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US 12,760,422 B2Granted
Metal surface treatment
AssigneeSpecialty Operations France
InventorsGuillaume Gody, Marie-Pierre Labeau, Cindy Granier, Justine Layec
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Abstract
The instant invention concerns the use of at least one polymer P obtained by radical copolymerization of a mixture of (i) acrylic acid; (ii) methacrylic acid; and (iii) at least one monomer of formula: for treating a metallic surface intended to be coated by a paint, a varnish or an adhesive, for example intended to be adhesive-bonded to another surface, in order to impart a resistance to the adhesive failure to the resulting bonding.
Claims13
A method for treating a metal surface intended to be coated by a paint, a varnish or an adhesive, the method comprising:
- applying onto the metal surface at least one polymer P obtained by radical copolymerization of a mixture of (i) acrylic acid;
- and (ii) methacrylic acid;
- and (iii) at least one monomer M having the Formula (I) below:
- wherein:
- R1 is H or a methyl group —CH3;
- and
- A is a linkage selected from the group consisting of:
- a single covalent bond;
- and
- a spacer group,
- wherein the polymer P is obtained by radical copolymerization of a mixture having the following molar ratio, based on the total quantity of acrylic acid, methacrylic acid and monomer M of formula (I):
- acrylic acid:
- from 5 to 50%,
- methacrylic acid:
- from 30 to 90%,
- monomer M:
- from 1 to 50%.
14 more elements
Dependencies are inferred from the claim text.