申请人:Dow Global Technologies LLC
公开号:EP2463329A1
公开(公告)日:2012-06-13
A method of making a molded rigid polyurethane foam comprising injecting into a closed mold cavity a reaction mixture at a packing factor of 1.03 to 1.9, wherein the mold cavity is under a pressure of from 300 to 950 mbar, wherein the reaction mixture comprises an organic polyisocyanate, a polyol composition, a catalyst, optionally auxiliary substances and/or additives, and a chemical blowing agent component in an amount of from 1 to 5 weight percent based on the total weight of the components excluding polyisocyanate, the chemical blowing agent component comprising at least one chemical blowing agent, wherein the chemical blowing agent component is the sole blowing agent.
一种制造模塑硬质聚氨酯泡沫塑料的方法,包括将反应混合物以 1.03 至 1.9,其中模腔的压力为 300 至 950 毫巴,反应混合物包括有机多异氰酸酯、多元醇组合物、催化剂、可选的辅助物质和/或添加剂,以及化学发泡剂组分,其用量为除多异氰酸酯之外的组分总重量的 1 至 5%,化学发泡剂组分包括至少一种化学发泡剂,其中化学发泡剂组分是唯一的发泡剂。