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US 8,283,040 B2Granted
Radiation-curable formulations comprising silica and dispersant and featuring enhanced corrosion control on metal substrates
AssigneeEvonik Degussa GmbH
InventorsEmmanouil Spyrou, Holger Loesch, Pedro Cavaleiro
Life of this patent
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Abstract
The invention relates to silica-containing radiation-curable formulations which in the cured state offer a particular degree of corrosion control for metallic substrates.
Claims26
A radiation-curable formulation comprising
- A) at least one ethylenically unsaturated radiation-curable resin,
- B) at least 5% by weight of silica, based on the total formulation,
- C) at least one adhesion promoter,
- D) at least one ethylenically unsaturated radiation-curable reactive diluent, and
- E) at least one dispersant selected from the group consisting of lecithin, a fatty acid, an alkylphenol ethoxylate of a fatty acid, and a salt of a fatty acid, present in an amount of from 0.5% to 5% by weight based on the total weight of the formulation,
- wherein said at least one radiation-curable resin is a polyesterurethane acrylate.
3 more elements
A radiation-curable formulation comprising
- A) at least one ethylenically unsaturated radiation-curable resin,
- B) at least 5% by weight of silica, based on the total formulation,
- C) at least one adhesion promoter,
- D) at least one ethylenically unsaturated radiation-curable reactive diluent, and
- E) at least one dispersant selected from the group consisting of lecithin, a fatty acid, an alkylphenol ethoxylate of a fatty acid, and a salt of a fatty acid, present in an amount of from 0.5% to 5% by weight based on the total weight of the formulation,
- wherein said silica is a precipitated silica having a pore volume of from 2.5 to 15 ml/g and a specific surface area of from 30 to 800 m2/g.
3 more elements
A radiation-curable formulation comprising
- A) at least one ethylenically unsaturated radiation-curable resin,
- B) at least 5% by weight of silica, based on the total formulation,
- C) at least one adhesion promoter,
- D) at least one ethylenically unsaturated radiation-curable reactive diluent, and
- E) a lecithin dispersant in an amount of from 0.5% to 5% by weight based on the total weight of the formulation.
2 more elements
A radiation-curable formulation comprising
- A) at least one ethylenically unsaturated radiation-curable resin,
- B) at least 5% by weight of silica, based on the total formulation,
- C) at least one adhesion promoter,
- D) at least one ethylenically unsaturated radiation-curable reactive diluent, and
- E) at least one dispersant selected from the group consisting of a fatty acid, an alkylphenol ethoxylate of a fatty acid, and a salt of a fatty acid, present in an amount of from 0.5% to 5% by weight based on the total weight of the formulation.
2 more elements
Dependencies are inferred from the claim text.