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

Claim 6:
7. The method for preparing the polymercaptan compound according to claim 4, wherein in step 3, the hydrolysis reaction is that the second intermediate product was dissolved into an organic solvent, hydrochloric acid or sodium hydroxide is added, above mixture is heated to 50-100° C. to react for 3-12 h, the solvent is removed by distilling at reduced pressure, a product obtained after distillation is washed with a 2-8% sodium bicarbonate solution twice and extracted with trichloromethane, and organic phase is collected and then evaporated to obtain the product as the colorless or faint yellow thick liquid, i.e., the polymercaptan compound.