10.14.22
US Patent No. 11,458,079 B2 (Hiroki Hamada, Ryuta Yuasa, Yui Matsuhashi, Daisuke Uesugi); Jo Cosmetics Co. Ltd. Tokyo, and Meisterbio Co. Ltd. Okayama have been awarded a US patent for an emulsified cosmetic composition for use in sunscreen. It is comprised of the following components:
A: Trans-resveratrol polysaccharide, wherein the trans-resveratrol polysaccharide comprises a compound represented by this formula:
wherein n is an integer of 1 to 9,
wherein all (1-4) glycosidic linkages in the formula are α-linkages, and
wherein an O-glycosidic linkage at position 3 of resveratrol in the formula is a β-linkage; and
B: A UV protection agent, wherein the UV protection agent is a UV scattering agent, wherein the UV scattering agent is selected from the group consisting of fine particle titanium oxide, fine particle zinc oxide, and combinations thereof; wherein the UV scattering agent has a hydrophobized surface and wherein the UV scattering agent has a number average particle size of from 10 nm to 35mn.
A: Trans-resveratrol polysaccharide, wherein the trans-resveratrol polysaccharide comprises a compound represented by this formula:
wherein n is an integer of 1 to 9,
wherein all (1-4) glycosidic linkages in the formula are α-linkages, and
wherein an O-glycosidic linkage at position 3 of resveratrol in the formula is a β-linkage; and
B: A UV protection agent, wherein the UV protection agent is a UV scattering agent, wherein the UV scattering agent is selected from the group consisting of fine particle titanium oxide, fine particle zinc oxide, and combinations thereof; wherein the UV scattering agent has a hydrophobized surface and wherein the UV scattering agent has a number average particle size of from 10 nm to 35mn.