Abstract: A coating liquid composition comprises a resin component, a first solvent having a solubility parameter lower than 23.5 (MPa)0.5, carbon dioxide, and a second solvent having a solubility parameter of 23.5 (MPa)0.5 to 40 (MPa)0.5. An average boiling point bpi of the first solvent and an average boiling point bp2 of the second solvent satisfy a relationship of bp1?bp2>0.

Abstract: A coating liquid composition comprises a resin component, a first solvent having a solubility parameter lower than 23.5 (MPa)0.5, carbon dioxide, and a second solvent having a solubility parameter of 23.5 (MPa)0.5 to 40 (MPa)0.5. An average boiling point bpi of the first solvent and an average boiling point bp2 of the second solvent satisfy a relationship of bp1?bp2>0.

Abstract: The present invention provides a low environmental burden type coating method using carbon dioxide and a coating device therefor that carry out carbon dioxide coating in which carbon dioxide is substituted for all or a portion of a diluent solvent (thinner) used in organic solvent-based spray coating, the coating method being configured to prevent deposition of a polymer of a paint component that has entered as a result of backflow by preliminarily adding, to carbon dioxide, a true solvent component of the paint in at least an amount required for saturated solubility (20% to 50% per weight of carbon dioxide) to lower the dissolving power of carbon dioxide with respect to the true solvent component. According to the present invention, it is possible to provide a coating method and a device therefor capable of considerably reducing VOC generation, and a coating method and a device therefor capable of performing stable carbon dioxide coating of a one-liquid curing type or two-liquid curing type paint.

Abstract: The present invention provides a low environmental burden type coating method using carbon dioxide and a coating device therefor that carry out carbon dioxide coating in which carbon dioxide is substituted for all or a portion of a diluent solvent (thinner) used in organic solvent-based spray coating, the coating method being configured to prevent deposition of a polymer of a paint component that has entered as a result of backflow by preliminarily adding, to carbon dioxide, a true solvent component of the paint in at least an amount required for saturated solubility (20% to 50% per weight of carbon dioxide) to lower the dissolving power of carbon dioxide with respect to the true solvent component. According to the present invention, it is possible to provide a coating method and a device therefor capable of considerably reducing VOC generation, and a coating method and a device therefor capable of performing stable carbon dioxide coating of a one-liquid curing type or two-liquid curing type paint.