N,N-dimethyl-1,3-propanediamine (txij no mus hu ua DMAPA) yog ib qho aliphatic diamine qis dua nrog ob qho tib si tertiary thiab thawj amino pawg hauv lub molecule. Nws yog ib qho kua tsis muaj xim thiab pob tshab nrog ib qho tsw ntawm ammonia. Nws haus luam yeeb hauv huab cua thiab yaj tau hauv dej thiab cov organic solvents. Nws cov mis molecular yog C5H14N2 thiab nws cov qauv yog (CH3)2NCH2CH2CH2NH2.
Nws yog ib qho ntawm cov khoom tseem ceeb ntawm cov roj amine thiab yog ib qho tseem ceeb ntawm cov khoom siv raw organic. Nws yog siv dav hauv cov tshuaj txhua hnub, tshuaj tua kab, xim, resins, thiab lwm yam. Tam sim no, feem ntau DMAPA hauv Suav teb feem ntau yog siv los npaj betaine thiab amidopropyldimethylamine, uas yog siv rau hauv cov khoom siv txhua hnub xws li tshuaj zawv plaub hau, da dej gel, da dej gel menyuam yaus, tshuaj pleev, xab npum thiab tshuaj ntxuav tes. Tsis tas li ntawd, DMAPA kuj tseem siv ua polyurethane catalyst, epoxy resin curing agent thiab accelerator, thiab hauv kev tsim cov xim.

Txoj kev tsim cov DMAPA yog: 1. Siv dimethylamine thiab acrylonitrile ua cov khoom siv raw, dimethylaminopropionitrile (DMAPN) tau txais los ntawm Michael ntxiv. Hauv cov txheej txheem ntawm kev npaj DMAPN hauv kev lag luam, kwv yees li 2% ntawm tag nrho cov khoom siv raw feem ntau yog ntxiv rau hauv dej los txhawb cov tshuaj tiv thaiv ntxiv thiab tshem tawm cov dimethylamine ntau dhau azeotropically; 2. DMAPN tau txais los ntawm kev distillation hauv thawj kauj ruam yog catalytic hydrogenated nyob rau hauv cov xwm txheej siab. Kev npaj ntawm DMAPA

Hauv kauj ruam thib ob ntawm hydrogenation los npaj DMAPA, yuav muaj kev cuam tshuam sab. Cov khoom seem ntawm qhov kev cuam tshuam no feem ntau yog cov amine theem ob bis-DMAPA thiab cov amine theem peb tri-DMAPA. Tam sim no, kev tsim khoom hauv tsev ntawm DMAPA feem ntau siv cov tshuaj tiv thaiv kettle, thiab cov catalyst hydrogenation yog hmoov Raney nickel. Txhawm rau kom tsis txhob muaj kev tsim cov khoom seem no, nws yog qhov tsim nyog los ntxiv 12% -16% ntawm cov catalyst pawg ntawm caustic alkali aqueous kua lossis kua ammonia, caustic alkali aqueous kua thiab kua ammonia. Kev siv yuav tsim cov dej khib nyiab thiab cov kua khib nyiab ntau, uas nyuaj rau degrade thiab ua tiav, ua rau lub nra hnyav ntawm kev ua tiav tom qab.

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