Patent ID: 11919842
Assignee: WELDTONE TECHNOLOGY CO., LTD
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. The method for preparing the polymercaptan compound according to claim 4, wherein in step 1, the substitution reaction is that the phenol compound represented by formula (II) is dissolved into an organic solvent, an alkali is added to provide an alkaline condition, the phase transfer catalyst is added, then above mixture is heated to 40-100° C. under the protection of an inert gas and stirred for 10-60 min, subsequently the first compound represented by formula (III) is added to react for 4-12 h, then a reaction solution is filtered, filtrate is distilled at reduced pressure to remove a solvent, washed with water three times and extracted with trichloromethane, and an organic phase is collected and evaporated to obtain the first intermediate product as the colorless or faint yellow liquid.