发明授权
US4362678A Method of making polyisocyanurate foam laminate 失效
制备聚异氰脲酸酯泡沫层压板的方法

Method of making polyisocyanurate foam laminate
摘要:
A process for producing a laminate of polyisocyanurate foam which is the reaction product of a polymethylene polyphenylisocyanate and a polyol which is ethoxylated trimethylol propane, ethoxylated trimethylol ethane, ethoxylated pentaerythritol or ethoxylated glycerin. Laminates of such foams exhibit improved adhesion of the facing sheet.
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