发明授权
US4221875A Flame resistant polyurethane foam and the method for manufacturing the same 失效
耐火聚氨酯泡沫及其制造方法

Flame resistant polyurethane foam and the method for manufacturing the
same
摘要:
According to the present invention polyurethane foams, can be obtained as flame resistant and non-corrosive product. The invention specifies the foaming of raw material mixture comprising polyhydroxyl compound, polyisocyanate, blowing agent and etc. to be carried out in the presence of melamine powder added thereto as novel flame retardant, the final products being inexpensive and suitable to be used as structural material, etc.
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