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US 10,292,923 B2Granted
Alkoxy-silanes compounds and related condensation products as cosmetic raw materials and for coating cosmetic powders
AssigneeIntercos S.p.A.
InventorsPatrizia Valsesia, Gaetano Distefano, Claudio Pirovano, Pietro Rando, Gabriele Depta, Sara Bettinelli
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Abstract
There are described alkoxy-silanes compounds and related condensation products as cosmetic raw materials and for coating cosmetic powders; synthesis processes of such compounds and condensation products and production of coated cosmetic powders. Said cosmetic powders can be used for preparing cosmetic products such as anhydrous products for face/eyes/lips, cosmetic pencils and face/eyes emulsions.
Claims15
A skin-friendly coating compound for the surface modification of cosmetic powders using sol-gel chemistry of general formula:
- A-B—C (1)
- where:
- A is a hydrocarbon radical having from 10 to 100 carbon atoms and formally derived from an AX precursor with X=—OH or —NH2, with melting or softening point higher than 25° C. and lower than 100° C.,
- B is a ureic or urethane group of formula:
- C is a propyl trialkoxyl silane group —(CH2)3Si(OR1)x(OR2)3-x where 0≥x≥3 of formula (3)
- where R1 corresponds to an ethyl radical —CH2CH3 and R2 to the methyl radical —CH3.
3 more elements
Dependencies are inferred from the claim text.