The present teachings contemplate a method comprising coating a poly(vinyl chloride) material with a composition including a dicarbonyl compound, a cyanoacrylate compound, or a combination thereof and a viscosity modifying agent so that the composition has a viscosity of from about 50 cps to about 2500 cps; wherein the coated poly(vinyl chloride) material is capable of adhering to a second material without the use of a primer.

The present teachings contemplate a method comprising coating a poly(vinyl chloride) material with a composition including a dicarbonyl compound, a cyanoacrylate compound, or a combination thereof and a viscosity modifying agent so that the composition has a viscosity of from about 50 cps to about 2500 cps; wherein the coated poly(vinyl chloride) material is capable of adhering to a second material without the use of a primer.

A curable composition containing: a methylene malonate compound; a 2-cyanoacrylate compound; and a Lewis acidic compound. The methylene malonate compound is preferably a compound represented by formula (1) or formula (2). In the formulae (1) and (2), X.sup.1 to X.sup.4 each independently represent O, NR, or C(R).sub.2, R's each independently represent a hydrogen atom, an alkyl group, or an aryl group, R.sup.1 and R.sup.2 each independently represent an alkyl group or an aryl group, and R.sup.3 represents an alkylene group, an arylene group, or a group obtained by combining two or more of these groups.

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An adhesive composition of general use is described, and particularly suitable for welding plastic parts, in the form of a two-component composition. The first of the two components being a cyanoacrylate based glue, and the second of the two components includes a blend, in powder form, of a polymeric origin component and an organic origin component.

An adhesive composition of general use is described, and particularly suitable for welding plastic parts, in the form of a two-component composition. The first of the two components being a cyanoacrylate based glue, and the second of the two components includes a blend, in powder form, of a polymeric origin component and an organic origin component.

The present application provides methods and compositions for patching a polymer or a non-polymer substrate surface by producing a bond between a polymer patch surface and the substrate surface. The application also provides kits having instructions for patching a polymer or a non-polymer substrate surface by producing a bond between a polymer patch surface and the substrate surface.

The present application provides methods and compositions for patching a polymer or a non-polymer substrate surface by producing a bond between a polymer patch surface and the substrate surface. The application also provides kits having instructions for patching a polymer or a non-polymer substrate surface by producing a bond between a polymer patch surface and the substrate surface.

The present application provides compositions and methods for allowing surfaces such as HDPE, LDPE, polyethylene, polypropylene, Teflon (polytetrafluoroethylene), SBS, SEBS, SIS elastomers, and silicone rubber, which are notoriously difficult to apply adhesives, glues, or coatings to, to he treated with a Primer System that increases the ability of a glue, adhesive, or coating to adhere to that surface and subsequently allows other materials to be used as coatings on the surface or to be applied using a glue or adhesive.

The two-part curable composition has excellent curability, and exhibits flexibility and adhesion durability. The two-part curable composition includes a first reagent containing at least a 2-cyanoacrylic acid ester and a second reagent containing at least a polymer having a hydrolyzable silyl group, in which an elastomer and a curing catalyst for the above polymer are each contained in at least one of the first and second reagents in predetermined amounts. A preferable curing catalyst is a compound having a metal element and an organic group bonded to the metal element via oxygen, or an acid having a pKa of 4 or lower at 25° C. Preferably, a curing accelerator for 2-cyanoacrylic acid ester is contained in at least one of the first and second reagents.

The present invention relates to a composition comprising cyanoacrylate monomers and at least one block copolymer and which can be polymerized.