Coating compositions of an acrylic fluorocarbon polymer and a fluorinated polyisocyanate

A substrate coated with a dried and cured layer of a coating composition containing about 45-80% by weight of a binder and 20-55% by weight of an organic liquid;

• wherein the binder comprises
• (A) about 40-90% by weight, based on the weight of the binder, of an acrylic polymer consisting essentially of about 20-45% by weight, based on the weight of the acrylic polymer, of polymerized hydroxyl containing monomers selected from the group consisting of hydroxy alkyl acrylate and hydroxy alkyl methacrylates having 1-4 carbon atoms in the alkyl groups, 50-79.9% by weight, based on the weight of the acrylic polymer, of polymerized monomers selected from the group consisting of alkyl acrylates and alkyl methacrylates having 1-18 carbon atoms in the alkyl groups, styrene and any mixtures of the above and 0.1-5.0% by weight, based on the weight of the acrylic polymer, of polymerized fluoroalkyl containing monomer represented by the formula ##STR9## where R is selected from the group consisting of hydrogen or an alkyl group having 1-2 carbon atoms, n is an integer of 1-11 and R.sub.f is a fluoroalkyl containing group having at least 4 carbon atoms and the acrylic polymer having a weight average molecular weight of about 2,000-20,000 determined by gel permeation chromatography, and
• (B) about 10-60% by weight, based on the weight of the binder, of a fluorinated organic polyisocyanate crosslinking agent consisting essentially of an adduct of a fluorinated monofunctional alcohol and an organic polyisocyanate where the fluorinated monofunctional alcohol is represented by the formula ##STR10## where R.sub.f is as defined above, X is a divalent radical, R.sup.3 is H or an alkyl group having 1-4 carbon atoms, n is 1 and m is 1-30 and where about 0.1-33 mole percent of active isocyanate groups are reacted with the fluorinated monofunctional alcohol.