US 12,466,981 B2 · Curable two-part adhesive composition

Abstract

The present invention refers to a curable two-part adhesive composition comprising a first part comprising one or more cyanoacrylate monomer(s), one or more (metha)acrylate monomer(s), a per-compound and, optionally, additives to control viscosity and rheology; and a second part comprising: a non-reactive diluent and a transition metal catalyst, and optionally an electron rich initiator for cyanoacrylates. It also relates to a syringe or a cartridge comprising said two-part curable composition, to the use of such composition for bonding substrates, to the use of such composition filling depressions, cracks or holes in a substrate or between substrates to a method for bonding substrates using said composition, and to a repair method for filling depressions, cracks or holes in a substrate or between substrates using said composition.

Claims15

Dependent claims

A two-part curable composition, characterized in that it comprises:

a) a first part (part A) comprising:
i. at least 50 wt. % of one or more cyanoacrylate monomer(s),
ii. at least 1 wt. % of one or more (meth)acrylic monomer(s), and
iii. at least 1 wt. % of a per-compound,
wherein the wt. % is based on the total weight of the first part of the composition,
b) a second part (part B) comprising:
i. at least 50 wt. % of a non-reactive diluent, and
ii. from 0.001 wt. % to 2 wt. % of a transition metal catalyst, expressed as the content of the transition metal,
wherein the wt. % is based on the total weight of the second part of the composition, wherein the volume ratio between the first part and the second part ranges from 4:1 to 10:1, with the proviso that the second part does not comprise any vinylic monomer(s).

6 more elements

Dependencies are inferred from the claim text.

Curable two-part adhesive composition

Life of this patent

Curable two-part adhesive composition

Life of this patent

Abstract

Claims15