Dispersions of inorganic particulates containing alkoxycrylene
AssigneeHallstar Innovations Corp.
InventorsCraig A. Bonda, Anna Pavlovic, Jean Zhang
Life of this patent
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Abstract
A composition comprising an inorganic particulate material in an amount of about 20 wt % to about 70 wt %, a carrier for the particulate material comprising a compound of formula (I) in an amount of about 1 wt % to about 70 wt %, a particulate material coating material in an amount of about 0 wt % to about 5 wt %, and a dispersing agent for the particulate material in an amount of about 0 wt % to about 5 wt %, based on the total weight of the composition, wherein one of R1 and R2 is a straight or branched chain C1-C30 alkoxy radical, and the non-alkoxy R1 or R2 is hydrogen; and R3 is a straight or branched chain C1-C30 alkyl radical.
Claims32
A photostabilized sunscreen or dermatological composition for protecting skin from UV radiation comprising an inorganic particulate material in an amount of about 1 wt % to about 70 wt %, a compound of formula (I) in an amount of about 1 wt % to about 70 wt %, a particulate material coating material in an amount of about 0 wt % to about 10 wt %, and a dispersing agent for the particulate material in an amount of about 0 wt % to about 10 wt %, based on the total weight of the composition,
- wherein one of R1 and R2 is a straight or branched chain C1-C30 alkoxy radical, and the non-alkoxy R1 or R2 is hydrogen;
- and R3 is a straight or branched chain C1-C30 alkyl radical.
A method of protecting skin from UV radiation comprising applying a photostabilized sunscreen or dermatological composition to the skin comprising an inorganic particulate material in an amount of about 1 wt % to about 70 wt %, a compound of formula (I) in an amount of about 1 wt % to about 70 wt %, a particulate material coating material in an amount of about 0 wt % to about 10 wt %, and a dispersing agent for the particulate material in an amount of about 0 wt % to about 10 wt %, based on the total weight of the composition,
- wherein one of R1 and R2 is a straight or branched chain C1-C30 alkoxy radical, and the non-alkoxy R1 or R2 is hydrogen;
- and R3 is a straight or branched chain C1-C30 alkyl radical.
Dependencies are inferred from the claim text.