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US 7,247,671 B2Granted
Aqueous crosslinkable coating compositions based on vinyl fluoropolymer
AssigneeDsm IP Assets B.V.
InventorsGerardus Cornelis Overbeek, Jurgen Scheerder, Tijs Nabuurs
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Abstract
Aqueous crosslinkable coating composition suitable for anti-graffiti and heavy duty applications comprising: (A) an aqueous polymer emulsion comprising at least one vinyl fluoropolymer which comprises as a polymerized constituent monomer thereof (i) a fluoromonomer(s) having the formula (1) wherein R1 is CH3 or H, R2 is a per-fluorinated C1-5 alkyl group and n is 1, 2, 3 or 4, (ii) a hydroxyl functional monomer(s) and (iii) a carboxylic acid-functional monomer(s) where the vinyl fluoropolymer has a glass transition temperature Tg within the range of from −50 to 90° C. and (B) at least one hydroxyl-reactive crosslinker material
Claims25
Aqueous crosslinkable coating composition suitable for anti-graffiti and heavy duty applications comprising:
- (A) an aqueous polymer emulsion comprising at least one vinyl fluoropolymer in which:
- (i) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer thereof a fluoromonomer(s) having the formula:
- wherein R1 is CH3 or H, R2 is a perfluorinated C1-5 alkyl group and n is 1, 2, 3 or 4, and wherein said fluoromonomer(s) forms from 5 to 60 weight % of the total monomers used to prepare said at least one vinyl fluoropolymer;
- (ii) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer thereof 2 to 58 weight % of a polymerised non-fluoro, non-acid hydroxyl functional monomer(s) in an amount to provide or contribute to a hydroxyl value, which said at least one vinyl fluoropolymer possesses, of at least 8 mg KOH/g of solid polymer;
- (iii) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer(s) thereof from 0.2 to 10 weight % of a non-fluoro, non-hydroxy carboxylic acid-functional monomer(s) in an amount to provide or contribute to an acid value, which said at least one vinyl fluoropolymer possesses, of within the range of from 2 to 80 mg KOH/g of solid polymer;
- (iv) wherein said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer(s) 0 to 92 weight % of a non-fluoro, non-acid, non-hydroxyl monomer(s);
- and
- (v) said at least one vinyl fluoropolymer has a glass transition temperature Tg within the range of from −50 to 90° C.;
- and
- (B) at least one hydroxyl-reactive crosslinker material;
- wherein said at least one hydroxyl-reactive crosslinker material of component (B) is present in an amount such the ratio of hydroxyl groups from the polymer(s) of component (A) to the hydroxyl-reactive groups of the crosslinker material of component (B) is within the range of from 0.1 to 10, said coating composition providing coatings with anti-graffiti ratings of 30 to 35 against graffiti from seven differently colored markers.
8 more elements
Aqueous crosslinkable coating composition suitable for anti-graffiti and heavy duty applications comprising:
- (A) an aqueous polymer emulsion comprising at least one vinyl fluoropolymer in which:
- (i) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer thereof a fluoromonomer(s) having the formula:
- wherein R1 is CH3 or H, R2 is a perfluorinated C1-5 alkyl group and n is 1, 2, 3 or 4, and wherein said fluoromonomer(s) forms from 5 to 60 weight % of the total monomers used to prepare said at least one vinyl fluoropolymer;
- (ii) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer thereof a polymerised hydroxyl functional monomer(s) in an amount to provide or contribute to a hydroxyl value, which said at least one vinyl fluoropolymer possesses, of at least 8 mg KOH/g of solid polymer;
- (iii) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer(s) thereof a carboxylic acid-functional monomer(s) in an amount to provide or contribute to an acid value, which said at least one vinyl fluoropolymer possesses, of within the range of from 2 to 80 mg KOH/g of solid polymer;
- (iv) said at least one vinyl fluoropolymer has a glass transition temperature Tg within the range of from −50 to 90° C.;
- and
- (B) at least one hydroxyl-reactive crosslinker material;
- wherein said at least one hydroxyl-reactive crosslinker material of component (B) is present in an amount such the ratio of hydroxyl groups from the polymer(s) of component (A) to the hydroxyl-reactive groups of the crosslinker material of component (B) is within the range of from 0.1 to 10 wherein said aqueous polymer emulsion of component (A) further comprises a non-fluoro polymer(s) and wherein said fluoro polymer(s) has an average particle size which is smaller than that of the non-fluoropolymer(s) by at least 10 nm.
6 more elements
Aqueous crosslinkable coating composition suitable for anti-graffiti and heavy duty applications comprising:
- (A) an aqueous polymer emulsion comprising at least one vinyl fluoropolymer in which:
- (i) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer thereof a fluoromonomer(s) having the formula:
- wherein R1 is CH3 or H, R2 is a perfluorinated C1-5 alkyl group and n is 1, 2, 3 or 4, and wherein said fluoromonomer(s) forms from 5 to 60 weight % of the total monomers used to prepare said at least one vinyl fluoropolymer;
- (ii) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer thereof 2 to 58 weight % of a polymerised non-fluoro, non-acid hydroxyl functional monomer(s) in an amount to provide or contribute to a hydroxyl value, which said at least one vinyl fluoropolymer possesses, of at least 8 mg KOH/g of solid polymer;
- (iii) said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer(s) thereof from 0.2 to 10 weight % of a non-fluoro, non-hydroxy carboxylic acid-functional monomer(s) in an amount to provide or contribute to an acid value, which said at least one vinyl fluoropolymer possesses, of within the range of from 2 to 80 mg KOH/g of solid polymer;
- (iv) wherein said at least one vinyl fluoropolymer comprises as a polymerised constituent monomer(s) 0 to 92 weight % of a non-fluoro, non-acid, non-hydroxyl monomer(s);
- and
- (v) said at least one vinyl fluoropolymer has a glass transition temperature Tg within the range of from −50 to 90° C.;
- and
- (B) at least one hydroxyl-reactive crosslinker material;
- wherein said aqueous polymer emulsion (A) also includes a non-fluoropolymer(s) comprising:
- 32 to 100 weight % of a non-fluoro, non-acid, non-hydroxyl monomer
- 0 to 58 weight % of a non-fluoro, non-acid, hydroxyl functional monomer and
- 0 to 10 weight % of a non-fluoro, non-hydroxyl, carboxylic acid functional monomer.
11 more elements
Dependencies are inferred from the claim text.