Curable fluorine-containing coating composition

Abstract

Disclosed is a curable fluorine-containing coating composition composed of a category 3 organic solvent (A), a fluorine-containing copolymer (B) with a hydroxyl group which is soluble in the organic solvent (A) and has a hydroxyl number of more than 5 mgKOH / g and a total of hydroxyl number and acid number of more than 30 mgKOH / g, and if necessary an acrylic resin (C) and a curing agent (D). This fluorine-containing coating composition exhibits sufficient curability even at room temperature, and enables to form a coating film which is excellent in solvent resistance, water resistance, weather resistance, hardness, gloss and the like, while being environmental friendly.

Description

technical field

[0001] The present invention relates to an environment-friendly curable fluorine-containing coating composition, which can provide a coating film excellent in solvent resistance, water resistance, weather resistance, coating film hardness, gloss and the like. Background technique

[0002] Fluorine-containing resins have excellent weather resistance, chemical resistance, water and oil repellency, and stain resistance due to the high energy and low polarizability of the C-F bond in the molecule, and various applications have been developed. However, due to such characteristics of fluorine-containing resins, the solvents that can be used are limited. These organic solvents include organic solvents that may have adverse effects on the natural environment and / or working environment, so attempts have been made to expand the range of solvents, and research has been carried out on room temperature-curable fluorine-containing resins that are soluble in general-purpose...