10.01.18
US Patent No. 10,028,900 B2; Kancor Ingredients, Mumbai, has patented a photostable sunscreen composition. The composition contains dibenzoylmethane derivative; octylmethoxy cinnamate; and dermatologically-acceptable excipients; in combination with -(4-methoxy-5-benzofuranyl)-3-phenyl 1,3 propanedione (pongamol).
The dermatologically acceptable excipients are 79-97% by weight of the composition and contain 60-75% aqueous phase comprising: polydecene; dimethicone; propylene glycol; isopropyl myristate; emulsifying wax NF (blend of cetearyl alcohol and polysorbate 6.0); glyceryl stearate and PEG (polyethylene glycol)-100 stearate; cetyl alcohol; triethanolamine; stearic acid; phenoxyethanol; fragrance; vitis vinifera (grapeseed) oil; citrullus lanatus (watermelon) fruit extract and citrullene; carbomer; butylated hydroxytoluene; glutathione; alpha arbutin and water. The composition is stabilized with the 1-(4-methoxy-5-benzofuranyl)-3-phenyl 1,3 propanedione (pongamol) having 90-98% purity in 0.9 to 6% by weight of the composition.
The dermatologically acceptable excipients are 79-97% by weight of the composition and contain 60-75% aqueous phase comprising: polydecene; dimethicone; propylene glycol; isopropyl myristate; emulsifying wax NF (blend of cetearyl alcohol and polysorbate 6.0); glyceryl stearate and PEG (polyethylene glycol)-100 stearate; cetyl alcohol; triethanolamine; stearic acid; phenoxyethanol; fragrance; vitis vinifera (grapeseed) oil; citrullus lanatus (watermelon) fruit extract and citrullene; carbomer; butylated hydroxytoluene; glutathione; alpha arbutin and water. The composition is stabilized with the 1-(4-methoxy-5-benzofuranyl)-3-phenyl 1,3 propanedione (pongamol) having 90-98% purity in 0.9 to 6% by weight of the composition.