会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Microporous isocyanate-based polymer compositions and method of
preparation
    • 微孔异氰酸酯基聚合物组合物及其制备方法
    • US5478867A
    • 1995-12-26
    • US268059
    • 1994-06-29
    • Ricky L. Tabor
    • Ricky L. Tabor
    • C08G18/09C08J9/28C08L75/00C08G18/00
    • C08J9/28C08G18/092C08G2101/0091C08J2201/0502C08J2205/028C08J2375/00C08J2379/04
    • A novel microporous isocyanate-based xerogel composition is disclosed. The composition can be prepared by a method comprising (1) (1) admixing (a) a polyisocyanate component, (b) a substantially unreactive solvent, and, optionally, (c) a polymerization catalyst, water, an active-hydrogen compound or a mixture thereof, provided that (c) is included wherein (b) does not also function to catalyze polymerization; under reaction conditions sufficient to form a gel; and (2) removing the solvent under non-supercritical conditions sufficient to form a microporous xerogel composition. The compositions can be readily evacuated for use in thermal insulative applications such as vacuum panels, for uses such as appliance insulation, which show superior K-factor values when compared with, for example, conventional rigid polyurethane open-cell foams as used in similar applications.
    • 公开了一种新型的微孔异氰酸酯基干凝胶组合物。 组合物可以通过以下方法制备:(1)(1)混合(a)多异氰酸酯组分,(b)基本上不反应的溶剂,和任选地(c)聚合催化剂,水,活性氢化合物或 其包含(c)的混合物,其中(b)也不起催化聚合的作用; 在足以形成凝胶的反应条件下; 和(2)在足以形成微孔干凝胶组合物的非超临界条件下除去溶剂。 组合物可以容易地排出用于热绝缘应用,例如真空面板,用于诸如器具绝缘的用途,当与类似应用中使用的常规刚性聚氨酯开孔泡沫相比时,其显示出优异的K因子值 。