The present invention concerns 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; •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; provided that the composition comprises (in the first part and/or in the second part) at least one compound C comprising a radical -EWG.sub.1-CH.sub.2-EWG.sub.2- wherein EWG.sub.2 and EWG.sub.1 are independently of each other an electron withdrawing group.

An easily water-disintegrable adhesive composition contains a 2-cyanoacrylate compound and a water-soluble compound, and wherein a cured product of the adhesive composition has a water absorption rate of 5% or higher when immersed in 40° C. water for 24 hours. The cured product of the adhesive composition preferably has a water absorption rate of 5% or higher when immersed in 23° C. water for 24 hours.

An easily water-disintegrable adhesive composition contains a 2-cyanoacrylate compound and a water-soluble compound, and wherein a cured product of the adhesive composition has a water absorption rate of 5% or higher when immersed in 40° C. water for 24 hours. The cured product of the adhesive composition preferably has a water absorption rate of 5% or higher when immersed in 23° C. water for 24 hours.

The present invention relates to a curable composition comprising a curable cyanoacrylate component and at least one thermoplastic polyurethane (TPU) component. The compositions of the invention are non-flowable at room temperature (25° C.) and are suitable for use as adhesive compositions, for example in a tape form.

The present invention relates to a curable composition comprising a curable cyanoacrylate component and at least one thermoplastic polyurethane (TPU) component. The compositions of the invention are non-flowable at room temperature (25° C.) and are suitable for use as adhesive compositions, for example in a tape form.

Composite materials are formed by photo curing compositions containing one or more cyanoacrylates, substantial amounts of one or more fillers (in particular, opaque and/or fibrous fillers such as carbon fibers) as well as particular photoinitiator systems. The photoinitiator system may comprise, for example, a metallocene compound such as a ferrocene in combination with an acylgermane or other photocleavable compound which generates an acyl radical when exposed to light. Complete, deep curing of such compositions to provide composite materials having improved mechanical properties can be achieved, even though the light used to initiate curing may not be capable of penetrating the entire thickness of the composition due to the presence of the filler.

Composite materials are formed by photo curing compositions containing one or more cyanoacrylates, substantial amounts of one or more fillers (in particular, opaque and/or fibrous fillers such as carbon fibers) as well as particular photoinitiator systems. The photoinitiator system may comprise, for example, a metallocene compound such as a ferrocene in combination with an acylgermane or other photocleavable compound which generates an acyl radical when exposed to light. Complete, deep curing of such compositions to provide composite materials having improved mechanical properties can be achieved, even though the light used to initiate curing may not be capable of penetrating the entire thickness of the composition due to the presence of the filler.

This invention relates to cyanoacrylate-containing compositions that include (a) a beta-alkoxy cyanoacrylate component, (b) a cyanoacrylate component selected from butyl cyanoacrylates, octyl cyanoacrylates, and combinations thereof; (c) a rubber toughening component (d) a surface modified component; and (e) an adhesion promoter. Cured products of the inventive cyanoacrylate compositions demonstrate improved toughness without an odor typically found with cyanoacrylate-containing compositions.

This invention relates to cyanoacrylate-containing compositions that include (a) a beta-alkoxy cyanoacrylate component, (b) a cyanoacrylate component selected from butyl cyanoacrylates, octyl cyanoacrylates, and combinations thereof; (c) a rubber toughening component (d) a surface modified component; and (e) an adhesion promoter. Cured products of the inventive cyanoacrylate compositions demonstrate improved toughness without an odor typically found with cyanoacrylate-containing compositions.

This invention relates to cyanoacrylate-containing compositions that include (a) a beta-alkoxy cyanoacrylate component, (b) a cyanoacrylate component selected from butyl cyanoacrylates, octyl cyanoacrylates, and combinations thereof; (c) a rubber toughening component (d) a surface modified component; and (e) an adhesion promoter. Cured products of the inventive cyanoacrylate compositions demonstrate improved toughness without an odor typically found with cyanoacrylate-containing compositions.