Intumescent coating composition
US10442937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2016 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Apr 24, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2150/60
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An intumescent coating composition that includes an epoxy resin binder, an epoxy reactive diluent, a curing agent and an acid catalyst. The curing agent includes a mixture of polyimide, polyetheramine, and an amine functional monomer, wherein the amine multifunctional monomer is different from the polyetheramine. The acid catalyst is effective to form a phosphoric acid on thermal decomposition. The coating composition has a viscosity of between 20,000 and 140,000 mPa/s at 20° C. and shear rate 1.5 s−1 when measured within 1 minute of mixing the components. The invention also includes a coated substrate having the intumescent coating composition coated on at least a portion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.