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    • 3. 发明授权
    • Low temperature segmented copolymer compositions and methods
    • 低温分段共聚物组合物和方法
    • US08334356B1
    • 2012-12-18
    • US12777264
    • 2010-05-11
    • Andrew P. NowakChaoyin ZhouRichard E. Sharp
    • Andrew P. NowakChaoyin ZhouRichard E. Sharp
    • C08G77/26
    • C08L83/04C08G77/16C08K5/29C08L71/00
    • There is provided segmented copolymer compositions and methods of making the same. The composition has one or more α,ω (alpha, omega) amine or α,ω (alpha, omega) hydroxyl terminated polysiloxane first soft segments having an average molecular weight of between about 2500 grams per mole to about 10,000 grams per mole. The composition further has one or more diisocyanate species. The composition further has one or more low molecular weight diol or diamine chain extenders. The composition has a high flexibility at an environmental temperature of down to about −100 degrees Celsius, and further has a percent elongation of greater than about 250%, a high tensile strength of greater than about 25 MPa (megapascals), and a single low glass transition temperature (Tg) in a range of from about −60 degrees Celsius to about −110 degrees Celsius.
    • 提供了分段共聚物组合物及其制备方法。 该组合物具有一个或多个α,ω(α,ω)胺或α,ω(α,ω)羟基封端的聚硅氧烷第一软链段,其平均分子量为约2500克/摩尔至约10,000克/摩尔。 组合物还具有一种或多种二异氰酸酯物质。 组合物还具有一种或多种低分子量二醇或二胺扩链剂。 该组合物在低至约-100摄氏度的环境温度下具有高柔性,并且进一步具有大于约250%的百分比伸长率,大于约25MPa(兆帕)的高拉伸强度,以及单一低 玻璃化转变温度(Tg)在约-60摄氏度至约-110摄氏度的范围内。