The present invention is to provide a coating composition for surface coating capable of forming a cured coating film layer that protects a reflective substrate of a solar heat-collecting reflective plate and that is excellent in the impact resistance and the weather resistance such as the heat resistance and the water resistance, as well as a solar heat-collecting reflective plate having such a cured coating film layer, and a process for its production. A coating composition for surface coating to be used for the production of a solar heat-collecting reflective plate having a reflective substrate made of metal, which comprises a fluoropolymer (A) having units (A1) derived from a fluoroolefin and units (A2) having a crosslinkable group. Further, a solar heat-collecting reflective plate having a cured coating film layer formed from the coating composition for surface coating, and a process for its production.
本发明旨在提供一种能够形成固化涂膜层的表面涂层用涂料组合物,该固化涂膜层能够保护太阳能集热反射板的反射基板,并且具有优异的抗冲击性和耐候性(例如耐热性和耐
水性),以及具有该固化涂膜层的太阳能集热反射板及其生产工艺。一种表面涂层用涂料组合物,用于生产具有
金属制反射基板的太阳能集热反射板,该组合物由
氟聚合物(A)组成,
氟聚合物(A)具有从
氟烯烃衍生的单元(A1)和具有可交联基团的单元(A2)。此外,还包括一种太阳能集热反射板,该板具有由该涂层组合物形成的固化涂膜层,用于表面涂层,还包括其生产工艺。