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US 10,702,458 B2Granted
Compositions comprising micropigments
AssigneeDsm IP Assets B.V.
InventorsCyrille Deshayes, Andre Duesterloh, Anne Janssen, Thomas Rudolph
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Abstract
The present invention relates to topical compositions comprising at least one inorganic micropigment and a cetyl phosphate surfactant mixture consisting essentially of mono- and/or dicetyl esters of phosphoric acid or salts thereof and cetylalcohol and inorganic phosphate and heavy metals and water, characterized in that the surfactant mixture contains no organochlorine impurities and has an inorganic phosphate content of less than 0.7 wt.-% and a heavy metal content of less than 12 ppm.
Claims16
A topical composition comprising:
- at least one inorganic micropigment, and
- a cetyl phosphate surfactant mixture consisting essentially of, based on total weight of the surfactant mixture:
- (i) 60-95 wt. % of monocetyl phosphoric acid or a salt thereof,
- (ii) 0-15 wt. % of dicetyl phosphoric acid or a salt thereof,
- (iii) 0-20 wt. % of cetyl alcohol,
- (iv) 0-0.7 wt. % of an inorganic phosphate,
- (v) 0-12 ppm of heavy metals, and
- (vi) 0-4 wt. % of residual water, wherein the surfactant mixture contains no organochlorine impurities.
5 more elements
Dependencies are inferred from the claim text.