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已合成N,N—二氨丙基十六烷基胺及盐酸盐,其盐酸盐是性能良好的阳离子沥青乳化剂。含有这种乳化剂0.27％乳化沥青对各种骨料,例如砂、石、水泥等有良好粘附性。实验表明,十六胺与丙烯睛在甲醇或甲醇水中进行的双氰乙基化反应分两步进行:第一步是单氰乙基化,紧接着是双氰乙基化。酸,例如磷酸、醋酸和三氟乙酸都不能促进十六胺的氰乙基化反应。有机碱,例如吡啶能加速单氰乙基化,而不能促进双氰乙基化。纯的N,N—二氰乙基十六胺的熔点应为53—54℃,于210℃分解为N—氰乙基十六胺和丙烯睛。N,N—二氰乙基十八胺熔点为57—58℃,于196℃分解为N—氰乙基十八胺和丙烯睛。
N, N-Diaminopropyl hexadecylamine and hydrochloride have been synthesized and their hydrochloride salts are good performance cationic asphalt emulsifiers. 0.27% emulsified bitumen containing this emulsifier has good adhesion to various aggregates such as sand, stone, cement and the like. Experiments show that hexadecylamine and acrylonitrile in methanol or methanol water in the dicyanoethylation reaction carried out in two steps: The first step is monocyanoethylation, followed by dicyanoethylation. Neither acids, such as phosphoric acid, acetic acid and trifluoroacetic acid, promote the cyanoethylation of the hexadecylamine. Organic bases, such as pyridine, can accelerate monocyanoethylation without promoting dicyanoethylation. The pure N, N-dicyanoethyl hexadecylamine should have a melting point of 53-54 ° C and decompose at 210 ° C into N-cyanoethyl hexadecylamine and acrylonitrile. N, N-dicyanoctyl eighteen amine melting point of 57-58 ° C, at 196 ° C decomposition of N-cyanoethyl octadecyl amine and acrylonitrile.