首页>
外国专利>
Preparation of rigid polyurethane foam having improved aging properties
Preparation of rigid polyurethane foam having improved aging properties
展开▼
机译:具有改善的老化性能的硬质聚氨酯泡沫的制备
展开▼
页面导航
摘要
著录项
相似文献
摘要
Rigid polyurethane foam having improved aging properties is derived from the crude product of the phosgenation of toluene diamine after this product has been heated in the presence of formic acid or selected derivatives thereof.
展开▼