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Patent Review

January 8, 2009

Jeen Issued Silicone Copolymer Patent


 
Jeen International has been awarded a U.S. patent covering its Jeesilc PS Series of silicone copolymers. The granted patent and corresponding foreign applications (which the company is pursuing in Europe, Asia and the Americas) cover the use of this unique technology in a wide range of cosmetic, personal care and dermatologic products.
   
Jeesilc PS Series technology is based on the novel Bis vinyl dimethicone/ dimethicone copolymer, a non-crosslinked, non-alkyl containing linear silicone polymer designed to enhance the texture, spread properties, gloss and film integrity of personal care/cosmetic formulations. Consisting of a full line of silicone gels and liquids, the Jeesilc PS Series features a wide range of viscosities and carriers to bring these aesthetic benefits to formulators worldwide. Additionally, extensive patent coverage allows freedom to formulate outside many of the complexities found within the silicone cross-linked chemistries. Extensions to the Jeesilc PS Series are already under development to provide further benefits to using this novel technology, according to Jeen.

Rinse-Off Cleanser Patented by Unilever



U.S. Patent No. 7,446,081 B2: A U.S. patent has been awarded to Unilever Home & Personal Care USA for a rinse-off cleanser composition for delivering enhanced opacity (defined by ΔL value) while minimizing matting effect (lower shine). The composition consists of, by weight, 0.5-90% surfactant system comprising C10-C24 fatty acids, alkyl taurates, and oxyalkylene ethers; 0.1-35% solid particulate optical modifier with said modifier selected from the group consisting of talc, mica having particle size below about 50 micrometers and mixtures thereof; 0.01%-30% titanium dioxide particle having size of approximately 100-300nm; 2-25% of a deposition enhancement system that is comprised of 0.1-10% polyquaternium 6 cationic polymer or polymers having charge density of about 6.2 meq/g, 0.1 to 30% anionic surfactant and optionally 0.1-30% by wt. of a granular anionic polymer which is a natural alkaloid polymer that forms a precipitate with said cationic polymer or polymers upon dilution. The anionic forming the precipitate is selected from the group consisting of C10 to C24 fatty acid soaps, alkyl taurates, and mixtures thereof; and 0.1-45% of a hydrophilic structural dispersant comprising polyalkylene glycol, maltitol and glycerin. The combination of titanium dioxide with the specified particle size of and the optical modifier together with deposition enhancement system of provides at least 5% enhancement in ΔL while simultaneously enhancing shine effect.


Multi-Phase Detergents



U.S. Patent No. 7,446,084 B2: Henkel has been awarded a U.S. patent covering a process for manufacturing multi-phase detergents or cleaning agents. It entails manufacturing a water-soluble or water-dispersible container; filling the container with a first detergent or cleaning agent to form a first phase; applying a liquid separation agent onto this first phase and hardening the separation agent to form a separation layer; and filling the container with a second detergent or cleaning agent to form a second phase.

Perfumes for Rinse-Off Applications



U.S. Patent No. 7,446,079 B2:  Givaudan Fragrances Corp. has patented perfumes for rinse-off systems. The method is comprised of calculating values of odor detection threshold, odor detection threshold in air, acceleration (Γ) flash water release (Ω) values for a group of odorants; selecting at least three different odorants, each odorant having an acceleration (Γ) value of about 1000 or greater, a flash release (Ω) value selected from the group consisting of approximately 10 or greater, from approximately 0.07-10, and from about 0.007-0.07, and a property selected from the group consisting of an odor detection threshold of about 50 parts per billion or less, an odor detection threshold in air of about 0.025 mg/m3 or less, and combinations of these; and placing the perfume composition in a wash-off system to provide an initial water release and a minimal residual perfume on a targeted surface after wash-off.

Replenishable Soap Bar



U.S. Patent No. 7,459,418 B1: Alden Ozment of Longview, TX has patented a method for recharging a soap bar comprising a structural core over one or more surfaces of which is deposited a solid layer of soap.  The method entails the following steps: contacting the soap bar with a stripping fluid at a temperature above a softening point of said soap and at sufficient pressure to cause any existing soap layer to be stripped from any surfaces of said structural core; placing said structural core in a pool of soap composition in a liquid phase and covering at least one surface of said structural core with said soap composition; and cooling said soap composition to form the solid layer of said soap over at least one surface of the structural core.

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