Keratin-based products and methods for their productions

Details Keratin-based products and methods for their productions Keratin-based products and methods for their productions

C - Chemistry, Metallurgy

08

H

C08H 1/06 (2006.01) A61K 38/01 (2006.01) C08L 89/04 (2006.01) A61K 47/42 (2006.01)

Patent

CA 2453557

The present invention relates to a process for solubilising keratins from a keratin containing starting material such as poultry feathers. The keratins are may be solubilised using a sulphide under alkaline conditions. In the process the cysteine residues of solubilized keratins are partially modified, e.g. by alkylation. The conditions of solubilisation and partial modification are chosen such that the keratins are also partially hydrolysed. The partially modified and partially hydrolysed keratin may be used as stable dispersions e.g. for the production of films and coatings by casting.

L'invention concerne un procédé permettant de solubiliser les kératines contenues dans un matériau de départ contenant de la kératine comme par exemple les plumes de volailles. Les kératines peuvent être solubilisées au moyen d'un sulfure dans des conditions alcalines. Au cours de ce procédé, les résidus cystéine des kératines solubilisées sont partiellement modifiés, p. ex. par alkylation. Les conditions de solubilisation et de modification partielle sont choisies de manière à causer en outre une hydrolyse au moins partielle des kératines. La kératine partiellement modifiée et partiellement hydrolysée peut être utilisée sous forme de dispersions stables, p. ex. pour la production de films et de revêtements coulés..

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