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N, N-dimethyl-1,3-propanediamine (inozonzi DMPA) ndeye yakaderera aliphatic diamine ine ese epamusoro uye ekutanga amino mapoka mumorekuru. Imvura isina ruvara uye yakajeka ine kunhuhwirira kweammonia. Inoputa mumhepo uye inonyungudika mumvura uye organic solvents. Yayo molecular formula ndeye C5H14N2 uye chimiro chayo chechimiro ndeye (CH3)2NCH2CH2CH2NH2.
Ndiyo imwe yemhando dzakakosha dzemafuta amine makomisheni uye yakakosha organic mbishi zvinhu zvepakati. Inoshandiswa zvakanyanya mumakemikari ezuva nezuva, mishonga yekuuraya zvipembenene, dhayi, resins, etc. Parizvino, DMPA yakawanda muChina inonyanya kushandiswa kugadzirira betaine uye amidopropyldimethylamine, iyo inoshandiswa mumishonga yemazuva ose yemakemikari yakadai se shampoo, gel yekugeza, gel yekugeza mwana, conditioner, sipo yemvura uye detergent. Mukuwedzera, DMPA inoshandiswawo se polyurethane catalyst, epoxy resin kurapa mumiririri uye accelerator, uye mukugadzirwa kwedhayi.

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Nzira huru yekubatanidza nzira yeDMPA ndeye: 1. Kushandisa dimethylamine uye acrylonitrile sezvinhu zvakasvibiswa, dimethylaminopropionitrile (DMAPN) inowanikwa kuburikidza naMichael kuwedzera. Muchigadziro chekugadzirwa kwemaindasitiri eDMAPN, inenge 2% yehuwandu hwehuwandu hwezvinhu zvakasvibiswa zvinowanzowedzerwa kumvura kukurudzira maitiro ekuwedzera uye kubvisa yakawandisa dimethylamine azeotropically; 2. DMAPN inowanikwa ne distillation munhanho yekutanga inonzi catalytically hydrogenated pasi pemamiriro ekumanikidzwa kukuru. Kugadzirira kweDMPA

Muchinhanho chechipiri chehydrogenation yekugadzirira DMPA, maitiro epadivi achaitika. Izvo-zvakagadzirwa zveiyi maitiro zvinonyanya yechipiri amine bis-DMPA uye yepamusoro amine tri-DMPA. Parizvino, kugadzirwa kwemumba kweDMPA kunonyanya kutora kettle reaction, uye iyo hydrogenation catalyst ipfuhwe Raney nickel. Kuti udzivise kuumbwa kwechigadzirwa ichi, zvakakosha kuwedzera 12% -16% ye catalyst mass ye caustic alkali aqueous solution kana liquid ammonia, caustic alkali aqueous solution uye liquid ammonia Kushandiswa kuchabudisa huwandu hwakawanda tsvina yemvura uye tsvina yemvura, iyo yakaoma kuderedza uye kugadzirisa, kuwedzera mutoro we post-processing.

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Nguva yekutumira: May-21-2024