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    • 10. 发明授权
    • Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester
    • 用于聚酯生产的催化剂,使用催化剂生产聚酯的方法,通过该方法获得的聚酯和聚酯的用途
    • US06346070B1
    • 2002-02-12
    • US09470664
    • 1999-12-22
    • Takeshi OhmatsuzawaFujito EharaHideshi HoriKazuo ToyotaKenzaburou FukutaniJunichi ImutaAkiyoshi ShimizuTakayuki OnogiSeiji NodaMasayuki SakaiShoji HiraokaKoji NakamachiMichio TsugawaSatoru Miyazoe
    • Takeshi OhmatsuzawaFujito EharaHideshi HoriKazuo ToyotaKenzaburou FukutaniJunichi ImutaAkiyoshi ShimizuTakayuki OnogiSeiji NodaMasayuki SakaiShoji HiraokaKoji NakamachiMichio TsugawaSatoru Miyazoe
    • C08G6378
    • C08G63/85C08G63/183C08G63/82C08G63/88
    • The present invention provides a catalyst for polyester production capable of producing a polyester with high catalytic activity and a process for producing a polyester using the catalyst. The catalyst for polyester production comprises a solid titanium compound which is obtained by dehydro-drying a hydrolyzate obtained by hydrolysis of a titanium halide and which has a molar ratio (OH/Ti) of a hydroxyl group (OH) to titanium (Ti) exceeding 0.09 and less than 4. The present invention also provides a method to obtain a polyester having a small increase of the acetaldehyde content during the molding. This method comprises bringing a polyester, which is obtained by the use of a titanium compound catalyst and in which the reaction has been completed, into contact with a phosphoric ester aqueous solution or the like having a concentration of not less than 10 ppm in terms of phosphorus atom. The present invention further provides a polyester having excellent transparency and tint and molded products of the polyester such as a blow molded article, a film, a sheet and a fiber. The polyester is obtained by polycondensing an aromatic dicarboxylic acid or an ester-forming derivative thereof and an aliphatic diol or an ester-forming derivative thereof in the presence of a catalyst for polyester production which comprises a polycondensation catalyst component comprising a solid titanium compound and a co-catalyst component comprising a magnesium compound. This polyester has a titanium content of 1 to 100 ppm, a magnesium content of 1 to 200 ppm and a weight ratio (Mg/Ti) of magnesium to titanium of not less than 0.01.
    • 本发明提供一种能够生产具有高催化活性的聚酯的聚酯制造催化剂和使用该催化剂生产聚酯的方法。 用于聚酯生产的催化剂包括固体钛化合物,其通过脱水干燥由卤化钛水解得到的水解产物并且具有羟基(OH)与钛(Ti)的摩尔比(OH / Ti)超过钛 0.09以上且低于4.本发明还提供一种在成型时获得乙醛含量增加少的聚酯的方法。 该方法包括使通过使用钛化合物催化剂获得的反应已完成的聚酯与浓度不小于10ppm的磷酸酯水溶液等接触,换算为 磷原子。 本发明还提供一种聚酯,其具有优异的透明度和色调,并且聚酯的成型产品如吹塑制品,薄膜,片材和纤维。 在聚酯制造用催化剂的存在下,通过将芳香族二羧酸或其成酯性衍生物和脂肪族二醇或其成酯衍生物缩聚得到聚酯,该催化剂包括含有固体钛化合物的缩聚催化剂组分和 助催化剂组分包含镁化合物。 该聚酯的钛含量为1〜100ppm,镁含量为1〜200ppm,镁与钛的重量比(Mg / Ti)为0.01以上。