Synthesis yealkyl polyglycoside butyl ethers

Chinhu chinogara chichidiwa chealkyl polyglycosides chinowedzerwa furo. Nekudaro, mumashandisirwo mazhinji, chimiro ichi chinoonekwa sechisina kunaka. Naizvozvo, kune zvakare kufarira mukugadzira alkyl polyglycoside kubva kune iyo inosanganisa yakanaka yekuchenesa kuita nekatsika kadiki kekupupa. Tichifunga nezvechinangwa ichi, alkyl polyglycoside butyl ether yakagadzirwa. Iyo inozivikanwa mumabhuku kuti alkyl glycosides inogona kuvharwa nealkyl halides kana dimethyl sulfate mune alkaline aqueous solutions.

Pachiyero cheindasitiri, kuita mumhinduro yeaqueous idambudziko nekuti zvigadzirwa zvakanyungudutswa zvisina mvura hazvigone kuwanikwa pasina mamwe matanho ekushanda. Nokudaro, nzira isina mvura yakagadzirwa, iyo inotsanangurwa muMufananidzo 6. Iyo alkyl polyglycoside inotanga kuiswa mu reactor ine yakawandisa yebutyl chloride uye inopisa kusvika ku80 ℃. Kuita kunotanga nekuwedzera kwe potassium hydroxide sechinhu chinokonzera. Pakupera kwekuita, musanganiswa wekuita hausike, iyo potassium chloride precipitate inosefa uye yakawandisa butyl chloride inobviswa. Chigadzirwa chacho chinoumbwa neakasiyana alkyl polyglycosides uye alkyl polyglycoside butyl ethers. Maererano nekuongorora kweGC, reshiyo yealkyl monoglycoside, alkyl mono-glycoside monobutyl ether uye alkyl monoglycoside polybutyl ether i1:3:1.5.

Iyo nzira yekuita kweiyo etherification yeC₁₂alkyl polyglycoside inoratidzwa muFigure 7. The monoglycoside content inoderera kubva kumativi makumi manomwe kubva muzana kusvika pasi pe20%. Panguva imwecheteyo, kukosha kwe monoether kunokwira kusvika ku50%. Iyo yakawanda monobutyl ether iripo, iyo yakawanda polybutyl ether inogona kuumbwa kubva ipapo. Chete mushure memaawa makumi maviri nemana pane kuumbwa kwakakosha kwe polybutyl ethers. Sezvinotarisirwa, zvirimo zvemapolyethers zvinowedzera nekuwedzera kuita nguva. Zvisinei, kukosha kwe20% hakuna kudarika. Avhareji etherification degree ndeye 1 ~ 3 butyl paalkyl glycoside unit. The reaction effect yeC₁₂alkyl glycoside yaive yakanakisa. Panyaya yeN =8 kana 16 alkyl polyglycoside butyl ether, mhedzisiro yakashata.

Kubva pamienzaniso iyi mitatu zviri pachena kuti zvinobva kune alkyl glycosides zviri nyore kuwanikwa.Kushandiswa kwakakosha kunofungidzirwa kunoenderana nepamusoro-basa rekuita zvezvinobva izvi.