Uburyo bwa synthique ya hydroxypropyl methylcellse

Muri rusange, muri synthesis ya hydroxyPropyl methylcellse, pasiporo yatunganijwe ifatwa nigiti cya Alkali kuri 35-10. Shira fibre ya alkali muri kattle ya eritle, ongeraho imyanda ya proglene na methyl chloride na mugitondo, kandi bikarushaho kurenga 50-80 ℃ kumasaha 5 kumuvuduko mwinshi wa 1.8 MPA. Noneho ongeraho umubare ukwiye wa Hydrochloric acide na aside ya oxalique kumazi ashyushye kuri 90 ° C gukaraba ibikoresho kugirango wagure amajwi. Umwuma hamwe na centrifuge. Gukaraba kugeza kutabogamye, mugihe amazi akubiye mu bikoresho ari munsi ya 60%, akama hamwe nijuru rishyushye kuri 130 ° C kugeza munsi ya 5%.
Alkalisation: Ifu ya Potton yatunganijwe nyuma yo gufungura yongewemo muburyo bwa ALKali na Bifashanya na Concetton ya Agent Agent Molekile. Alkali yakoreshejwe muri alkalisation ni hydroxide yicyuma cyangwa ishingiro kama. Umubare wa alkali wongeyeho (na misa, kimwe hepfo) ni inshuro 0.1-0.6 zigera kuri pamba inoze, kandi umubare wamazi yoroshye ni 0.3-1.0 inshuro 0.3-1.0 Indust Solven ni uruvange rwinzoga na hydrocarbon, hamwe nubunini bwa IDERVER PORTON yongeweho ipamba. Inshuro 7-15: Ikintu cya INDven gishobora kandi kuba inzoga hamwe na atome 3-5 (nka alcoanol, propanol), acetone. Irashobora kandi kuba hydrocarbone na hydrocarbone na hydrocarbone; ubushyuhe bugomba kugenzurwa mbere ya 0-35 ° C mugihe cya alkalisation; Igihe cya alkalisation ni 1hr. Guhindura ubushyuhe nigihe gishobora kugenwa hakurikijwe ibisabwa nibicuruzwa.
Guhangana: Nyuma yo kuvura alkalisation, munsi yimyororahamwe, birakorwa no kongeramo umukozi ushishikaye, kandi umukozi ukurikiraho ni imyanda. Kugirango ugabanye gukoresha umukozi ushishikaje, umukozi ukurikiraho yongeyeho kabiri mugihe cyo guhinduranya.