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    • 48. 发明申请
    • Thermoplastic Polyurethane With Reduced Tendency To Bloom From A Bio-Based Glycol
    • 热塑性聚氨酯具有降低从生物基二醇出现的倾向
    • US20140107311A1
    • 2014-04-17
    • US14118314
    • 2012-06-11
    • Julius Farkas
    • Julius Farkas
    • C08G71/04
    • C08G18/4238C08G18/10C08G18/664
    • The present invention discloses a thermoplastic polyurethane comprised of the reaction product of (1) a hydroxyl terminated polyester intermediate, (2) a polyisocyanate, and (3) a glycol chain extender; wherein the polyester intermediate is comprised of repeat units derived from a 1,3-propylene glycol component and a dicarboxylic acid wherein the 1,3-propylene glycol component comprises a bio-based 1,3-propylene glycol; wherein the polyester intermediate has a number average molecular weight from 500 to 10,000; and wherein the polyurethane includes hard segments that are the reaction product of the polyisocyanate and the glycol chain extender. This thermoplastic polyurethane is unique as it has a greatly reduced tendency to bloom and is prepared from a renewable material. Blooming causes articles containing the polyurethane to be hazy or foggy in appearance and can also reduce the ability of an article to be securely bound to another with an adhesive.
    • 本发明公开了一种由(1)羟基封端的聚酯中间体,(2)多异氰酸酯和(3)乙二醇扩链剂的反应产物组成的热塑性聚氨酯; 其中所述聚酯中间体由衍生自1,3-丙二醇组分和二羧酸的重复单元组成,其中所述1,3-丙二醇组分包含生物基1,3-丙二醇; 其中所述聚酯中间体的数均分子量为500至10,000; 并且其中所述聚氨酯包括作为所述多异氰酸酯和所述乙二醇扩链剂的反应产物的硬链段。 这种热塑性聚氨酯是独特的,因为它具有大大降低的开花倾向并且由可再生材料制备。 盛产会使含有聚氨酯的物品在外观上模糊或有雾,并且还可以降低制品与粘合剂牢固地粘结于另一种物品的能力。