Ionic aqueous epoxy curing agent, preparation method therefor and use thereof
US11597796B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 19, 2019 |
| Grant date | Mar 7, 2023 |
| Priority date | — |
| Expiry date | Apr 22, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/50
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ionic aqueous epoxy curing agent, a preparation method therefor and the use thereof. The aqueous epoxy curing agent is prepared by reacting the following raw materials in parts by weight: a) 1 part of a polyepoxy compound, b) 1.3-6 parts of a multifunctional compound, c) 0.2 to 1.25 parts of a monoepoxy compound, and d) 0.01 to 0.23 parts of a sultone, wherein the multifunctional compound has four or more active hydrogens. The curing agent obtained has a good hydrophilic effect and very good thinning performance, the paint film prepared by mixing same with an epoxy dispersion has the following advantages: excellent salt spray resistance and water resistance, strong adhesion, high hardness, etc.; in addition, the preparation process of the curing agent is simple, the conditions are mild, and room temperature curing is carried out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.