In a process for the production of cellular products comprising thermoplastic or rubber materials the blowing agents employed have the formula: ##STR1## wherein A represents NHX, NRR' or OR X represents H or a lower alkyl group, R represents a lower alkyl group, and R' represents a lower alkyl group. The novel blowing agents provide high gas yields and have high decomposition temperatures while forming only inert nitrogen gas. They are particularly suitable for the production of cellular products from high temperature thermoplastic materials such as polycarbonates.
在生产包含热塑性或橡胶材料的细胞产品的过程中,所使用的发泡剂具有以下公式:##STR1## 其中 A 代表 NHX、NRR' 或 OR,X 代表 H 或较低的烷基,R 代表较低的烷基,R' 代表较低的烷基。这种新型的发泡剂提供高气体产率,并具有高分解温度,同时只形成惰性氮气。它们特别适用于从高温热塑性材料(如聚
碳酸酯)生产细胞产品。