FIELD: instrumentation.
SUBSTANCE: invention refers to a sensor changing its colour in the presence of a water-base fluid. In particular, the present invention relates to an absorbing product fitted by a moisture sensor with a leuco dye rich in electrons and an electron-deficient receiver which shows a person taking care or a user that the product is ready to be replaced. A sensor to detect the presence of water-base fluid where the sensor comprises a substrate having at least one type of the moisture detecting material which is set or printed upon the layer of the said substrate. The detecting material includes at least one electron-donating leuco dye and one electron-deficient receiver; the detecting material of the sensor is coloured when dry and the colour fades or vanishes when contacting with water-containing fluid, also, the detecting material comprises an agent facilitating wettability or a hydrophilic water-soluble agent.
EFFECT: absorbing product comprising such a sensor to indicate a customer that the product is filled by water-containing fluids is proposed.
33 cl, 11 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| VARIABLE COLOUR COMPOSITION | 2011 |
|
RU2585806C2 |
| CHANGING COLOR MOISTURING INDICATOR | 2012 |
|
RU2617526C2 |
| ABSORBENT PRODUCT PROVIDED WITH LEAKAGE SENSORS | 2009 |
|
RU2498790C2 |
| NON-TACKY WETNESS INDICATOR COMPOSITION FOR APPLICATION ON POLYMERIC SUBSTRATE | 2012 |
|
RU2613781C2 |
| HUMIDITY SENSOR FOR APPLICATION IN ABSORBING PRODUCT | 2011 |
|
RU2624435C2 |
| MOISTURE SENSOR | 2008 |
|
RU2497130C2 |
| DISCOLORING COMPOSITION AND MATERIAL | 2013 |
|
RU2604678C2 |
| COATING COMPOSITION SENSITIVE TO WATER MEDIUM FOR RELEASE OF ACTIVE INGREDIENTS AND VISUAL INDICATION OF MOISTURE CONTENT | 2012 |
|
RU2614530C2 |
| MULTICOMPONENT MATERIALS CONTAINING COLOUR-CHANGING COMPOSITION | 2010 |
|
RU2567693C2 |
| IR SYSTEM DETERMINING MOISTURE OF ABSORBING ITEM | 2010 |
|
RU2553008C2 |
