Odorless thiols for permanent waving, straightening and depilatory applications
US12398104B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Apr 26, 2018 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Dec 9, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/42
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Described herein is a chemical class of odorless thiols which can serve as reducing agents. This chemical class involves thiols which can be used as reducing agents for permanent styling treatments, depilatory compositions and other applications. The odorless thiols are thiols having a heterocyclic quaternary ammonium salt in their molecule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.