反应 #2439929

反应方程式

oleic acid

linoleic acid

acetic anhydride

acetic anhydride

acetic anhydride

→

sebacic acid

反应条件

后处理

1. 1
   其他evaporating the solvent to dryness
2. 2
   workup.DISSOLUTIONThe hot clear viscous residue was dissolved in an equal volume of dichloromethane
3. 3
   其他precipitated in a mixture of ether/petroleum ether (1:1 v/v)
4. 4
   过滤The white precipitate was collected by filtration
5. 5
   其他dried by vacuum at room temperature
6. 6
   其他Acetyl terminated fatty acid anhydrides
7. 7
   其他were prepared
8. 8
   温度refluxing for 20 min
9. 9
   其他were prepared
10. 10
    其他evaporating the solvent to dryness
11. 11
    其他to obtain a liquid

实验过程

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.

来源