申请人:Uniroyal, Inc.
公开号:US03946064A1
公开(公告)日:1976-03-23
Certain hydrazodicarboxylates, namely polymers or oligomers made by reacting hydrazine with polyfunctional haloformates, especially difunctional haloformates, cyclized forms of said oligomers and condensation products of hydrocarbyl carbazates with polyfunctional, especially difunctional, haloformates are useful as chemical blowing agents for expanding gas-expandable polymeric materials. These compounds are novel.
某些肼二羧酸盐,即通过将肼与多官能团卤甲酸酯,特别是双官能团卤甲酸酯反应制成的聚合物或寡聚物,其环化形式和烃基卡巴泽酸酯与多官能团,特别是双官能团卤甲酸酯的缩合产物,可用作化学发泡剂,用于膨胀气体可膨胀的聚合物材料。这些化合物是新颖的。