Composite coating and preparation method and use thereof
US12398276B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 21, 2022 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Sep 21, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D5/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present disclosure belongs to the technical field of flame-retardant polymers, and in particular, to a composite coating and a preparation method and use thereof. The present disclosure provides a composite coating, including n unit coatings arranged in layers, where n≥1. Each of the unit coatings includes a first coating and a second coating arranged in layers in sequence. The first coating and the second coating both include a water-soluble polymer compound. The water-soluble polymer compound includes an electropositive water-soluble polymer compound or an electronegative water-soluble polymer compound. The water-soluble polymer compounds in the first coating and the second coating have opposite electrical properties. The first coating and/or the second coating further include/includes M(OH)(OCH3), where the M includes one or more selected from the group consisting of Co, Ni, Fe, Mg, Al, and Zn. The composite coating provided by the present disclosure has excellent flame retardancy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.