HOOC (CH2) 8COOH tseem hu ua sebaceous acid.Pure dawb flake siv lead ua, muaj cov khoom lag luam nrog lub teeb daj, yaj ntawm 134.5 mel .Nws yog feem ntau ua los ntawm cov roj taum, uas yog ib qho ntawm cov khoom siv ua liaj ua teb thiab hav zoov.
Sebacic acid tau ua ntej tau los ntawm distillation ntawm castor roj nrog alkali. Tom qab ntawd, cov txheej txheem hluavtaws tau tsim los.Thaum tam sim no, cov qauv siv alkali hydrolysis ntawm cov roj taum castor yog cov kev ua kom muaj kev sib xyaw cov roj taum castor thiab cov kua roj alkali ntawm 100 ℃ los tsim cov roj castor sodium thiab glycerin.Sodium ricinoleate tau sib cais thiab sulfuric acid tau ntxiv los ua cov tshuaj ricinoleic acid, thiab tom qab ntawd alkali hydrolysis cov tshuaj tiv thaiv tau ua nrog cov tshuaj tiv thaiv kev ntsuas kub ntawm 260 ~ 280 ℃, siv lub siab qis lossis siab siab.Qhov cov tshuaj tiv thaiv ua rau disodium sebacate, 2-octanol thiab hydrogen.Finally, cov khoom tau nruab nrab los ntawm sulfuric acid. , txiav txim siab, muaju thiab qhuav.
Tuam Tshoj yog cov khoom lag luam castor roj lub teb chaws, cov roj taum castor tsim tawm txhua xyoo ntau tshaj 100,000 tons, yog li cov neeg tsim khoom feem ntau siv cov roj castor ua cov khoom siv ntau lawm ntawm sebacic acid.Yog ib txwm muaj kev xa khoom ntawm Suav teb, txhua xyoo tso zis ntawm dihydrosolic acid tau mus txog 10,000 tons, lav txog li 1/3 ntawm lub ntiaj teb xav tau cov dihydrosolic acid.
Sebacic acid yog dav siv, feem ntau yog siv los ua cov sebacic acid ester chav kawm, xws li sebacic acid dioctyl ester tuaj yeem siv los ua yas, txias roj hmab plasticizer, kuj tuaj yeem siv los ua polyamide, polyurethane, alkyd resin, hluavtaws lubricating roj, lubricating roj additive.Epoxy curing agent polydecaneic anhydride, ntxiv rau cov txuj lom, tshuaj pleev ib ce, tshuaj pleev ib ce, thiab lwm yam.
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