Fluorine-containing coating composition

A fluorine-containing coating composition comprising:

• 100 parts by weight of a fluorine-containing copolymer having a hydroxyl value of 80-200 mg KOH per 1 g thereof, said fluorine-containing copolymer being prepared by copolymerizing 40-65 mol % of a fluoroolefin, 14-50 mol % of a copolymerizable vinyl-containing compound, 12-25 mol % of a polymerizable hydroxyl-containing compound containing a hydroxyl group, and 0.1-12 mol % of at least one other copolymerizable compound selected from the group consisting of carboxyl-containing compounds each containing a carboxyl group and vinyl alkoxysilanes each containing an alkoxyl group, said copolymerizable vinyl-containing compound being free from any one of said hydroxyl group, said carboxyl group and said alkoxyl group;
• 0.1-20 parts by weight of an alkyl silicate;
• and
• 1-25 parts by weight of a polyoxytetramethylene glycol having a number average molecular weight of 16-4,000.

A fluorine-containing coating composition comprising:

• 100 parts by weight of a fluorine-containing copolymer having a hydroxyl value of 80-200 mg KOH per lg thereof, said fluorine-containing copolymer being prepared by copolymerizing 40-65 mol % of a fluoroolefin, 14-50 mol % of a copolymerizable vinyl-containing compound, 12-25 mol % of a polymerizable hydroxyl-containing compound containing a hydroxyl group, and 0.1-12 mol % of at least one other copolymerizable compound selected from the group consisting of carboxyl-containing compounds each containing a carboxyl group and vinyl alkoxysilanes each containing an alkoxyl group, said copolymerizable vinyl-containing compound being free from any one of said hydroxyl group, said carboxyl group and said alkoxyl group;
• 0.1-20 parts by weight of an alkyl silicate;
• 0.05-3 parts by weight of a water-soluble polyether-modified silicone oil having in the molecule at least one dimethylsiloxane structural unit and at least one ethylene oxide structural unit;
• and
• 1-25 parts by weight of a polyoxytetramethylene glycol having a number average molecular weight of 16-4,000.