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    • 10. 发明申请
    • Crosslinkable Thermoplastic Polyurethane
    • 可交联热塑性聚氨酯
    • US20150034361A1
    • 2015-02-05
    • US14519275
    • 2014-10-21
    • Lubrizol Advanced Materials, Inc.
    • Umit G. MakalGeorge H. LoeberLouis J. Brandewiede
    • C08J5/00B29C71/04H01B13/14H01B3/30H01B7/295
    • C08J5/00B29C71/04B29K2075/00B29K2105/24B29K2995/0016C08G18/6607C08G18/676C08G18/68C08J2375/08H01B3/302H01B7/295H01B13/148
    • The TPU of this invention contains unsaturation in its polymeric backbone. The unsaturation can be present in the soft segment or in the hard segment or in both the soft and hard segments of the TPU. The TPU can be molded like a thermoplastic, and can be subsequently crosslinked by exposure to electron beam irradiation into thermoset articles having excellent chemical resistance, dimensional stability, set properties, heat resistance, oxidative resistance, and creep resistance. In one embodiment, the TPUs of this invention are the reaction product (1) a hydroxyl terminated intermediate, (2) a polyisocyanate, (3) a saturated glycol chain extender, and (4) a glycol chain extender containing carbon-carbon double bonds, such as the allyl moieties present in trimethylolpropane monoallyl ether. In another embodiment of this invention, the thermoplastic polyurethane which is crosslinkable by e-beam irradiation is comprised of the reaction product of (1) a saturated hydroxyl terminated intermediate, (2) an unsaturated hydroxyl terminated intermediate, wherein the unsaturated hydroxyl terminated intermediate contains carbon-carbon double bonds, (3) a polyisocyanate, and (4) a saturated glycol chain extender.
    • 本发明的TPU在其聚合物主链中含有不饱和键。 该不饱和度可以存在于TPU的软段或硬链段或软段和硬区两者中。 TPU可以像热塑性塑料一样成型,并且随后可以通过电子束照射进入具有优异的耐化学性,尺寸稳定性,凝固性,耐热性,耐氧化性和抗蠕变性的热固性制品中而交联。 在一个实施方案中,本发明的TPU是反应产物(1)羟基封端的中间体,(2)多异氰酸酯,(3)饱和的乙二醇增链剂,和(4)含有碳 - 碳双键的二醇链延长剂 ,例如存在于三羟甲基丙烷单烯丙基醚中的烯丙基部分。 在本发明的另一个实施方案中,通过电子束照射可交联的热塑性聚氨酯由(1)饱和羟基封端的中间体,(2)不饱和羟基封端的中间体的反应产物组成,其中不饱和羟基封端的中间体包含 碳 - 碳双键,(3)多异氰酸酯,和(4)饱和二醇增链剂。