	US 12,280,130 B2
	Functionalized calcium carbonate for sun protection boosting
Tanja Budde, Brittnau (CH); and Anaïs Hecker, Lyss (CH)
Assigned to Omya International AG, Oftringen (CH)
Appl. No. 16/483,909
Filed by Omya International AG, Oftringen (CH)
PCT Filed Feb. 2, 2018, PCT No. PCT/EP2018/052616 § 371(c)(1), (2) Date Aug. 6, 2019, PCT Pub. No. WO2018/146006, PCT Pub. Date Aug. 16, 2018.
Claims priority of provisional application 62/459,667, filed on Feb. 16, 2017.
Claims priority of application No. 171554256 (EP), filed on Feb. 9, 2017.
Prior Publication US 2019/0380927 A1, Dec. 19, 2019
Int. Cl. A61K 8/19 (2006.01); A61K 8/02 (2006.01); A61K 8/27 (2006.01); A61K 8/29 (2006.01); A61Q 17/04 (2006.01)

CPC A61K 8/19 (2013.01) [A61K 8/0279 (2013.01); A61K 8/27 (2013.01); A61K 8/29 (2013.01); A61Q 17/04 (2013.01); A61K 2800/412 (2013.01)]

12 Claims

1. A cosmetic composition comprising:

at least one inorganic UV filter; and

surface-reacted calcium carbonate having a volume median particle size d₅₀from 0.1 to 90 μm and an intra-particle intruded specific pore volume from 0.2 to 2.0 cm^3/g, calculated from mercury porosimetry measurement;

wherein

hydroxyapatite is formed on the surface of natural ground calcium carbonate and at least partially covers the surface of the natural ground calcium carbonate, and

is a reaction product of natural ground calcium carbonate with carbon dioxide and phosphoric acid,

the cosmetic composition provides UV-A and/or UV-B protection, and

the surface-reacted calcium carbonate particles are preformed prior to combination with the UV filter particles.