Patent ID: 11945775
Assignee: WANHUA CHEMICAL GROUP CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A preparation method for a stable dispersant, comprising:
1) Contacting a polyol with a dianhydride compound for reaction to prepare an adduct; and
2) performing a ring-opening addition reaction on the adduct obtained in step 1) and an epoxy compound to prepare a stable dispersant;
wherein the dianhydride compound does not contain a double bond that may copolymerize with an olefinically unsaturated monomer while the epoxy compound contains a double bond that may copolymerize with an olefinically unsaturated monomer, and the polyol is a polyester polyol and/or a polyether polyol.