Process for preparing low smoke-generating rigid polyurethane foam

摘要: A process for preparing rigid polyurethane foam in which the major ingredients are a polyisocyanate, polyol having more than three hydroxy groups and hydroxyl value greater 100, blowing agents, comprising adjusting ratio of chemical equivalent polyisocyanate to agent react with range between 2 : 1 1, adding polymer glucose and/or derivative thereof form powder amount exceeding 5% by weight.