N, N-dimethyl-1,3-propanediamine (wanda ake kira DMAPA daga baya) shine ƙananan diamine na aliphatic tare da ƙungiyoyin amino guda biyu da na farko a cikin kwayoyin halitta. Ruwa ne mara launi kuma bayyananne mai kamshin ammonia. Yana shan taba a cikin iska kuma yana narkewa cikin ruwa da kaushi na kwayoyin halitta. Tsarin kwayoyin halittarsa ​​shine C5H14N2 kuma tsarin tsarinsa shine (CH3)2NCH2CH2CH2NH2.
Yana ɗaya daga cikin mahimman nau'ikan mahaɗan amine mai kitse da mahimmancin matsakaicin kayan albarkatun ƙasa. Ana amfani da shi sosai a cikin sinadarai na yau da kullun, magungunan kashe qwari, rini, resins, da dai sauransu. A halin yanzu, yawancin DMAPA na kasar Sin ana amfani da su ne don shirya betaine da amidopropyldimethylamine, waɗanda ake amfani da su a cikin samfuran yau da kullun kamar shamfu, gel ɗin shawa, gel baby shower gel. kwandishana, sabulun ruwa da wanka. Bugu da kari, ana kuma amfani da DMAPA a matsayin mai kara kuzari na polyurethane, wakili na warkar da resin epoxy da hanzari, da kuma samar da rini.

Hanyar haɗakarwa ta DMAPA ta al'ada ita ce: 1. Yin amfani da dimethylamine da acrylonitrile a matsayin albarkatun kasa, ana samun dimethylaminopropionitrile (DMAPN) ta hanyar ƙara Michael. A cikin aiwatar da shirye-shiryen masana'antu na DMAPN, kusan 2% na jimlar yawan albarkatun ƙasa ana ƙara su gabaɗaya cikin ruwa don haɓaka haɓakar haɓakawa da cire wuce haddi dimethylamine azeotropically; 2. DMAPN da aka samu ta hanyar distillation a mataki na farko yana da ƙarfin hydrogenated a ƙarƙashin yanayin matsa lamba. Shiri na DMAPA

A mataki na biyu na hydrogenation don shirya DMAPA, wani sakamako na gefe zai faru. Abubuwan da aka samu na wannan dauki sune galibin amine bis-DMAPA na sakandare da amine tri-DMAPA. A halin yanzu, samar da DMAPA a cikin gida galibi yana ɗaukar maganin kettle, kuma sinadarin hydrogenation shine foda Raney nickel. Domin hana samuwar wannan samfurin, ya zama dole don ƙara 12% -16% na mai kara kuzari na caustic alkali mai ruwa bayani ko ruwa ammonia, caustic alkali mai ruwa bayani da ruwa ammonia Amfani zai samar da babban adadin. Ruwan sharar gida da ruwa mai sharar gida, wanda ke da wahala a lalata da sarrafa shi, yana ƙaruwa da nauyi bayan sarrafawa.

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