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    • 57. 发明授权
    • Amorphous, high glass transition temperature copolyester compositions, methods of manufacture, and articles thereof
    • 无定形,高玻璃化转变温度共聚酯组合物,制造方法及其制品
    • US08901273B2
    • 2014-12-02
    • US13397210
    • 2012-02-15
    • Navinchandra S. AsthanaGanesh Kannan
    • Navinchandra S. AsthanaGanesh Kannan
    • C08G63/02C08F8/00
    • C08G63/185C08L67/02C08L55/02C08L51/04C08L25/06
    • An amorphous copolyester comprising the reaction product of (a) a monomer of formula I wherein R1, R2, R3, and R5 are each independently a C1-3 alkyl group, a is 0-1, b is 0-4, c is 0-4 and d is 0-3, and each R4 is independently hydrogen or a C1-3 alkyl group; (b) a terephthalyl component selected from terephthalic acid, a di(C1-3 alkyl) terephthalate, and combinations thereof, derived from a terephthalyl-containing polyester; and (c) 1,4-cyclohexane dimethanol; wherein the monomer (a) units are present in an amount from 7 to less than 12 mole % of the copolyester based on the total moles of repeat units in the copolyester; and the copolyester has a glass transition temperature of at least 107° C., an intrinsic viscosity of at least 0.7 dl/g, and a molded sample has a Notched Izod value of at least 290 J/m determined in accordance with ASTM D256.
    • 一种无定形共聚酯,其包含(a)式I单体的反应产物,其中R 1,R 2,R 3和R 5各自独立地为C 1-3烷基,a为0-1,b为0-4,c为0 -4和d为0-3,各R 4独立地为氢或C 1-3烷基; (b)衍生自对苯二甲酸酯的聚酯的选自对苯二甲酸,二(C 1-3烷基)对苯二甲酸酯的对苯二甲酸酯成分及其组合; 和(c)1,4-环己烷二甲醇; 其中基于共聚酯中的重复单元的总摩尔数,单体(a)单元以共聚酯的7至小于12摩尔%的量存在; 共聚酯的玻璃化转变温度为至少107℃,特性粘度为0.7dl / g以上,成型品的缺口伊佐德值至少为290J / m,根据ASTM D256测定。