Solid air-improving composition
US4117110A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Apr 14, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L9/048
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A solid air-improving composition comprising a carrier material, a volatile active material gradually evaporating therefrom and a gel formed by a paraffin component and a gelifying metal soap is improved by providing a deodorant agent or an odorant agent or a mixture of these agents as said active material, a liquid paraffin having at 20.degree. C an evaporation number ranging from 8 to 1000 based on the evaporation number at 20.degree. C of diethyl ether being equal one, constituting the paraffin component, the metal soap constituting the non-evaporating carrier material proper, and water in an amount sufficient for complete gelling of the metal soap and liquid paraffin; the active agent evaporates from the composition with preservation of the outer appearance of the latter but with shrinkage of its volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.