반응 #2439929

반응 방정식

oleic acid

linoleic acid

acetic anhydride

acetic anhydride

acetic anhydride

→

sebacic acid

반응 조건

후처리

1. 1
   기타evaporating the solvent to dryness
2. 2
   workup.DISSOLUTIONThe hot clear viscous residue was dissolved in an equal volume of dichloromethane
3. 3
   기타precipitated in a mixture of ether/petroleum ether (1:1 v/v)
4. 4
   여과The white precipitate was collected by filtration
5. 5
   기타dried by vacuum at room temperature
6. 6
   기타Acetyl terminated fatty acid anhydrides
7. 7
   기타were prepared
8. 8
   온도refluxing for 20 min
9. 9
   기타were prepared
10. 10
    기타evaporating the solvent to dryness
11. 11
    기타to obtain a liquid

실험 절차

The prepolymer of sebacic acid (SA) was prepared from the purified diacid monomer by refluxing in excess acetic anhydride for 30 minutes and evaporating the solvent to dryness. The hot clear viscous residue was dissolved in an equal volume of dichloromethane and precipitated in a mixture of ether/petroleum ether (1:1 v/v). The white precipitate was collected by filtration and dried by vacuum at room temperature. Acetyl terminated fatty acid anhydrides were prepared by dissolving the acids in acetic anhydride (120° C., 1:5 w/v) and refluxing for 20 min. Acetate anhydrides of oleic acid, linoleic acid and other cis-double bond containing fatty acid were prepared by refluxing the fatty acid in acetic anhydride for 20 min. and evaporating the solvent to dryness to obtain a liquid. Mixed prepolymers of diacids with the monoacid terminals were prepared similarly.

출처