative to be fed to the esterification device for a period of 10 hours or more.
A stabilizer composition which includes (a) a UV absorber of foramidine derivative, (b) a UV absorber of benzotriazole derivative, and (c) an antioxidant is disclosed. The stabilizer composition disclosed here are suitable for improving the stabilization of the organic polymers to against the degradation by light.
THERMOPLASTIC POLYESTER RESIN COMPOSITION AND MOLDED ARTICLE
申请人:DAICEL CHEMICAL INDUSTRIES, LTD.
公开号:EP1591486A1
公开(公告)日:2005-11-02
A molded article of an aromatic polyester block copolymer-series resin is obtained, which is excellent in hydrolysis resistance, heat resistance, and yellowing resistance. There is used a polyester based thermoplastic resin composition comprising: 100 parts by weight of a polyester block copolymer (A) which is a reaction product of a thermoplastic aromatic polyester (a) and a lactone (b) and has a terminal carboxyl group in an amount of less than 5 mg-KOH/g as an acid number; 0.05 to 5 parts by weight of a polycarbodiimide compound (B); 0.05 to 5 parts by weight of a bifunctional or polyfunctional epoxy compound (C); 0.01 to 0.5 part by weight of a phenol-series antioxidant (D); and 0.01 to 0.5 part by weight of a sulfur-series antioxidant (E).
Verwendung von Butylenterephtalat zur Herstellung thermoplastischen Zahnersatzes
申请人:Heraeus Kulzer GmbH
公开号:EP1714632A1
公开(公告)日:2006-10-25
Es werden die Verwendung zyklischen, oligomeren Butylenterephthalats (CBT™) zur Herstellung thermoplastischen Zahnersatzes oder zur Herstellung von Ausgangsmaterialien für thermoplastischen Zahnersatz beschrieben, ferner CBT™enthaltende Ausgangsmaterialien zur Herstellung thermoplastischen Zahnersatzes, sowie Verfahren zur Herstellung thermoplastischen Zahnersatzes.