I-N, N-dimethyl-1,3-propanediamine (ngemuva kwalokhu ebizwa ngokuthi i-DMPA) iyidayimane ephansi ye-aliphatic enawo womabili amaqembu e-amino asezingeni eliphakeme nayisisekelo ku-molecule. Iwuketshezi olungenambala futhi olusobala olunephunga le-ammonia. Iyabhema emoyeni futhi iyancibilika emanzini nasezincibilikisini eziphilayo. Ifomula yayo yamangqamuzana ithi C5H14N2 futhi ifomula yayo yesakhiwo ithi (CH3)2NCH2CH2CH2NH2.
Ingenye yezinhlobo ezibalulekile zama-fatty amine compounds kanye ne-organic material eluhlaza okuphakathi nendawo. Isetshenziswa kabanzi kumakhemikhali wansuku zonke, izibulala-zinambuzane, odayi, ama-resin, njll. Njengamanje, iningi le-DMPA e-China lisetshenziselwa kakhulu ukulungisa i-betaine ne-amidopropyldimethylamine, esetshenziswa emikhiqizweni yansuku zonke yamakhemikhali njenge-shampoo, ijeli yokugeza, ijeli yokugeza izingane, i-conditioner, insipho ewuketshezi kanye ne-detergent. Ngaphezu kwalokho, i-DMPA iphinde isetshenziswe njenge-catalyst ye-polyurethane, i-epoxy resin yokwelapha i-ejenti kanye ne-accelerator, nasekukhiqizeni odayi.

Umzila ojwayelekile wokuhlanganisa we-DMPA uthi: 1. Ukusebenzisa i-dimethylamine ne-acrylonitrile njengezinto zokusetshenziswa, i-dimethylaminopropionitrile (DMAPN) itholakala ngokungezwa kukaMichael. Enqubweni yokulungiswa kwezimboni ze-DMAPN, cishe i-2% yenani eliphelele lezinto zokusetshenziswa ngokuvamile zengezwa emanzini ukuze kuthuthukiswe ukusabela kokwengezwa nokususa i-dimethylamine eyeqile azeotropically; 2. I-DMAPN etholwe nge-distillation esinyathelweni sokuqala i-catalytically hydrogenated ngaphansi kwezimo zengcindezi ephezulu. Ukulungiswa kwe-DMPA

Esinyathelweni sesibili se-hydrogenation ukulungiselela i-DMPA, ukusabela ohlangothini kuzokwenzeka. Imikhiqizo yalokhu kusabela ngokuyinhloko i-amine bis-DMPA yesibili kanye ne-tertiary amine tri-DMPA. Njengamanje, ukukhiqizwa kwasekhaya kwe-DMPA ikakhulukazi kusebenzisa ukusabela kweketela, kanti i-hydrogenation catalyst iyimpuphu ye-Raney nickel. Ukuze kuncishiswe ukwakheka kwalo mkhiqizo, kuyadingeka ukwengeza u-12% -16% we-catalyst mass ye-caustic alkali solution aqueous noma i-ammonia ewuketshezi, i-caustic alkali isixazululo samanzi kanye ne-ammonia ewuketshezi Ukusetshenziswa kuzokhiqiza inani elikhulu amanzi angcolile kanye noketshezi olulahlwayo, okunzima ukululaza nokucubungula, okwandisa umthwalo wokucubungula emva kokucubungula.

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