Permanent waving composition
US5352443A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | May 25, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/498
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An improved permanent waving lotion is attained by incorporating into an otherwise conventional composition an organic compound having at least one function position definable as an alpha, beta-unsaturated ketone in conjunction with a carbon-carbon double bond. By employing the present invention, improved curl formation is attained and the malodor typically associated with permanently waved hair is substantially eliminated. Compounds incorporating the desired alpha, beta-unsaturated ketone can be used directly, in the permanent waving lotion, or chemical precursors can be employed to produce the desired alpha, beta-unsaturated ketone when exposed to oxidation or to alkaline materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.