System for evaluating the pH and buffering capacity of moisture containing cleansing articles
US7850911B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2010 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Apr 16, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/207497
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A system comprising a moisture containing cleansing article and a visual pH indicator changing color at a pH above 4.0. The system can comprise a buffer, having preferably a pKa above 5.5. The system can comprise a set of instructions for evaluating moisture containing cleansing articles. The pH buffer of the system can have a pKa value equal to or greater than the pH of the color change of the visual pH indicator. The pH of color change of the visual pH indicator can be equal to or greater than the pH of the lotion. The system can be used to evaluate the pH of moisture containing cleansing article lotions and to quantify the ability to neutralize alkalinity such as the alkalinity provided by residues of feces and urine over time on the skin of a baby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.