A STAIN-PROOF ORAL CARE COMPOSITION

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专利权人:

发明人:

申请号：

EP13883847.9

公开号：

EP3013309A1

申请日:

2013.06.24

申请国别(地区):

EP

年份:

2016

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.

来源网站：

中国工程科技知识中心

来源网址：

http://www.ckcest.cn/home/