Digestion of keratin
US9850400B2 · kind B2 · utility
0Cited by
24References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2015 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Nov 15, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to the chemical digestion of keratin, such as avian feathers and wool. The digestion product is made by heating the feathers or wool with a solvent selected from glycols, alkanolamines, polyamines, and combinations thereof. The resulting digested keratin product is a keratin-derived polyol useful for making polymeric materials such as polyurethanes. The digestion products provide a sustainable alternative to petrochemical based intermediates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.