I-N,N-dimethyl-1,3-propanediamine (ebizwa ngokuba yi-DMAPA) yi-diamine esezantsi ye-aliphatic eneqela le-amino ezintathu kunye ne-primary kwi-molecule. Lulwelo olungenambala nolucacileyo olunevumba le-ammonia. Lutshaya emoyeni kwaye lunyibilika emanzini nakwi-organic solvents. Ifomula yayo ye-molecular yi-C5H14N2 kwaye ifomula yayo yolwakhiwo yi-(CH3)2NCH2CH2CH2NH2.
Yenye yezona ntlobo zibalulekileyo zeekhompawundi ze-amine ezinamafutha kwaye iyinxalenye ebalulekileyo yezinto eziluhlaza eziphilayo. Isetyenziswa kakhulu kwiikhemikhali zemihla ngemihla, izibulali-zinambuzane, iidayi, iiresini, njl. Okwangoku, uninzi lwe-DMAPA eTshayina lusetyenziswa kakhulu ekulungiseleleni i-betaine kunye ne-amidopropyldimethylamine, ezisetyenziswa kwiimveliso zeekhemikhali zemihla ngemihla ezifana ne-shampoo, i-shower gel, i-baby shower gel, i-conditioner, isepha yolwelo kunye nesepha. Ukongeza, i-DMAPA ikwasetyenziswa njenge-polyurethane catalyst, i-epoxy resin curing agent kunye ne-accelerator, kunye nasekuveliseni iidayi.

Indlela ephambili yokwenziwa kwe-DMAPA yile: 1. Ukusebenzisa i-dimethylamine kunye ne-acrylonitrile njengezinto eziluhlaza, i-dimethylaminopropionitrile (DMAPN) ifunyanwa ngokongeza kukaMichael. Kwinkqubo yokulungiselela i-DMAPN kwimizi-mveliso, malunga ne-2% yobunzima bezinto eziluhlaza ngokubanzi yongezwa emanzini ukukhuthaza impendulo yokongeza kunye nokususa i-dimethylamine engaphezulu azeotropically; 2. I-DMAPN efunyenwe ngokuhluzwa kwinqanaba lokuqala i-hydrogenated nge-catalytically phantsi kweemeko zoxinzelelo oluphezulu. Ukulungiswa kwe-DMAPA

Kwinyathelo lesibini le-hydrogenation ukulungiselela i-DMAPA, kuya kwenzeka i-reaction esecaleni. Iimveliso eziphuma kule reaction ikakhulu yi-secondary amine bis-DMAPA kunye ne-tertiary amine tri-DMAPA. Okwangoku, imveliso yasekhaya ye-DMAPA isebenzisa ikakhulu i-kettle reaction, kwaye i-hydrogenation catalyst yi-powdered Raney nickel. Ukuze kuthintelwe ukwenziwa kwale mveliso iphumayo, kuyimfuneko ukongeza i-12%-16% yobunzima be-catalyst yesisombululo samanzi se-caustic alkali okanye i-ammonia engamanzi, isisombululo samanzi se-caustic alkali kunye ne-ammonia engamanzi. Ukusetyenziswa kuya kuvelisa amanzi amaninzi amdaka kunye nolwelo olungcolileyo, okunzima ukuwohloka nokulucubungula, okwandisa umthwalo wokulungiswa emva kokucutshungulwa.

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