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US 2009/0214447 A1Published application
Preparation of cationic nanoparticles and personal care compositions comprising said nanoparticles
AssigneeBASF SE
InventorsJohn Jennings, Dietmar Haglin, Jianwen Mao, Andreas Muhlebach
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Abstract
The present invention is directed to cationic nanoparticles, methods to make them, and the use of compositions containing said nanoparticles in personal care compositions or formulations. The nanoparticles are useful in personal care applications and impart antimicrobial properties to home and personal care products containing them. These cationic nanoparticles also contribute useful conditioning properties to hair-care and skin-care products.
Claims30
A personal care composition comprising
- (a) an effective amount of at least one cationic nanoparticle of formula (I)
- wherein
- said cationic nanoparticle core comprises an inorganic or organic material and where
- A is an organic substituent covalently bound to the core nanoparticle surface and containing at least one cationic group L;
- B is an organic substituent covalently bound to the core nanoparticle surface and containing at least one cationic moiety G;
- C is an organic substituent covalently bound to the core nanoparticle surface containing at least one functional group Z;
- a is a number from 1 to na;
- b is a number from 0 to nb;
- c is a number from 0 to nc;
- where the sum of na+nb+nc is a number from 1 up to nl, where nl is limited by the geometry and surface area of the core nanoparticle and the steric requirements of the respective substituents A, B, C;
- and
- (b) a cosmetically acceptable adjuvant.
9 more elements
Dependencies are inferred from the claim text.