Cross-linkable melamine coating compositions
Assignee3M Innovative Properties Company
InventorBert J. Exsted
Life of this patent
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Abstract
Curable coating compositions containing melamine precursors comprising: (a) a compound of the formula wherein R is each, independently, H, CH2OH or CH2OR2, and R1 and R2 are each, independently, alkyl having 1 to 4 carbon atoms; (b) an alcohol, preferably a polyhydric alcohol; and (c) either (i) a perfluoroalkyl alcohol of the formula in which Rf is CnF2n+1 or where x is 1-12; n is 3-20, and R3 is H, alkyl of 1-4 carbon atoms or —CH2)x—OH, or (ii) a polyvalent salt. These compositions can be cured thermally with a catalyst and provide unique advantages as coatings for porous materials.
Claims10
A curable coating composition comprising:
- (a) a compound of the formula;
- wherein R is each, independently, H, CH2OH or CH2OR2, and R1 and R2 are each independently alkyl having 1 to 4 carbon atoms;
- (b) a polyhydric alcohol;
- and
- (c) a perfluoroalkyl alcohol of the formula
- in which Rf is CnF2n+1 or
- where x is 1-12;
- n is 3-20, and R3 is H, alkyl of 1-4 carbon atoms or —(CH2)x—OH, wherein said composition is capable of cross-linking.
A curable coating composition comprising:
- (a) a compound of the formula;
- wherein R is each independently H, CH2OH or CH2OR2, and R1 and R2 are each independently alkyl having 1 to 4 carbon atoms;
- (b) a polyhydric alcohol;
- and
- (c) a polyvalent salt.
Dependencies are inferred from the claim text.