Single phase aqueous surfactant-free nontoxic air freshening composition and wick-containing air freshening device using said composition
US6506723B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L9/01
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Described is a single phase aqueous surfactant-free nontoxic air freshening composition containing 30-70% water, 5-20% of a fragrance, at least 60% of the components of which has a C log10 P≦2.5 and 30-60 weight percent of a mixture of two glycol ether components:(i) dipropylene glycol methyl ether; and(ii) propylene glycol propyl ether or propylene glycol butyl ether.Also described is an air freshener device comprising a vessel for the aforementioned composition, an emanating surface and a wick for supplying the composition to the emanating surface. In another embodiment of the invention is a stain removal wipe, which contains a fragrant aqueous system with low solvent and substantially free of surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.