Aqueous composition for plasticizing paint prior to strip
US6468952B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Nov 22, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D9/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous composition for plasticizing or softening paint, varnish and similar coatings prior to stripping the coating from a surface includes a combination of the active agents, e.g., triethylphosphate and a co-agent selected from dimethyl adipate, 1,2,3-propanetriol triacetate, tri-n-butyl citrate, n-octyl acetate, methyl octanoate and 2-ethyl-l-butanol; as an emulsified hydrophobic phase in which the actives are partitioned between the hydrophobic and aqueous phases. The emulsion is stabilized using a non-ionic water-soluble block copolymer surfactant, being a copolymer of more than one alkylene oxide. The composition may be thickened using rheology control agent. Synthetic smectic clays are particularly suitable. The composition is non-toxic and consists predominantly of water, and yet exhibits effective paint, varnish and lacquer plasticizing/softening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.