	US 11,890,362 B2
	Oral care composition
Saide Tang, Princeton, NJ (US); Lin Fei, Kendall Park, NJ (US); Suman Chopra, Monroe, NJ (US); Hallena Strotman, Somerset, NJ (US); and Pooja Kulkarni, Plainsboro, NJ (US)
Assigned to Colgate-Palmolive Company, New York, NY (US)
Filed by Colgate-Palmolive Company, New York, NY (US)
Filed on Apr. 17, 2020, as Appl. No. 16/851,291.
Claims priority of provisional application 62/843,710, filed on May 6, 2019.
Prior Publication US 2020/0352834 A1, Nov. 12, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/25 (2006.01); A61K 8/04 (2006.01); A61Q 11/00 (2006.01)

CPC A61K 8/25 (2013.01) [A61K 8/042 (2013.01); A61Q 11/00 (2013.01); A61K 2800/651 (2013.01)]

17 Claims

1. An oral care composition comprising:

a first metal silicate comprising sodium silicate;

an orally acceptable carrier;

a core shell silica particle comprising:

a second metal silicate; and

a silica particle comprising a core having a surface,

wherein the surface of the silica core is etched with the second metal silicate, and the second metal silicate comprises a silicate of a monovalent, or multivalent metal ion, wherein the first metal silicate is not bound to the silica, and

wherein the total amount of the first metal silicate and the second metal silicate is from about 0.5 to about 1.5 wt. %, and the oral care composition has a pH of 7.8 to 8.7.