Abstract: The present invention describes a method and compositions by which introducing PO4?3 ion at particular stage in the preparation of aluminum/zirconium solutions surprisingly results in significantly improved zirconium molecular weight stability.

Abstract: The present invention describes a method and compositions by which introducing PO4?3 ion at particular stage in the preparation of aluminum/zirconium solutions surprisingly results in significantly improved zirconium molecular weight stability.

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/cm3)0.5 to about 15 (cal/cm3)0.5; (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.

Abstract: The present invention process involves the exposure of antiperspirant salt solutions to ultraviolet light to cause lightening in color. The ultraviolet light can be in the wavelength range of 180 to 400 nanometers, with the longer wavelengths preferred and at an exposure time of 1 to 120 minutes. The color of the antiperspirant solutions treated with ultraviolet light approaches the color of water, commonly known in the cosmetic industry as water white. These exceptionally low color antiperspirant salt solutions are useful in development of clear and colorless antiperspirant gels, roll-ons and stick formulations.

Abstract: A method of producing activated metal salts useful in antiperspirant compositions is disclosed. The method produces the salt through an acid base reaction wherein an acid is reacted with a metal in basic form. Preferred metals include aluminum and zirconium. Activate aluminum-zirconium hydrohalide and activated aluminum-zirconium-amino acid salts can also be produced by the method of this invention.

Abstract: The present invention is directed to a method of preparing sodium aluminum lactate by reacting aluminum lactate with sodium hydroxide is an aqueous medium. The reaction is carried out within the temperature range of about 20.degree. C. to about 80.degree. C. The weight ratio of aluminum lactate to sodium hydroxide is about 5.0:1 to about 8.0:1. The weight ratio of water to sodium hydroxide is about 0.8:1 to about 2.3:1.

Abstract: This invention pertains to a process for preparing concentrated aluminum-zirconium-glycine solutions by forming a zirconium chloride complex, adding glycine to the complex and forming coordinate bonds between the zirconium chloride complex and the glycine and blending the resulting mixture with an aqueous aluminum chlorohydrate solution. Solutions which contain 45-50% solids can be produced. The solutions have shown to be stable at room temperature for greater than 3 months.

Abstract: Novel aluminum and aluminum-zirconium salts are produced by reacting aluminum or aluminum-zirconium halohydrate with an anionic lipophilic component. These salts are useful in antiperspirant compositions or as rheological additives. Also disclosed is a novel process of producing oil-in-water emulsions whereby the novel aluminum or aluminum-zirconium salt functions as a surfactant upon forming.

Abstract: This invention pertains to a method of making non-aqueous solutions of aluminum and aluminum-zirconium compounds. The non-aqueous solutions are produced by: (A) protonating a hydroxylated solvent, such as ethanol or propylene glycol, by adding an acid selected from ZrOCl.sub.2, ZrO(OH)Cl, ZrCl.sub.4, AlCl.sub.3, HCl, HI, HBr, HNO.sub.3, and mixtures thereof to the hydroxylated solvent; and (B) adding at a controlled rate to protonated solvent aluminum chlorohydrate, Al.sub.2 (OH).sub.a Cl.sub.6-a, wherein a has the value of greater than 0 but less than 6; until the desired solution is formed. The non- aqueous solutions are useful in antiperspirant compositions.