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    • 7. 发明授权
    • Method of producing foamed polymer materials
    • 生产泡沫聚合物材料的方法
    • US5547996A
    • 1996-08-20
    • US282029
    • 1994-07-29
    • Donald K. BrandomJose P. DeSouzaDonald G. BairdGarth L. Wilkes
    • Donald K. BrandomJose P. DeSouzaDonald G. BairdGarth L. Wilkes
    • C08G61/12C08J9/02C08L71/00C08L79/08C08J9/08
    • C08J9/02C08G61/127C08L71/00C08L79/08C08J2361/20
    • Reacting carbonyls, such as aldehydes and ketones, with amines produces a ketimine or aldimine and a water byproduct. When the ketimine or aldimine reaction occurs in a polymer composition, the polymer becomes foamed due to the evolution of water. Hence, carbonyl and amine containing compounds may be introduced into a polymeric composition to serve as an in-situ blowing agent. The carbonyl and amine containing compounds may be different polymers which will be combined through a ketimine or aldimine linkage to form a graft co-polymer, they may be small molecular weight additives that are placed in the composition with a polymer that is to be foamed as a byproduct of a ketimine or aldimine reaction of the additives, or they may be a polymer containing a carbonyl or amine moiety and a small molecular weight additive compound that will react with the moiety on the polymer to form a ketimine or aldimine.
    • 羰基化合物如醛和酮与胺反应产生酮亚胺或醛亚胺和水副产物。 当在聚合物组合物中发生酮亚胺或醛亚胺反应时,由于水的释放,聚合物变得发泡。 因此,可以将羰基和胺化合物引入聚合物组合物中以用作原位发泡剂。 含羰基和胺的化合物可以是不同的聚合物,它们将通过酮亚胺或醛亚胺键组合以形成接枝共聚物,它们可以是小分子量的添加剂,其被放置在组合物中,其中待发泡的聚合物为 或者它们可以是含有羰基或胺部分和小分子量添加剂化合物的聚合物,其将与聚合物上的部分反应以形成酮亚胺或醛亚胺。