Crosslinkable, fluorine-containing copolymers, and surface...

Details Crosslinkable, fluorine-containing copolymers, and surface... Crosslinkable, fluorine-containing copolymers, and surface...

C - Chemistry, Metallurgy

08

F

C08F 218/04 (2006.01) C08F 8/12 (2006.01) C08F 214/08 (2006.01) C08F 214/18 (2006.01) C08F 218/10 (2006.01)

Patent

CA 2057590

HOE 90/F 918 Abstract of the disclosure Crosslinkable, fluorine-containing copolymers, and surface coatings based on these copolymers A crosslinkable, fluorine-containing copolymer is described which comprises a) from 10 to 60 mol-% of copolymerized units of a vinyl ester of a highly branched carboxylic acid whose acyl radical has 9 carbon atoms and comprises isomers containing two quaternary carbon atoms to which from 0 to 80 mol-% of isomers containing one quaternary carbon atom together with at least one tertiary carbon atom in the acyl radical are ad- mixed, b) from 20 to 50 mol-% of copolymerized units of a vinyl ester of a short-chain carboxylic acid, where from 50 to 100% of the copolymerized units of this vinyl ester b) are in the OH form obtained by hydrolysis, and c) copolymerized units of a perfluoroolefin of the formula CF2=CFRf in which Rf is F or a perfluoroalkyl radical having 1 to 8 carbon atoms, in an amount which makes the sum of components a) + b) + c) up to 100 mol=%, but with the proviso that at least 10 mol=% of the perfluoroolefin are present in the copolymer. The copolymers are suitable as binders for surface coating compositions of all types, in particular for industrial finishes.

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