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Title:
METHODS FOR EVALUATING THE STAIN REMOVAL EFFICACY OF DENTIFRICES
Document Type and Number:
WIPO Patent Application WO/2016/074214
Kind Code:
A1
Abstract:
Disclosed herein are methods for evaluating the whitening effect of oral care composition on a stained egg comprising staining an eggshell, applying the oral care composition to a portion of the stained eggshell to obtain a treated eggshell area, calculating a ΔE value for the difference in color of the treated eggshell area compared to untreated stained eggshell when calculated in L*a*b color space, wherein the oral care composition comprises at least one high cleaning silica for stain removal. Further disclosed herein are methods for demonstrating the whitening effect of an oral care composition on a stained egg comprising showing an egg that has been stained to at least one consumer and brushing an oral care composition comprising at least one high cleaning silica for stain removal on a portion of the stained eggshell to obtain a treated eggshell area.

Inventors:
GAO YAN (CN)
WEN ZHAOYU (CN)
LIN GUANGXIN (CN)
XU YUN (CN)
ZHONG ZHIPING (CN)
Application Number:
PCT/CN2014/091095
Publication Date:
May 19, 2016
Filing Date:
November 14, 2014
Export Citation:
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Assignee:
COLGATE PALMOLIVE CO (US)
GAO YAN (CN)
International Classes:
G01N33/15; A61K8/25; A61Q11/00; G01N33/40
Foreign References:
CN102655842A2012-09-05
Other References:
LI XIA.: "Fluoride Toothpaste to Prevent Dental Caries Function Simulation in Vitro--a Recommend for Oral Medical Students Chemistry Experiment Design", GUANGDONG CHEMICAL INDUSTRY, vol. 41, no. 12, 30 June 2014 (2014-06-30), pages Pages 33 and 39, XP008184595
See also references of EP 3218708A4
Attorney, Agent or Firm:
CHINA PATENT AGENT (HK) LTD. (Great Eagle Center23 Harbour Road, Wanchai, Hong Kong, CN)
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