Color changing paint and varnish remover
US8198226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2010 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Jan 27, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D9/005
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A color change paint and varnish removal formulation is provided. The formulation comprises: at least one penetrant, at least one water insoluble carrier, at least one color visible colorant, at least one thickening agent, at least one wetting agent, and at least one activator, whereby the formulation is applied to the target area and as the surface of the formulation dries, the penetrant migrates away from the dehydrating surface and a surface crust of beads is formed; the beads have a particle size that allows the scattering of visible light into white light and produces the whitening and dilution of the visible color and thus, there is a color change to indicate that the stripping action of the formulation has ceased and is ready for the scraping and removal step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.