	US 11,939,493 B2
	Two-part curable composition
Ciaran McArdle, Barcelona (ES); Arnau Pejoan Jimenez, Barcelona (ES); Patxi Garra, Barcelona (ES); Vladimir Tchaplinski, Barcelona (ES); Marta Rodriguez Ble, Barcelona (ES); Jordi Solera Sendra, Barcelona (ES); and Maria Campanyá I Llovet, Barcelona (ES)
Assigned to BOSTIK SA, Colombes (FR)
Appl. No. 17/439,443
Filed by BOSTIK SA, Colombes (FR)
PCT Filed Mar. 18, 2020, PCT No. PCT/EP2020/057385 § 371(c)(1), (2) Date Sep. 15, 2021, PCT Pub. No. WO2020/187964, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 19305335 (EP), filed on Mar. 19, 2019.
Prior Publication US 2022/0177747 A1, Jun. 9, 2022
Int. Cl. C09J 135/04 (2006.01); C08F 220/28 (2006.01); C08F 222/32 (2006.01); C08K 13/02 (2006.01); C09J 4/00 (2006.01)

CPC C09J 135/04 (2013.01) [C08F 220/281 (2020.02); C08F 222/327 (2020.02); C08K 13/02 (2013.01); C09J 4/00 (2013.01)]

19 Claims

1. A two-part curable composition comprising:

a first part (component A) comprising:

at least 51% by weight, based on the total weight of the first part, of one or more cyanoacrylate monomer(s);

a transition metal complex; and

an antioxidant; and

a second part (component B) comprising:

a per-compound;

at least one Michael acceptor M selected from the group consisting of (meth)acrylic monomers, (meth)acrylic functionalized oligomers, (meth)acrylic functionalized resins, and mixtures thereof;

optionally an acid scavenger AS compound selected from the group consisting of the sterically hindered bases;

wherein:

the composition comprises (in the first part and/or in the second part) at least one compound C comprising a radical -EWG₁-CH₂-EWG₂- wherein EWG₂and EWG₁are each, independently of each other, an electron withdrawing group; and

the first part of the composition does not comprise a per-compound.