Patent ID: 11910724
Assignee: ISP INVESTMENTS LLC
Field: Pharmaceuticals (Chemistry)
Classification: CPC H  A  G | IPC A  G  H

Claim 0:
1. A substantially anhydrous thickener system in the form of a gel for use in oral care compositions comprising:
(i) carboxymethyl cellulose, or a salt thereof, present in an amount from about 0.1% to about 2.0% of the thickener system;
(ii) a chelating agent consisting of disodium pyrophosphate, present in an amount from about 0.01% to about 2.0% of the thickener system; and
(iii) hydroxyethyl cellulose, present in an amount from about 0.1% to about 1.0% of the thickener system;
(iv) a solvent or solvent system; and
(v) water in an amount from about 0.1% to about 10% by weight of the solvent system,
wherein the solvent system is first combined with the carboxymethyl cellulose or salt thereof, the hydroxyethyl cellulose, and the water heated to an elevated temperature ranging from about 70° C. to about 120° C. before the chelating agent is added at the elevated temperature to form a gel.