Propylene glycol yog ib yam khoom uas koj nquag pom hauv cov khoom xyaw ntawm cov tshuaj pleev ib ce rau kev siv txhua hnub.Qee qhov tau sau tias yog 1,2-propanediol thiab lwm tus li1,3-propanediol hmoov, yog li qhov txawv?
1,2-Propylene glycol, CAS No.Nws yog cov kua uas tsis muaj xim tsis muaj kuab paug hauv lub xeev ib txwm muaj, ze li tsis muaj ntxhiab thiab me ntsis qab zib ntawm cov ntxhiab tsw zoo.
Nws tuaj yeem siv los ua tus neeg sawv cev ntub dej hauv cov tshuaj pleev ib ce, tshuaj txhuam hniav thiab xab npum ua ke nrog glycerin lossis sorbitol.Nws yog siv los ua wetting thiab leveling tus neeg sawv cev nyob rau hauv cov plaub hau dyes thiab ua antifreeze tus neeg saib xyuas.
1,3-propyleneGlycol, CAS No.
Nws tuaj yeem siv rau hauv kev sib txuas ntawm ntau hom tshuaj, polyester PTT tshiab, tshuaj intermediates thiab cov tshuaj antioxidants tshiab.Nws yog cov khoom siv raw rau kev tsim cov khoom siv tsis zoo polyester, plasticizer, surfactant, emulsifier thiab emulsion breaker.
Ob leeg muaj tib cov qauv molecular thiab yog isomers.
1,2-Propylene glycol yog siv los ua cov tshuaj tua kab mob los yog kev nkag mus rau hauv cov tshuaj pleev ib ce ntawm qhov siab.
Nyob rau hauv qis concentrations, nws yog feem ntau siv los ua ib tug moisturizer los yog cleansing pab.
Nyob rau hauv qis concentrations, nws yuav siv tau raws li ib tug pro-solvent rau active cov khoom xyaw.
Cov tawv nqaij khaus thiab kev nyab xeeb ntawm cov concentration sib txawv yog txawv kiag li.
1,3-Propylene glycol feem ntau yog siv los ua cov kuab tshuaj hauv tshuaj pleev ib ce.Nws yog cov organic polyol moisturizing hnyav uas pab cov khoom xyaw kom zoo nkauj nkag mus rau hauv daim tawv nqaij.
Nws muaj zog moisturizing ntau dua li glycerin, 1,2-propanediol thiab 1,3-butanediol.Nws tsis muaj qhov nplaum, tsis muaj qhov kub hnyiab, thiab tsis muaj teeb meem khaus.
Cov txheej txheem tseem ceeb ntawm 1,2-propanediol yog:
1. propylene oxide hydration txoj kev;
2. Propylene ncaj qha catalytic oxidation txoj kev;
3. Ester pauv txoj kev;4.glycerol hydrolysis synthesis txoj kev.
1,3-Propylene glycol yog tsim los ntawm:
1. Acrolein aqueous txoj kev;
2. Ethylene oxide txoj kev;
3. Glycerol hydrolysis synthesis txoj kev;
4. Cov txheej txheem microbiological.
1,3-Propylene glycol yog kim dua 1,2-Propylene glycol.1,3-propyleneglycol yog ib qho nyuaj me ntsis los tsim thiab muaj cov txiaj ntsig qis dua, yog li nws cov nqi tseem siab.
Txawm li cas los xij, qee cov ntaub ntawv qhia tau hais tias 1,3-propanediol tsis tshua khaus thiab tsis xis nyob rau ntawm daim tawv nqaij dua li 1,2-propanediol, txawm tias mus txog qib tsis muaj qhov tsis xis nyob.
Yog li ntawd, nyob rau hauv xyoo tas los no, qee cov tuam ntxhab tau hloov 1,2-propanediol nrog 1,3-propanediol hauv cov khoom xyaw kom zoo nkauj kom txo tau qhov tsis xis nyob uas yuav tshwm sim rau ntawm daim tawv nqaij.
Cov tawv nqaij tsis xis nyob los ntawm cov tshuaj pleev ib ce yuav tsis tshwm sim los ntawm 1,2-propanediol lossis 1,3-propanediol ib leeg, tab sis kuj tuaj yeem tshwm sim los ntawm ntau yam.Raws li tib neeg lub tswv yim ntawm kev noj qab haus huv thiab kev nyab xeeb tob zuj zus, kev xav tau ntawm kev lag luam muaj zog ntxiv yuav ua rau ntau lub tuam txhab tsim cov khoom zoo dua kom tau raws li qhov xav tau ntawm feem ntau ntawm cov neeg nyiam kev zoo nkauj!
Post lub sij hawm: Sep-29-2021