N, N-dimethyl-1,3-propanediamine (yotchedwa DMPA) ndi gawo lotsika la aliphatic diamine lomwe lili ndi magulu onse apamwamba komanso apamwamba amino mu molekyulu. Ndi madzi opanda mtundu komanso owoneka bwino okhala ndi fungo la ammonia. Imasuta mumlengalenga ndipo imasungunuka m'madzi ndi organic solvents. Mapangidwe ake a maselo ndi C5H14N2 ndipo mawonekedwe ake ndi (CH3)2NCH2CH2CH2NH2.
Ndi imodzi mwazinthu zofunika kwambiri zamafuta a amine komanso zofunikira zapakatikati. Amagwiritsidwa ntchito kwambiri pamankhwala atsiku ndi tsiku, mankhwala ophera tizilombo, utoto, utomoni, ndi zina zambiri. Pakalipano, DMPA yambiri ku China imagwiritsidwa ntchito kwambiri pokonzekera betaine ndi amidopropyldimethylamine, zomwe zimagwiritsidwa ntchito pamankhwala atsiku ndi tsiku monga shampu, gel osamba, gel osamba ana, conditioner, madzi sopo ndi detergent. Kuphatikiza apo, DMPA imagwiritsidwanso ntchito ngati chothandizira polyurethane, epoxy resin kuchiritsa wothandizira ndi accelerator, komanso kupanga utoto.

Njira yayikulu yopangira DMPA ndi: 1. Kugwiritsa ntchito dimethylamine ndi acrylonitrile monga zopangira, dimethylaminopropionitrile (DMAPN) imapezeka kudzera mwa Michael kuwonjezera. Pokonzekera mafakitale a DMAPN, pafupifupi 2% ya kuchuluka kwa zinthu zopangira nthawi zambiri amawonjezeredwa kumadzi kuti apititse patsogolo kuwonjezereka ndikuchotsa dimethylamine owonjezera azeotropically; 2. DMAPN yopezedwa ndi distillation mu sitepe yoyamba ndi catalytically hydrogenated pansi pa zovuta kwambiri. Kukonzekera kwa DMPA

Mu gawo lachiwiri la hydrogenation kukonzekera DMPA, kuyankha kwapambali kudzachitika. Zomwe zimapangidwanso ndi izi ndi amine bis-DMPA yachiwiri ndi tertiary amine tri-DMPA. Pakali pano, zoweta kupanga DMPA makamaka utenga ketulo anachita, ndi chothandizira hydrogenation ndi ufa Raney faifi tambala. Pofuna kupondereza mapangidwe awa ndi mankhwala, m`pofunika kuwonjezera 12% -16% ya chothandizira misa caustic zamchere amadzimadzi njira kapena madzi ammonia, caustic zamchere amadzimadzi njira ndi madzi ammonia ntchito adzabala kuchuluka kwa madzi ammonia. madzi otayira ndi madzi otayira, omwe ndi ovuta kutsitsa ndikuwongolera, kuonjezera kulemedwa kwa post-processing.

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