	US 12,312,506 B2
	Polymers for metal surface treatment
Guillaume Gody, Rueil-Malmaison (FR); Isabelle Storet, Serezin de la Tour (FR); Laurent Garel, Lyons (FR); and Marie-Pierre Labeau, Se'vres (FR)
Assigned to SPECIALTY OPERATIONS FRANCE, Lyon (FI)
Appl. No. 17/999,522
Filed by SPECIALTY OPERATIONS FRANCE, Lyons (FR)
PCT Filed May 10, 2021, PCT No. PCT/EP2021/062297 § 371(c)(1), (2) Date Nov. 21, 2022, PCT Pub. No. WO2021/233715, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 20305515 (EP), filed on May 19, 2020.
Prior Publication US 2023/0203345 A1, Jun. 29, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09J 5/04 (2006.01); C08F 2/10 (2006.01); C08F 212/14 (2006.01); C08F 220/06 (2006.01); C09J 5/02 (2006.01)

CPC C09J 5/04 (2013.01) [C08F 2/10 (2013.01); C08F 212/24 (2020.02); C08F 220/06 (2013.01); C09J 5/02 (2013.01); C09J 2301/50 (2020.08); C09J 2400/166 (2013.01)]

12 Claims

1. A method of treating a first metallic surface (S1) intended to be bonded to a second surface (S2) by adhesive bonding, and for imparting a resistance to the adhesive failure to the bonding, comprising treating a first metallic surface (S1) with at least one polymer (P) obtained by radical copolymerization of a mixture of:

acrylic acid;

methacrylic acid; and

at least one methylated or not methylated allylcatechol which is selected from 4-allylbenzene-1,2-diol; 3-allylbezene-1,2-diol; corresponding eugenols; and mixtures thereof,

wherein the second surface (S2) is a metallic surface.