Process for preparing alcohol soluble condensates of abietic acid and a protein hydrolsate
AssigneeInolex Corporation
InventorsVernon L. Johnsen, Elaine S. Stern
Life of this patent
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Abstract
Resin-forming condensates of abietic acid and a protein hydrolysate are prepared which are completely soluble in absolute alcohol at a concentration of about 2 percent. An aqueous solution of a water soluble salt of a condensate of abietic acid with a protein hydrolysate is acidified from a pH above about 6 to a pH in the range of about 4 to 5 to precipitate a portion of the condensate while leaving another portion thereof in solution. The precipitated solution of the condensate is the alcohol soluble product of the process.
Claims6
A process for making a solution for the treatment of hair comprising:
- forming a solution in absolute alcohol at a concentration in the range of about 0.5 percent to about 5 percent by weight of a portion of an abietic acid condensate of a protein hydrolysate having complete solubility in absolute alcohol at a concentration of about 2 percent, said portion having been separated from said condensate by acidifying an aqueous solution of about 5 to about 25 percent by weight of a water soluble salt of a condensate with abietic acid of a protein hydrolysate having an average molecular weight in the range of about 300 to about 600 from a pH above about 6 to a pH in the range of about 4 to about 5 to precipitate a portion of the condensate while leaving another portion thereof in solution;
- and separating the precipitated portion of the condensate from the acidified aqueous solution as a product of the process.
A method of making a hair spray comprising:
- forming a solution in absolute alcohol at a concentration of about 0.5 to about 5 percent by weight of a portion of an abietic acid condensate of a protein hydrolysate and pressurizing the solution to a total pressure of about 50 p.s.i. when determined at room temperature with a halogenated alkane containing 1-5 carbon atoms, said portion having been separated from said condensate by acidifying an aqueous solution of about 5 to about 25 percent by weight of a water soluble salt of a condensate with abietic acid of a protein hydrolysate having an average molecular weight in the range of about 300 to about 600 from a pH above about 6 to a pH in the range of about 4 to about 5 to precipitate a portion of the condensate while leaving another portion thereof in solution;
- and separating the precipitated portion of the condensate from the acidified aqueous solution as a product of the process.
Dependencies are inferred from the claim text.