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US 6,376,592 B1Granted
Water dispersion type water and oil repellent composition
AssigneeAsahi Glass Company, Limited
InventorsToyomichi Shimada, Takashige Maekawa
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Abstract
A water dispersion type water and oil repellent composition obtained by polymerizing the following polymerizable monomer mixture (b) in the presence of a compound (a) having a blocked isocyanate group and no polymerizable unsaturated group: (b) a mixture comprising a polymerizable monomer having a polyfluoroalkyl group and a polymerizable monomer having no polyfluoroalkyl group.
Claims20
A water and oil repellent composition, obtained by polymerizing a polymerizable monomer mixture (b) in the presence of a compound (a) having a blocked isocyanate group and no polymerizable unsaturated group;
- wherein said composition is contained in a dispersion in water;
- wherein said monomer mixture (b) comprises:
- an unsaturated polymerizable monomer having a polyfluoroalkyl group Rf and an unsaturated polymerizable monomer having no polyfluoroalkyl group;
- wherein said unsaturated polymerizable monomer having a polyfluoroalkyl group Rf is represented by formula (1)
- Rf—R1—X (1);
- wherein
- Rf=CnH2n+1, wherein at least two hydrogen atoms are substituted by fluorine and
- wherein
- n=4-20;
- R1=a single bond or a bivalent group;
- and
- X=unsaturated polymerizable group.
9 more elements
Dependencies are inferred from the claim text.