Process for removing and purifying water soluble constituents from a keratin structure

Claim 1

A PROCESS FOR REMOVING AND PURIFYING A WATER SOLUBLE MATERIAL FROM A KERATIN STRUCTURE, COMPRISING THE STEPS OF DISSOLVING THE WATER SOLUBLE CONSTITUENTS FROM THE KERATIN STRUCTURE IN AN AQUEOUS MEDIA, ADJUSTING THE TEMPERATURE OF THE AQUEOUS MEDIA TO A TEMPERATURE IN THE RANGE OF 15*C. TO 25*C. TO PRECIPITATE A FIRST FRACTION, SEPARATING THE FIRST FRACTION FROM THE AQUEOUS MEDIA, REMOVING A SECOND FRACTION FROM THE AQUEOUS MEDIA BY ADSORBING THE SECOND FRCATION ON A CATION EXCHANGE RESIN IN ACID FORM AT A PH UP TO 7.0, FREEING SAID SECOND FRACTION FROM THE ION EXCHANGE RESIN AT A PH UP TO 8.0 BY PASSING AN IONIZABLE ALKALINE MATERIAL OVER SAID RESIN TO PROVIDE A SOLUTION OF SAID SECOND FRACTION IN SAID ALKALINE MATERIAL, CONCENTRATING THE ALKALINE SOLUTION TO AT LEAST 50% SOLUTION, AND LOWERING THE PH OF THE ALKALINE SOLUTION INTO A VALUE IN THE RANGE OF 4.0 TO 6.8 TO THEREBY FREE THE AMINO ACIDS PRESENT IN SAID SOLUTION, SAID SOLUTION BEING A PURIFIED TOPICAL WATER CONTROL MATERIAL.