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A METHOD OF DEMONSTRATING STAIN-PROOF EFFICACY OF AN ORAL CARE COMPOSITION
专利权人:
发明人:
申请号:
EP16186307.1
公开号:
EP3127583A1
申请日:
2013.06.24
申请国别(地区):
EP
年份:
2017
代理人:
摘要:
The present invention provides a method of demonstrating stain-proof efficacy of an oral care composition, comprising the steps:(a) sticking hydroxyapatite powder uniformly onto a substrate(b) immersing the substrate sticked with hydroxyapatite powder into a slurry or solution of the oral care composition(c) drying the immersed substrate and(d) contacting the dried substrate with a slurry or solution of stain to observe stains behavior.
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中国工程科技知识中心
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