Abstract: The present invention relates to a coating film forming composition, in which a coating film formed by the coating film forming composition has a water contact angle, after a surface was washed with water, of 25° or less, and a water content, after impregnation with water at 25° C. for 2 hours, of 110% or less.

Abstract: The present invention relates to a peelable coating film having silica particles fixed to a surface thereof, a coating material for hydrophilic-coating-film formation which includes colloidal silica, an alkali metal silicate, and an aqueous medium, and a coating-material set including the coating material for hydrophilic-coating-film formation and a coating material for peelable-coating-film formation including an aqueous dispersion type resin composition.

Abstract: An object of the present invention is to provide a coating film that can be peeled in a sheet form, facilitates removal work and is less likely to be peeled even if used for a long period of time, and an undercoat layer-forming composition for forming an undercoat layer of the coating film. The present invention relates to an undercoat layer-forming composition for forming an undercoat layer of a coating film including the undercoat layer and an antifouling layer adhered to the undercoat layer, wherein the undercoat layer-forming composition comprises a base polymer and a silicone polymer, and a polar group-containing substituent is bonded to at least a part of the silicone polymer.

Abstract: An object of the present invention is to provide a coating film that can be peeled in a sheet form, facilitates removal work and is less likely to be peeled even if used in an underwater structure for a long period of time, and an undercoat layer-forming composition for forming an undercoat layer of the coating film. The present invention relates to an undercoat layer-forming composition for forming an undercoat layer of a coating film including the undercoat layer and an antifouling layer which contains a silicone oil and is adhered to the undercoat layer, wherein the undercoat layer-forming composition contains a base polymer and a tackifying resin.

Abstract: An object of the present invention is to provide a coating film forming composition that can form a coating film stably exhibiting an inhibiting effect on the adhesion of aquatic organisms even in the presence of physical factors, for example, water flow in the water. The present invention relates to a coating film forming composition for forming a coating film, the coating film forming composition containing a silicone resin and a silicone oil, wherein a coating film formed of the coating film forming composition satisfies the following (1) and (2). (1) A water contact angle of the coating film after the elapse of 5 minutes after dropping water on the coating film is 80° or less. (2) A water contact angle of the coating film after the elapse of 5 minutes after bringing the coating film into contact with methanol for 3 hours, followed by dropping water on the coating film is 80° or less.