Invention Grant
- Patent Title: Preparation of zinc citrate and of zinc citrate-containing oral care compositions
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Application No.: US15521058Application Date: 2014-10-24
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Publication No.: US11234913B2Publication Date: 2022-02-01
- Inventor: Stanislav Jaracz
- Applicant: Colgate-Palmolive Company
- Applicant Address: US NY New York
- Assignee: Colgate-Palmolive Company
- Current Assignee: Colgate-Palmolive Company
- Current Assignee Address: US NY New York
- International Application: PCT/US2014/062086 WO 20141024
- International Announcement: WO2016/064412 WO 20160428
- Main IPC: A61K8/27
- IPC: A61K8/27 ; A61Q11/00 ; A61K8/365

Abstract:
A method of preparing a zinc citrate-containing oral care composition, the method comprising: (a) adding zinc oxide to a solution of citric acid in a solvent to form a suspension; (b) agitating the suspension until a clear solution is obtained; and (c) adding an additional oral care ingredient to the solution obtained in (b). Also, a method of preparing a zinc citrate-containing oral care composition, the method comprising: (a) adding citric acid to a suspension of zinc oxide in a solvent; (b) agitating the suspension until a clear solution is obtained; and (c) adding an additional oral care ingredient to the solution obtained in (b). In both methods, steps (a) and (b) are carried out at a temperature of from 10° C. to 50° C. and the molar ratio of zinc oxide to citric acid in step (a) is about 3:2.
Public/Granted literature
- US20170354578A1 Preparation of Zinc Citrate and of Zinc Citrate-Containing Oral Care Compositions Public/Granted day:2017-12-14
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