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Patent Review

May 1, 2009

Grant Patents Gransil EPSQ Powder Technology

Grant Industries, Inc., Elmwood Park NJ, has been awarded a patent for its Gransil EPSQ powder technology, leading to a new class of sponge-like cosmetics. (At press time, the final patent number had yet to be published.)

Cosmetic grade polydimethylsiloxane and polymethylsilsesquioxane (PMSQ) are entwined in a process that produces a finely divided porous particle using interpenetrating polymer network (IPN) synthesis, which is not a simple mixture of two polymer materials.The characteristic and physical properties of each individual network are changed, resulting in a new material with novel properties. In comparison with pure silicone elastomers, it features a drier, more slippery feel after being dispersed in cyclomethicone or low viscosity silicone fluids. In addition, it provides a higher oil absorption capacity and an increased compatibility with vegetable oils. Optimal performance is achieved when Gransil EPSQ is combined with low viscosity silicone or hydrocarbon fluids. It can be dispersed by sprinkling it into a fluid with vigorous mixing.

Grant has posted demo formulas on its website with excellent optical blurring effect for wrinkles and sebum absorption for matte finish for inclusion in unique “mousse” texture cosmetics.

More info:

Hair Cleanser Patented By Kao

U.S. Patent No. 7,507,696 B2;
KPSS-Kao Professional Salon Services GmbH, Darmstadt, Germany, has patented a cleansing composition for keratin fiber, especially human hair. It is comprised of at least one anionic, nonionic or amphoteric surfactant at a concentration of 5-50% by weight calculated to total composition, at least one monoglyceride having 12-22 carbon atoms in fatty acid moiety and at least one compound comprising a silicone polymer, a quaternary ammonium group and a polyether group in its molecule. The concentration of the organic solvent in the composition does not exceed 5%.

Water Soluble Container with Hard Surface Cleaner

U.S. Patent No. 7,507,699 B2;
Reckitt Benckiser has patented a water-soluble container with a single pocket or single receptacle part that contains a hard surface cleaning composition in powder form. The pocket is sealed by film or closure part which is comprised of at least one cationic surfactant having germicidal properties in which the cationic surfactant is present in an amount of 1-6%; at least one nonionic surfactant (6-20%); an organic acid selected from citric acid, lactic acid, adipic acid, succinic acid, and mixtures thereof, in which the organic acid is present in an amount up to 25%; an alkali salt, selected from carbonates, bicarbonates, sulfates and mixtures (45-90%); and optionally, up to approximately 10% of one or more conventional additives selected from coloring agents, fragrances and fragrance solubilizers, pH adjusting agents and pH buffers including organic and inorganic salts, optical brighteners, opacifying agents, antifoaming agents, enzymes, anti-spotting agents, antioxidants and anti-corrosion agents.

The hard surface cleaning composition in powder form necessarily is comprised of coated citric acid. When the water-soluble container is immersed in water, at least a part of the water-soluble container dissolves releasing the composition which effervesces in water, and wherein the resultant aqueous mixture formed is at a pH of greater than 7.

Striped Personal Cleanser Liquid with Phases

U.S. Patent No. 7,511,003 B2; The Procter & Gamble Company earned a U.S. patent for a personal cleanser with a package containing a personal cleansing composition. The first stripe is comprised of a cleansing phase containing a surfactant, an electrolyte comprising an anion selected from the group consisting of phosphate, chloride, sulfate, citrate and mixtures thereof and a cation selected from the group consisting of sodium, ammonium, potassium, magnesium and mixtures thereof, a density modifier comprising a low density microsphere and water. The electrolyte is present from approximately 0.1%-15% by weight of the first stripe. At least one additional stripe is comprised of a benefit phase that is substantially free of surfactant and substantially anhydrous and is comprised of at least 20% of the benefit phase of a hydrophobic skin benefit agent having a Vaughan Solubility Parameter from 5-15 (cal/cm3)0.5. The first stripe and the additional stripe have substantially the same density.

Unilever Patents Deodorant Composition

U.S. Patent No. 7,510,704 B2; Unilever Home & Personal Care USA has patented a cosmetic composition that is comprised of an antimicrobial active capable of providing sub-lethal inhibition of fatty acid catabolism by corynebacteria. The antimicrobial active is comprised of 4-hydroxy-3-methoxybenzyl alcohol (0.1-0.5%); a structurant (1-30%); an emulsifier (0.1-10%); and an antiperspirant active (5-30%). The composition is topically administered to the human body as a deodorant in the form of a solid stick, soft solid, cream or gel.

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