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Preparation of Zinc Citrate and of Zinc Citrate-Containing Oral Care Compositions
专利权人:
Colgate-Palmolive Company
发明人:
Stanislav Jaracz
申请号:
US15521058
公开号:
US20170354578A1
申请日:
2014.10.24
申请国别(地区):
US
年份:
2017
代理人:
摘要:
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.
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来源网址:
http://www.ckcest.cn/home/
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