COATING COMPOSITION FOR COATING THE SURFACE OF REFLECTIVE PLATE FOR SOLAR HEAT COLLECTOR AND METHOD FOR PRODUCING REFLECTIVE PLATE FOR SOLAR HEAT COLLECTOR

摘要

To provide a coating composition for coating the surface of a solar heat-collecting reflective plate, capable of forming on the surface of a reflective substrate a coating film which has excellent weather resistance and impact resistance, and which is excellent in the adhesion and is thereby hardly peeled, and a process for producing a solar heat-collecting reflective plate using the coating composition. A coating composition which comprises a fluorinated polymer (A) having a hydroxy value of from 110 to 250 mgKOH/g resin, a polyester polymer (B) having a hydroxy value of from 100 to 300 mgKOH/g resin, a polyisocyanate type curing agent (C) and a solvent (D). Further, a process for producing a solar heat-collecting reflective plate, which comprises applying the coating composition to a surface of a reflective substrate to form a coating layer, and removing the solvent (D) to form a coating film.