Patent Picks—Esters for Feel, UV Protection, Salt-free Thickening and More

Chosen biweekly by Rachel Grabenhofer, senior editor, for their relevance to personal care, Patent Picks are taken from publicly available sources. This edition features recently issued patents relevant to bath, shower, hygiene and cleansing applications.

Cosmetic compositions comprising esters based on 2-propylheptanoic acid
US Patent Application 20100209462
Publication date: Aug. 19, 2010
Assignee: Cognis IP Management GmbH

Cognis GmbH has patented an invention relating to esters of 2-propylheptanoic acid and their use in cosmetic and/or pharmaceutical preparations. The compounds reportedly are characterized by a particularly lightweight sensation. The described preparations, according to the invention, are reportedly suitable to be incorporated in all cosmetic compositions for body care and body cleaning, such as body oil, baby oil, body milk, creams, lotions, sprayable emulsions, sunscreen compositions, antiperspirants, liquid and bar soaps, etc. They can also be used in surfactant-containing formulations such as foam and shower baths, hair shampoos and care rinses.

2-O-(β-D-glucopyranosyl) ascorbic acid or a salt or ester thereof for external use
US Patent 7781409
Publication date: Aug. 24, 2010
Assignee: Suntory Holdings Ltd.

Disclosed in this patent is a composition for external use comprising 2-O-(β-D-glucopyranosyl) ascorbic acid or a salt or ester thereof that is safe to the human body and a koji mold or a processed koji. The composition exhibits excellent skin permeability and contains a stable ascorbic acid derivative that is utilized persistently in the living body, possesses strong antioxidant activity, and has little skin irritation. Compositions employing the invention include: lotions, milky lotions, makeup, hair cosmetics, cleaning cosmetics, lip cosmetics, oral cavity cosmetics, nail cosmetics, eyeliner cosmetics, bath cosmetics and sunburn/sunscreen cosmetics. The composition is also used in medicaments or quasi-drugs, and examples of them include medicated cosmetics, and hair restorers in addition to eye drops for dry eyes.

Heterocyclic compound, UV absorbent and composition containing the same
US Patent Application 20100210762 
Publication date: Aug. 19, 2010
Assignee: Fujifilm Corp.

The disclosed patent describes cosmetic formulations containing a UV absorbent in addition to a primary light-protecting material and a secondary light-protecting material that are capable of prohibiting the photochemical chain reaction induced when UV rays penetrate skin or hair. Cosmetic compositions containing the UV absorbent may include skin washing and cleansing preparations in tablet or liquid soap form, synthetic detergents and pastes for cleaning as well as bathing preparations in the form of liquids (i.e., foam baths, milks, etc.) or solids such as bath cubes and bath salts, among others.

Cationic latex as a carrier for bioactive ingredients and methods for making and using the same
US Patent 7781498
Publication date: Aug. 24, 2010
Assignee: Mallard Creek Polymers Inc.

This invention relates to latex compositions that incorporate at least one bioactive component such as an antibacterial or antifungal agent, and methods for making and using such latex compositions. The latex compositions disclosed herein can be prepared by the emulsion polymerization of the latex component monomers in the presence of the at least one bioactive component. As provided herein, the latex composition can be applied to a wide variety of substrates such as: textiles, pretreatments for fibers, inorganic and/or organic materials such as coating or encapsulation of fillers or pigments, wound or surgical treatments or dressings, personal care or hygiene products such as shampoos, lotions, creams, hair and skin care products, body wash, cosmetics, toilet items and more.

Product comprising a combination of milk serum apoproteins and free fatty acids
US Patent Application 20100209526
Publication date: Aug. 19, 2010
Assignee: Westgate Biological Ltd.

The disclosed invention relates to use of a milk apoprotein or a mixture thereof to prevent or treat microbial or viral infection of the human or animal body. It is believed that this is achieved by inhibiting the adhesion of potential pathogens. Preferably, at least one milk apoprotein is administered, simultaneously or sequentially, with at least one free fatty acid or a monoglyceride thereof; and/or at least one organic acid or a salt or ester thereof or a mixture thereof. The active agent(s) may be delivered through a pharmaceutically acceptable delivery system including solutions, ointments, eye drops, nasal sprays, intravaginal devices, surgical dressings, medical foods or drinks, oral health care formulations and medicaments for mucosal applications. The delivery system may comprise oral hygiene products such as chewing gums, mouthwash, toothpaste and denture adhesives.

Compositions containing chalcones and uses thereof 
US Patent 7781410
Publication date: Aug. 24, 2010
Assignee: Johnson & Johnson

The described invention features a composition comprising a chalcone and describes the use thereof for treating acne and reducing the appearance of oil or pores on the skin, hair and scalp.

Shampoo compositions containing a combination of cationic polymers
US Patent 7781386
Publication date: August 24, 2010
Assignee: Conopco Inc.

The present invention provides an aqueous shampoo composition comprising: one or more anionic cleansing surfactants; preferably discrete, dispersed droplets of a water-insoluble conditioning agent with a mean droplet diameter of 4 micrometers or less; one or more cationic polymers selected from cationically modified acrylamide polymers having a cationic charge density at pH 7 of less than 1.0 meq/g, and cationically modified celluloses and mixtures thereof; and one or more cationic polymers selected from cationically modified acrylamide polymers having a cationic charge density at pH 7 of greater than 1.0 meq/g, cationically modified polygalactomannans, and mixtures thereof, wherein the composition comprises a cationic polymer other than a cationically modified acrylamide polymer.

Rheology modifier for aqueous surfactant-based formulations
US Patent Application 20100204081
Publication date: August 12, 2010
Assignee: Hercules Inc.

The present invention relates to aqueous formulations, useful in personal care, oral care, household and institutional applications, that contain polymers comprised of a water-soluble synthetic backbone with covalently connected hydrophobic ends that can deliver salt-like rheology to surfactant formulations containing surfactant concentrations where thickening by salt is not effective.

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