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    • 15. 发明申请
    • ONE-PART NON-TOXIC SPRAY FOAM
    • 一部分非毒性喷雾泡沫
    • WO2008141187A2
    • 2008-11-20
    • PCT/US2008/063253
    • 2008-05-09
    • OWENS CORNING INTELLECTUAL CAPITAL, LLCO'LEARY, RobertKORWIN EDSON, MichelleOLANG, Fatemeh
    • O'LEARY, RobertKORWIN EDSON, MichelleOLANG, Fatemeh
    • C08J9/00C08G61/12C08G2261/135C08G2261/312C08G2261/76C08J9/08C08J9/146C08J2207/04C08J2363/00C08K9/10
    • A one-part spray foam formed by Michael addition chemistry is provided. The foamable composition includes at least one electron donor, at least one electron acceptor, an encapsulated catalyst, and one or more blowing agents. The catalyst is a weak or strong base. The encapsulation of the catalyst controls the polymerization of the Michael addition compounds such that the catalyst can be added and/or activated at a desired time to begin the foaming reaction. The catalyst may be encapsulated in a high molecular weight inert polymer or wax. In some embodiments, the chemical blowing agent(s) are also encapsulated. To produce a foam according to the invention, a single stream of the foamable composition is fed into an application gun where the slurry is heated and mixed. The heat and/or mixing in the gun releases the catalyst, which initiates the reaction between the Michael donor and Michael acceptor to form the foam.
    • 提供了通过迈克尔加成化学形成的一部分喷雾泡沫。 可发泡组合物包括至少一种电子给体,至少一种电子受体,包封的催化剂和一种或多种发泡剂。 催化剂是弱碱或强碱。 催化剂的包封控制迈克尔加成化合物的聚合,使得催化剂可以在所需时间加入和/或活化以开始发泡反应。 催化剂可以包封在高分子量惰性聚合物或蜡中。 在一些实施方案中,化学发泡剂也被包封。 为了生产根据本发明的泡沫体,可发泡组合物的单一流进料到施胶枪中,其中浆料被加热和混合。 枪中的热和/或混合释放催化剂,引发迈克尔供体和迈克尔受体之间的反应以形成泡沫。