Abstract: A cost effective process is provided for making stable, efficacious, amino acid and polyhydric alcohol free concentrated aqueous aluminum zirconium salt solutions. Absence of amino acid, low iron content and low trace metal impurity levels improve compatibility with fragrances and minimizes the probability of the product color change and possibly fabric staining significantly. The novel aluminum zirconium actives also minimize iron contribution to underarm area that supports growth of microflora which is responsible for axillary malodour by the biotransformation of nonodorous precursors present in perspiration. The astringent complexes of the present invention may be obtained in solution or dry powder form. As a result, the complexes are satisfactory for use in any of wide variety of conventional antiperspirant forms.

Abstract: Disclosed are aqueous antiperspirant active compositions comprising an admixtures of basic aluminum halides and a metal cation salts which yield enhanced antiperspirant efficacy; and methods of making such antiperspirant compositions. The basic aluminum halides, optionally contain an amino acid or salts of amino acids, and/or antimicrobial agent and are combined with a metal cation antiperspirant (e.g., Ti salt or Hf salt or Sn salt or Zr salt) and optionally with a organic solvent having at least two carbon atoms and at least one hydroxy group and mixtures thereof and methods of making such mixtures. Basic aluminum halides having enhanced antiperspirant efficacy are produced by reacting (a) aluminum powder; (b) an aluminum halide; and (c) water at a temperature greater than about 85° C. This reaction is maintained until reaction products having an Al:halide ratio of about 1.2 to 1.5 and preferably 1.3 to 1.

Abstract: Disclosed are basic aluminum halides having enhanced antiperspirant efficacy; methods of making such materials and antiperspirant compositions containing such basic aluminum halides, and optionally an amino acid, salts of amino acids, antimicrobial agents, or an organic solvent having at least two carbon atoms and at least one hydroxy group and mixture thereof and methods of making such mixtures. Basic aluminum halides having enhanced antiperspirant efficacy are produced by reacting (a) aluminum powder; (b) an aluminum halide; and (c) water at a temperature greater than about 85° C. This reaction is maintained until reaction products having an Al:halide ratio of about 1.2:1 to 1.5:1 and preferably 1.3 to 1.4:1; and a solution solids concentration of about 30-40 weight percent on an anhydrous basis are obtained.

Abstract: Antiperspirant actives that produce practically no visible white residue, even against a black background is provided by the reduction of the particle size, using a refractive index modifier, to a point where the antiperspirant active on application provides no discernible whiteness. When formulated into an antiperspirant stick, the antiperspirant actives produce an improved combination of functional properties, including excellent antiperspirancy, smooth skin feel, nontacky, quick drying and leave no visible residue. The exceptionally high surface area of the antiperspirant active results in rapid and efficient delivery of the active to the sweat glands and possible absorption. The absence or reduced quantity of suspending and flow enhancing agents, of gellant and surfactant, is believed to improve the antiperspirant active's ability to physically reach the sweat glands and improve efficacy.

Abstract: A halogen scavenging system is provided for inhibiting the corrosion-causing tendency and coloration of halogen-containing olefin polymers or copolymers, comprising incorporating about 0.01% to about 1% of a hydroltalcite-like solid solution having the formula Al2(Mg)a(OH)b(CO3)c(G)d.eH2O and a crystallite size in the <003> direction of about 190 Å to about 225 Å, and having bidentate coordination for carbonate ion as shown by an infrared spectrum, and wherein 3≦a≦5.5; 8≦b≦14; 1.2≦c≦3; 0≦d≦1; 1≦e≦10 and G is a surface active agent into the halogen containing olefin polymer.

Abstract: Antiperspirant actives of aluminum and aluminum-zirconium of enhanced efficacy containing strontium and an amino acid that have a stable high HPLC Band III/II ratio are disclosed. The invention also discloses method for making the antiperspirant actives.

Abstract: Antiperspirant actives that produce practically no visible white residue, even against a black background is provided by the reduction of the particle size, using a refractive index modifier, to a point where the antiperspirant active on application provides no discernible whiteness.

Abstract: An improved skin friendly antiperspirant is provided in which a suitable polyhydric alcohol e.g., glycerin, is complexed with the antiperspirant of the type of activated or nonactivated aluminum or aluminum/zirconium salt that are commonly considered antiperspirant active materials and are covered by FDA OTC Tentative Final Monograph as Category I.

Abstract: A halogen scavenging system is provided for inhibiting the corrosion-causing tendency and coloration of halogen-containing olefin polymers or copolymers, comprising incorporating about 0.01% to about 1% of a hydroltalcite-like solid solution having the formula Al2(Mg)a(OH)b(CO3)c(G)d.eH2O and a crystallite size in the <003> direction of about 190 Å to about 225 Å, and having bidentate coordination for carbonate ion as shown by an infrared spectrum, and wherein 3≦a≦5.5; 8≦b≦14; 1.2≦c≦3; 0≦d≦1; 1≦e≦10 and G is a surface active agent into the halogen containing olefin polymer.

Abstract: Basic aluminum halides and nitrates having enhanced antiperspirant efficacy are produced by reacting (a) aluminum powder, (b) an aluminum halide or nitrate solution and (c) water at a temperature greater than about 85.degree. C. This reaction is maintained until reaction products having an Al:anion ratio of about 1.2 to 1.8 and a solution solids concentration of about 30-40 wt. % on an anhydrous basis are obtained. The products are characterized as having a Size Exclusion Chromatography Test Band having a relative retention time corresponding to Band II of a Standard Basic Aluminum Chloride Size Exclusion Chromatogram and a Band II percent aluminum value of at least about 50% and a Band III percent aluminum value of less than 20%.

Abstract: Basic aluminum halides and nitrates having enhanced antiperspirant efficacy are produced by reacting (a) aluminum powder, (b) an aluminum halide or nitrate solution and (c) water at a temperature greater than about 85.degree. C. This reaction is maintained until reaction products having an Al:anion ratio of about 1.2 to 1.8 and a solution solids concentration of about 30-40 wt. % on an anhydrous basis are obtained. The products are characterized as having a Size Exclusion Chromatography Test Band having a relative retention time corresponding to Band II of a Standard Basic Aluminum Chloride Size Exclusion Chromatogram and a Band II percent aluminum value of at least about 50% and a Band III percent aluminum value of less than 20%.

Abstract: Processes are provided for preparing basic aluminum compounds of Formula I:Al.sub.2 (OH).sub.6-a X.sub.a (I)wherein X is Cl.sup.-, Br.sup.-, F.sup.-, I.sup.-, SO.sub.4.sup.= or NO.sub.3.sup.- and a is about 0.9 to 4, the compound being characterized by size exclusion chromatography as having a Band I percent aluminum value of about 5% or less and a Band II percent aluminum value of about 50% to 90%, which comprise (a) suspending an aluminum metal in an aqueous medium to form a slurry, (b) applying ultrasonic energy to the slurry, (c) reacting the sonicated slurry with an aluminum compound of Formula IIAl.sub.n X.sub.m (II)or an acid of Formula III:H.sub.n X (III)wherein X is Cl.sup.-, Br.sup.-, F.sup.-, I.sup.-, SO.sub.4.sup.= or NO.sub.3.sup.-, n is 1 or 2 and m is 3, at a temperature of about 45.degree. C. to 100.degree. C. to form a reaction product.