	US 11,806,411 B2
	Oral care compositions
Pooja Kulkarni, Plainsboro, NJ (US); Lin Fei, Kendall Park, NJ (US); Suman Chopra, Monroe, NJ (US); Hallena Strotman, Somerset, NJ (US); and Saide Tang, Princeton, NJ (US)
Assigned to Colgate-Palmolive Company, New York, NY (US)
Filed by Colgate-Palmolive Company, New York, NY (US)
Filed on Mar. 24, 2020, as Appl. No. 16/828,326.
Claims priority of provisional application 62/843,722, filed on May 6, 2019.
Prior Publication US 2020/0352832 A1, Nov. 12, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 8/02 (2006.01); A61K 8/19 (2006.01); A61K 8/25 (2006.01); A61K 8/27 (2006.01); A61Q 11/00 (2006.01); C03C 15/00 (2006.01); C03C 17/22 (2006.01); C09C 1/30 (2006.01); C09C 3/06 (2006.01)

CPC A61K 8/0245 (2013.01) [A61K 8/0216 (2013.01); A61K 8/19 (2013.01); A61K 8/25 (2013.01); A61K 8/27 (2013.01); A61Q 11/00 (2013.01); A61K 2800/28 (2013.01); A61K 2800/413 (2013.01); A61K 2800/621 (2013.01); A61K 2800/651 (2013.01); A61K 2800/92 (2013.01); C03C 15/00 (2013.01); C03C 17/22 (2013.01); C09C 1/3054 (2013.01); C09C 3/063 (2013.01)]

14 Claims

1. An oral care composition comprising:

potassium silicate; and

an orally acceptable carrier;

a core shell silica particle comprising:

a metal silicate consisting of a multivalent metal silicate comprising zinc silicate and, optionally, a monovalent metal silicate having a metal ion, wherein the metal ion of the monovalent metal silicate is not potassium, and

a silica particle comprising a core and having a surface,

wherein the surface of the silica core is etched with the multivalent metal silicate and optionally the monovalent metal silicate,

wherein the potassium silicate is present in an amount of from about 1 wt. % to about 4 wt. %; and wherein the oral care composition has a pH from 8 to 10.