Composition and method of use for an internally-carbonating non-surfactant cleaning composition
US5718729A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1994 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Nov 7, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/265
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Carpeting, upholstery, drapery and other textile fibers are cleaned by applying to the fibers, at ambient pressures, an aqueous, chemically carbonated cleaning composition prepared by admixing a carbonate salt solution, and an acid solution, such that the acid reacts with the carbonate salt to produce carbon dioxide coincident with application to a textile to be cleaned. Citric acid and sodium carbonate are the preferred acid and carbonate salt. In a preferred embodiment, urea is added to the acid solution to prevent yellowing and to improve cleaning ability. The compositions are preferably prepared and applied at an elevated temperature in the range of between about 140.degree. and 200.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.