Patent ID: 11926757
Assignee: JIANGSU CANLON BUILDING MATERIALS CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 10:
11. A preparation method for the quick-drying solvent-free sag-resistant polyurethane waterproof coating according to, claim 1, wherein the preparation method comprises the following steps:
(i) preparing polyurethane prepolymer by taking the raw materials of the polyurethane prepolymer, and reacting the polyether diol with the isocyanate until reaction completion, to give Product (1); adding the polyether triol into Product (1) to react until reaction completion, to give Product (2); adding the chain extender into Product (2) to react, to give the polyurethane prepolymer; and
(ii) mixing the polyurethane prepolymer prepared in Step (i) with the rest of the raw materials of the waterproof coating, to obtain the quick-drying solvent-free sag-resistant polyurethane waterproof coating.