Patent ID: 6316598
Filing Date: 2001-11-13
Classification: A61F,A61K,A61L,A61Q,Y10S

Abstract:
A process for making a hydratable keratin solid comprising:oxidizing insoluble keratin in a first solution comprising a soluble oxidizing agent, such that a portion of the disulfide bonds of said insoluble keratin are oxidized to form sulfonic acid residues, to obtain an oxidized insoluble solid fraction;separating said oxidized insoluble solid fraction from said first solution;contacting said oxidized insoluble solid fraction with a second solution comprising monovalent cations dissolved in a solvent;maintaining said second solution containing said oxidized insoluble solid fraction and said monovalent cations for a time and at a temperature effective to cause an interaction between said sulfonic acid residues and said monovalent cations to obtain a salt suspension of said insoluble keratin and said monovalent cations; andsubstantially removing the solvent from said salt suspension to obtain a hydratable insoluble keratin solid.