Water-soluble coating material and an environmentally friendly method of preparation

The present invention provides an environmentally friendly method for preparing a water-soluble coating material and a low content of volatile organic compounds in the material, green. The preparation method is simple, low cost, suitable for industrial production. The water soluble coating material, comprising the following raw materials: synthetic resins 40-50%, 5-8% acrylic emulsion, an aqueous polyurethane 5-10%, 6-10% silica powder, 10-14% polysulfone composite oxide , polyethylene glycol 2-6% dispersing agent, 0.1-0.5% barium sulfate, the balance water. 15-25 microns silica powder. Polysulfone composite oxide of an average particle size of 15-25 microns. The weight ratio of polysulfone composite oxide and polysulfone composite oxide precursor 1-3: 10.