This paper studied the synthesis of rubber accelerator DZ by rubber accelerator DM, dicyclohexyl amine and ammonia in the solvent of methanol.
采用促进剂DM和二环己胺为原料，以氨气为缚酸剂，用甲醇做溶剂合成橡胶硫化促进剂DZ。
2
Writer describe that the quality of chitin amine and chitin amine, choice of solvent, density of spinning liquid and setting bath will influence the quality of chitin and chitin amine fiber.
阐述了影响其质量的因素有原料的质量、溶剂的选择、纺丝液浓度的确定、凝固浴的确定等方面。
3
Polysubstituted pyridines and 1,4-dihydropyridines were prepared in a three-component reaction of aromatic aldehyde, malononitrile and aliphatic amine in a mixed solvent of methanol and water.