Patent ID: 11920017
Assignee: NANJING TECH UNIVERSITY
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC B  C | IPC C

Claim 5:
6. The method according to claim 1, wherein, in the step (2), the compound of formula III is prepared by the following process:
(a) dissolving furfuryl alcohol in a reaction solvent, dropwise adding thionyl chloride into the solution at −10° C. to 10° C., continuing stirring and reacting for 0.5 h to 2 h, adding water to quench the reaction, collecting an organic phase, and spin drying the reaction solvent to obtain colorless liquid; and
(b) adding glycerol and sodium into the colorless liquid, continuing stirring and reacting for 3 h to 6 h at 30° C. to 50° C. to obtain the compound of formula III.