Digestion of keratin
AssigneeResinate Materials Group, Inc.
InventorsRick Tabor, Eric David Vrabel, Matthew J Beatty, Jack Rogers Kovsky
Life of this patent
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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.
Claims6
A polyurethane made from a keratin-derived polyol, said polyol comprising recurring units of:
- (a) (i) a linear or branched, aliphatic or cycloaliphatic compound or mixture of compounds having two or more hydroxyl groups, (ii) an alkanolamine, (iii) a polyamine, or combinations thereof, and
- (b) an intermediate made by digesting a keratin source.
A polyurethane comprising a keratin-derived polyol, said polyol comprising recurring units of:
- (a) (i) a linear or branched, aliphatic or cycloaliphatic compound or mixture of compounds having two or more hydroxyl groups, (ii) an alkanolamine, (iii) a polyamine, or combinations thereof, and
- (b) an intermediate made by digesting a keratin source.
A coating made from a keratin-derived polyol, said polyol comprising recurring units of:
- (a) (i) a linear or branched, aliphatic or cycloaliphatic compound or mixture of compounds having two or more hydroxyl groups, (ii) an alkanolamine, (iii) a polyamine, or combinations thereof, and
- (b) an intermediate made by digesting a keratin source.
A coating comprising a keratin-derived polyol, said polyol comprising recurring units of:
- (a) (i) a linear or branched, aliphatic or cycloaliphatic compound or mixture of compounds having two or more hydroxyl groups, (ii) an alkanolamine, (iii) a polyamine, or combinations thereof, and
- (b) an intermediate made by digesting a keratin source.
A polymeric foam made from a keratin-derived polyol, said polyol comprising recurring units of:
- (a) (i) a linear or branched, aliphatic or cycloaliphatic compound or mixture of compounds having two or more hydroxyl groups, (ii) an alkanolamine, (iii) a polyamine, or combinations thereof, and
- (b) an intermediate made by digesting a keratin source.
A polymeric foam comprising a keratin-derived polyol, said polyol comprising recurring units of:
- (a) (i) a linear or branched, aliphatic or cycloaliphatic compound or mixture of compounds having two or more hydroxyl groups, (ii) an alkanolamine, (iii) a polyamine, or combinations thereof, and
- (b) an intermediate made by digesting a keratin source.
Dependencies are inferred from the claim text.