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Qhov sib txawv ntawm 1,2-propanediol thiab 1,3-propanediol hauv cov tshuaj pleev ib ce

Propylene glycol yog ib yam khoom koj feem ntau pom nyob rau hauv cov npe tshuaj pleev ib ce rau kev siv txhua hnub. Ib co yog sau npe li 1,2-propanediol thiab lwm tus li1,3-propanediol, yog li cas yog qhov sib txawv?
1,2-propylene glycol, CAS A.6, molecular cov kab mis c3h8o2, yog tshuaj lom neeg, tsis pub lwm tus muaj kuab, thiab ntau cov kuab tshuaj muaj organic. Nws yog cov kua tsis muaj kob uas tsis muaj kob hauv lub xeev ib txwm muaj, ze li tsw ntxhiab thiab me ntsis qab zib ntawm kev hnov ​​tsw zoo.
Nws tuaj yeem raug siv ua cov tshuaj tiv thaiv ntub dej hauv cov tshuaj pleev ib ce, tshuaj txhuam hniav thiab xab npum ua ke nrog glycerab. Nws yog siv los ua ntub dej thiab leveling saib xyuas cov plaub hau zas thiab raws li cov tshuaj tiv thaiv kab mob.
1,3-propyleneGlycol, CASA4-63-2, molecular tus qauv yog c3h8o2, yog xim paug, ua kom muaj zog, ua kom tiav nrog ethanol, ether.
Nws tuaj yeem siv nyob rau hauv synthesis ntawm ntau hom tshuaj, tshiab polyester ptt, cov tshuaj hauv nruab nrab thiab cov tshuaj tua kab mob tshiab. Nws yog cov khoom siv raw rau kev tsim cov khoom siv tsis tau muaj txiaj ntsig, yas txias, surfactant, emulsifier thiab emulsion breaker.
Ob qho tib si muaj tib cov mis molecular thiab yog isomers.
1,2-propylene glycol yog siv los ua tus neeg sawv cev antibacterial lossis tus neeg nkag mus hauv prepoter hauv cov tshuaj pleev ib ce ntawm cov tshuaj pleev ib ce.
Ntawm cov qis dua, feem ntau nws yog feem ntau siv los ua cov moisturizer lossis kev ntxuav kom huv.
Ntawm cov qis qis dua, nws tuaj yeem siv ua ib qho kev tiv thaiv tau-hnyav rau cov khoom xyaw nquag.
Daim tawv nqaij tawv nqaij thiab kev nyab xeeb ntawm ntau lub siab yog txawv.
1,3-propylene glycol yog siv los ua cov kuab tshuaj hauv cov tshuaj pleev ib ce. Nws yog ib lub polyol polyol moisturizing cov kuab tshuaj uas pab cov tshuaj pleev ib ce nkag mus rau hauv daim tawv nqaij.
Nws muaj ntau dua moisturizing zog dua glycerin, 1,2-propanediol thiab 1,3-butanediol. Nws tsis muaj qhov nplaum, tsis muaj kev kub ntxhov, thiab tsis muaj teeb meem rau kev cuam tshuam.
Cov txheej txheem ntau lawm ntawm 1,2-propanediol yog:
1. Propylene oxide olration txoj kev;
2. Propylene ncaj qha catalytic oxidation txoj kev;
3. Ester sib pauv qauv; 4.glycerol hydrolyry synthesis txoj kev.
1,3-propylene glycol yog mas ua los ntawm:
1. Acrousin aqueous;
2. Ethylene oxide txoj kev;
3. Glycerol hydrolyryfy synthesis txoj kev;
4. Microbiological txoj kev.
1,3-propylene glycol yog kim dua 1,2-propylene glycol.1,3-propyleneGlyCol yog qhov nyuaj me ntsis tsim thiab muaj cov txiaj ntsig qis dua, yog li nws tus nqi tseem muaj siab.
Txawm li cas los xij, qee cov ntaub ntawv qhia tau hais tias 1,3-propanediol yog tsawg dua kev ua kom tawv nqaij dua 1,2-propanediol, txawm tias nce qib tsis muaj kev xav txawv txav.
Yog li ntawd, nyob rau hauv xyoo tsis ntev los no, qee cov tuam ntxhab tau hloov 1,2-propanediol nrog 1,3-propanediol hauv cov tshuaj pleev ib ce kom txo tau cov 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 tseem yuav tshwm sim los ntawm ntau yam. Raws li tib neeg lub tswvyim ntawm kev kho kom zoo nkauj thiab kev nyab xeeb kev nyab xeeb yuav ua rau muaj cov khoom lag luam zoo dua kom tau raws li cov kev xav tau ntawm feem ntau ntawm cov kev nyiam kev zoo nkauj!


Lub sijhawm Post: Sep-29-2021