Aqueous composition for removing coatings
US6339053B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2000 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Nov 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D9/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous composition for softening or removing organic coatings comprises: (a) an effective amount of a mixture of (a1) at least one non-toxic compound of formula (I). Wherein R, R1 and R2 which may be the same or different, represent lower alkyl, phenyl or lower alkyl-phenyl groups (e.g. triethlyphosphate) and (a2) at least one non-toxic lower alkyl ester of a C2-20 carboxylic acid or at least one non-toxic C4-12 alkanol (e.g. diethyl succinate, diethyl succinate, diethyl adipate. 1,2,3-propanetriol triacetate, tri-n-butyl citrate, n-octyl acetate or methyl octanoate)(b) an effective amount of at least one surfactant to allow the composition to exist as a stable emulsion. The surfactant(s) being selected nonionic water-soluble block compolymers of more than one alkylene oxide (e.g. Synperonic PE™ (F-series)): and (c) water, characterized in that component (c) (water) is present in an amount of less than about 50% by weight and/or volume of component (a) and in that the composition exists as a stable microemulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.