08.19.22
US Patent No. 11,413,234 B2 (Kayoko Naoi, Kouichi Nagai); Shiseido Company Ltd., Tokyo, has been awarded a US patent for a transparent composition. It is comprised of a UV absorbent; an oil component having a refractive index in the range from 1.5 to 1.7; an oil component having a refractive index of not less than 1.3 and less than 1.5; a powder having a refractive index in the range from 1.45 to 1.55; and an oil component thickener.
The mixed oil component obtained by mixing the oil component (with the refractive index in the range from 1.5 to 1.7) and the oil component (having a refractive index of not less than 1.3 and less than 1.5 )has a refractive index in the range from 1.44 to 1.56.
The first oil component ( refractive index of 1.5 to 1.7) is comprised of at least one selected from a group consisting of hydrogenated polyisobutene, trimethylpentaphenyl polysiloxane, diphenylsiloxy phenyl trimethicone, diphenyl dimethicone, phytosteryl macadamia nut fatty acid and phytosteryl isostearate.
The second oil component (refractive index of 1.3 to 1.5) is selected from a group consisting of diisopropyl sebacate, triethylhexanoine, hydrogenated polydecene, glyceryl tricaprylate-caprate, cetyl 2-ethylhexanoate, trimethylolpropane trioctanoate, α-olefin oligomer, glyceryl diisostearate, polyglyceryl triisostearate, isododecane, isohexadecane, light isoparaffin and polyoxyethylene-polyalkylsiloxane,
The powder component contains at least one selected from a group consisting of dimethyl silylated silica, polymethyl methacrylate, HDI/trimethylol hexyl lactone cross polymer, IPDI/poly (1,4-butane diol)-14 cross polymer and cellulose.
The oil component thickener is comprised of at least one selected from a first group consisting of dibutyl lauroyl glutamide, dibutyl ethyl hexanoyl glutamide, polyamide-8, and (behenic acid/eicosane diacid) glyceryl, and optionally further comprises at least one selected from a second group consisting of 12-hydroxy stearic acid and palmitate dextrin.
The mixed oil component obtained by mixing the oil component (with the refractive index in the range from 1.5 to 1.7) and the oil component (having a refractive index of not less than 1.3 and less than 1.5 )has a refractive index in the range from 1.44 to 1.56.
The first oil component ( refractive index of 1.5 to 1.7) is comprised of at least one selected from a group consisting of hydrogenated polyisobutene, trimethylpentaphenyl polysiloxane, diphenylsiloxy phenyl trimethicone, diphenyl dimethicone, phytosteryl macadamia nut fatty acid and phytosteryl isostearate.
The second oil component (refractive index of 1.3 to 1.5) is selected from a group consisting of diisopropyl sebacate, triethylhexanoine, hydrogenated polydecene, glyceryl tricaprylate-caprate, cetyl 2-ethylhexanoate, trimethylolpropane trioctanoate, α-olefin oligomer, glyceryl diisostearate, polyglyceryl triisostearate, isododecane, isohexadecane, light isoparaffin and polyoxyethylene-polyalkylsiloxane,
The powder component contains at least one selected from a group consisting of dimethyl silylated silica, polymethyl methacrylate, HDI/trimethylol hexyl lactone cross polymer, IPDI/poly (1,4-butane diol)-14 cross polymer and cellulose.
The oil component thickener is comprised of at least one selected from a first group consisting of dibutyl lauroyl glutamide, dibutyl ethyl hexanoyl glutamide, polyamide-8, and (behenic acid/eicosane diacid) glyceryl, and optionally further comprises at least one selected from a second group consisting of 12-hydroxy stearic acid and palmitate dextrin.