Paint stripping composition and method of making and using the same
US4749510A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D9/005
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A paint stripper composition comprising a mixture of N-methyl-2-pyrrolidone and an aromatic, high flash hydrocarbon solvent applied to a painted surface for stripping paint. Accelerators useful in the mixture are an organic acid such as formic acid or an amine such as monoethanolamine. The paint stripper composition may also include an oil soluble surfactant to aid in wetting the surface of the object to be stripped. Also, a water soluble surfactant may be added to facilitate water rinsing the composition and loosened paint from the surface. The paint stripper may be thickened by addition of ethylcellulose to form a paint stripping composition having a thickness appropriate for immersion, spray, brush or knife application. The composition of the paint stripper may comprise from 20-90% by weight of N-methylpyrrolidone, 30-70% by weight 140.degree. F. flash aromatic hydrocarbon solvent, 2-15% by weight formic acid, 0-3% by weight corrosion inhibitor, 0-5% by weight oil soluble nonionic surfactant and 2-6% by weight of water soluble nonionic surfactant and from 0-6% by weight of ethylcellulose. Instead of the acid and corrosion inhibitor, an amine may be added as an accelerator in the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.