The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2002
Filed:
May. 23, 2001
Thomas Lee Harper, Middletown, NY (US);
Shailesh Mehta, Port Jervis, NY (US);
Allan Herbert Rosenberg, South Orange, NJ (US);
Somerville Technology Group, Inc., Huguenot, NY (US);
Abstract
Disclosed is process of making stable antiperspirant active solutions, which process comprises the steps of: (A) preparing an aqueous solution comprising an aluminum-containing antiperspirant active, water, and an anhydrous solvent having a solubility parameter of from about 9 (cal/cm ) to about 15 (cal/cm ) ; (B) spray-drying the aqueous solution to form a solid powder comprising aluminum-containing antiperspirant active and the anhydrous solvent; and (C) dissolving the solid powder in a second anhydrous solvent at a temperature of not more than 85° C., the second anhydrous solvent comprising a 1,2-diol solvent having at least 4 carbon atoms, to form a stable antiperspirant active solution comprising solubilized aluminum-containing antiperspirant active and the 1,2-diol solvent. The stable antiperspirant active solutions are especially useful as manufacturing intermediate materials that provide improved formulation flexibility when preparing antiperspirant consumer products, especially those products that are clear or translucent in appearance.