The excess amine is employed to selectively neutralize by-product acid as the amine salt.
使用该过量的胺将副产物酸选择性中和为胺盐。
Main compositions: double strands quaternary amine salt, solubilizing agent, softener and natural antibacterial essential oil.
主成份：新型无毒抗菌剂双链季胺盐、增溶剂、柔软剂、天然抗菌芳香精油。
Polyimide foams were prepared from poly(ester-amine salt) precursor powder through a foaming process, using aromatic dianhydride and diamine as monomers.
以芳香二酐和二胺为单体，采用聚酯铵盐前体粉末发泡的方法制备聚酰亚胺泡沫材料。
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