Non-sticky water-based conformal coating material

Abstract

The present invention provides a non-sticky water-based coating material, which can be formed into a film at room temperature without using a coalescence, does not contain a solvent and forms a membrane having flexibility, low Young's modulus, favorable adhesive properties, moisture resistance and insulating properties. Specifically, the present invention relates to a non-sticky water-based conformal coating material comprising a resin wherein a flexible acrylic resin having glass transition temperature of at most 0° C. is the main chain and a vinyl polymer having a glass transition temperature of at least 20° C. is grafted to the flexible acrylic resin; the content of the vinyl polymer being 10 to 70% by weight based on the flexible acrylic resin.

1 . A non-sticky water-based conformal coating material comprising a resin wherein a flexible acrylic resin having glass transition temperature of at most 0° C. is the main chain and a vinyl polymer having a glass transition temperature of at least 20° C. is grafted to said flexible acrylic resin; 
 the content of said vinyl polymer being 10 to 70% by weight based on said flexible acrylic resin.