Daim Ntawv Thov

N,N-dihydroxyethyl-p-methylaniline yog ib qho organic intermediate rau dyes, tshuaj, tshuaj tua kab, thiab lwm yam. Cov ester pawg ntawm cov amino pawg kawg ua rau hom dye no muaj cov khoom zoo dua. Nws tau nyob hauv ib qho kev lag luam txij li thaum nws tau npaj. Tam sim no, qhov kev thov hauv tsev yog loj heev, thiab tseem muaj qee qhov kev lag luam muaj peev xwm txawv teb chaws. Kev kawm txog nws cov synthesis thiab cov txheej txheem muaj qhov tseem ceeb heev rau kev lag luam thiab kev xyaum.

Txoj kev sib xyaw ua ke

N,N-dihydroxyethyl-p-methylaniline tuaj yeem ua tau los ntawm cov kauj ruam hauv qab no: Ntxiv 1,000 g ntawm p-methylaniline thiab 10 g dej rau hauv 5L autoclave, cua sov rau 60 ℃ ~ 65 ℃ thiab do rau 30 feeb, tom qab ntawd ntxiv 100 g ntawm ethylene oxide thiab khaws qhov kub ntawm 65 ~ 70 ℃ rau 4 teev. Tom qab ntawd ntxiv 100 g ntawm ethylene oxide hauv 4 teev, khaws qhov kub ntawm 70 ~ 75 ℃, tshuaj tiv thaiv ntawm 70 ~ 80 ℃ rau 3 teev tom qab dhau los, thiab txias rau 30 ℃. Cov tshuaj tiv thaiv tau ntxiv rau hauv lub lauj kaub distillation, thiab cov khoom tau sau ntawm 143-148 ° C (1.3-1.6 kPa), nrog rau cov txiaj ntsig ntawm 86% thiab kev ntshiab ntawm ntau dua 98%. Cov feem pem hauv ntej tuaj yeem rov ua dua tshiab kom nce cov txiaj ntsig. Cov khoom yog cov khoom daj daj.