Method for preparing copolyester by adopting germanium catalyst

• Main Authors: GEORGE, SCOTT, ELLERY, TREECE MARK ALLAN, WOODS JEFFREY S, KITA MICHAEL R, CANNON, JAMES, S, HU HUAMIN, VOGEL, CHRISTOPHER, A, FLEHNO, CHRISTOPHER, M, HOLDEN JAMES MARK
• Format: Patent
• Language: Chinese; English
• Published: 21.06.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

There is provided a method of making a copolyester, the method comprising polymerizing, in the presence of a germanium catalyst, 1) at least one terephthalate monomer; 2) from about 85 to about 96 mol% ethylene glycol; and 3) from about 4 to about 15 mol% of a combination of diethylene glycol (DEG) and at least one diol residue selected from the group consisting of 1, 4-cyclohexanedimethanol residue (CHDM), propylene glycol residue (MPG), and 2, 2, 4, 4-tetramethyl-1, 3-cyclobutanediol residue (TMCD); wherein the germanium catalyst is present in the copolyester at a concentration of about 5 to about 500 ppm, based on elemental germanium; wherein the diacid is based on such that 100 mol% diacid equivalents are substantially equal to the total 100 mol% diol equivalents. 提供了制备共聚酯的方法，所述方法包括：在锗催化剂的存在下将以下聚合以制备所述共聚酯：1)至少一种对苯二甲酸酯单体；2)大约85至大约96摩尔％的乙二醇；和3)大约4至大约15摩尔％的二乙二醇(DEG)与至少一种选自1，4-环己烷二甲醇残基(CHDM)、一丙二醇残基(MPG)和2,2，4，4-四甲基-1，3-环丁二醇残基(TMCD)的二醇残基的组合；其中所述锗催化剂以大约5至大约500ppm的浓度存在于所述共聚酯中，基于元素锗；其中所述二酸基于令100摩尔％的二酸当量与总计100摩尔％的