Raw Material and Vehicle Patents

By: Bud Brewster, Cosmetics & Toiletries

Posted: December 4, 2008

7,416,869
Lonza Ltd.
Enzyme delivery systems, application in water based products
Disclosed are aqueous enzyme delivery systems as well as aqueous cosmetics and personal care products which comprise at least one stabile enzyme and a polyglycerol containing at least 15 carbons. Also disclosed are stabile non-aqueous enzyme delivery systems that are dispersions of at least one enzyme in a non-aqueous viscous liquid. Methods are provided for the treatment of human skin in recreational water applications by means of enzymes.

7,416,783
Kao Corp.
Resin particles comprising a (meth)acrylate copolymer and a surfactant having a sulfonic-acid or sulfonate group
The invention relates to cross-linked (meth)acrylate-based resin particles having an average particle diameter of 1 to 10 μm. Among the particles’ monomer components are a monomer having a carboxyl group and at least one monomer selected from an acrylate and a methacrylate copolymerized therein. The particles have a surface coated with a surfactant having a sulfonic acid group or a sulfonate group. A process is described for producing these particles, which confer not only extendability and smoothness but also dry feeling on cosmetics, and in themselves have smoothness and dry feeling.

7,416,735
The Procter & Gamble Company
Emulsion compositions
The present invention relates to particle stabilizing compositions suitable for use in pharmaceuticals, oral care products, antiperspirants, deodorants, personal cleansing products, skin care products and hair care products, among others. The emulsion comprises 1–99% by weight internal phase and 1–99% by weight external phase. A charged species is present in the emulsion. Charged insoluble solid particles are dispersed in the emulsion wherein the charged species possesses a charge that is opposed to that of the charged insoluble solid particles and wherein essentially all of the charged species and charged insoluble solid particles accumulate at the interface of the emulsion. Brownian motion is not exhibited by the charged insoluble solid particles.

7,413,580
L'Oreal S.A.
Double para-phenylenediamines joined by a linker arm substituted with one or more carboxylic radicals and/or derivatives and use in dyeing
These novel para-phenylenediamines are useful as oxidation bases for the dyeing of keratin fibers.

7,411,007
MJ O’Brien and A Chaiyawat
Cosmetic compositions using polyether siloxane copolymer network compositions
In a preferred embodiment the reaction product of this invention is a polyether siloxane copolymer network. In another preferred embodiment embodiment the reaction product of the present invention is a polyether siloxane copolymer network swollen with a volatile low molecular weight silicon-containing compound. These compositions are useful for a variety of personal care compositions, especially ones designed to deliver multiple performance products based on mixtures of several components, with each having performance characteristics important to or desirable in the final formulation.