Patent ID: 6884331
Filing Date: 2005-04-26
Classification: B05D,C09D,G01N

Abstract:
1. A method for depositing an adhesive PVC copolymer layer on an electrode for ion selective measurement, the electrode comprising (a) a substrate, (b) a measuring element for measuring the activity of an ion in a solution, and (c) a membrane covering said measuring element and formed of a PVC-based material incorporating an ionophoretic agent selected as a function of the ion to be measured, characterized in that the method comprises the steps of: forming, in an organic solvent, a mixture of precursors of the copolymer incorporating PVC and 0.1% to 2% by weight of an organotrialkoxysilane corresponding to the formula where: depositing a layer of the mixture on said substrate, drying the mixture to evaporate the solvent, and heating the aggregate thus obtained to a temperature in a range from about 120° C. to about 170° C., for a time in a range from about 5 minutes to about 3 hours.