A composition comprises a cyanoacrylate polymer and a protected amine. A method comprises: providing a shaped model comprising a cyanoacrylate polymer; preparing an investment having a cavity that corresponds to the shaped model; and heating the shaped model to sufficient temperature that the cyanoacrylate polymer depolymerizes and volatilizes. A hardenable material may be cast in the investment to provide a replica of the shaped model. A curable composition comprises: a cyanoacrylate monomer; a free-radical photoinitiator; and a protected amine, wherein the curable composition is free of compounds that initiate anionic polymerization of the cyanoacrylate monomer at ambient temperature. A method of curing the curable composition is also disclosed.

A composition comprises a cyanoacrylate polymer and a protected amine. A method comprises: providing a shaped model comprising a cyanoacrylate polymer; preparing an investment having a cavity that corresponds to the shaped model; and heating the shaped model to sufficient temperature that the cyanoacrylate polymer depolymerizes and volatilizes. A hardenable material may be cast in the investment to provide a replica of the shaped model. A curable composition comprises: a cyanoacrylate monomer; a free-radical photoinitiator; and a protected amine, wherein the curable composition is free of compounds that initiate anionic polymerization of the cyanoacrylate monomer at ambient temperature. A method of curing the curable composition is also disclosed.

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

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

The present invention relates to a fast and elastic adhesive. Said adhesive includes two components, one including a monomer having an alkoxyalkyl ester group, a thickener, a thixotropic agent and a stabilizing agent. In the other component, a plasticizing agent, a thixotropic agent, and an initiating agent are included. This adhesive can be used to practically instantaneously bond substrates that can move relative to one another, or which may be bent or have the ability to absorb an impact, or to seal.

The present invention provides a curable composition having an excellent permeability to a porous substrate and a sufficient strength for use as a coating film, and also having a suitable curing time (set time), accordingly the curable composition having a pot life from the application until the completion of the permeation to pore portions. Particularly, the present invention also provides a favorable coating agent for surface reinforcement coating of a porous substrate. These objects can be achieved by using a curable composition containing the following (A) and (B): (A) a cyanoacrylate compound; and (B) a hydrofluoroether having such a structure that the number of carbon atoms substituted only with fluorine in the molecule is 1 or more to 6 or less, and the number of carbon atoms in the molecule is less than 7.

The present invention provides a curable composition having an excellent permeability to a porous substrate and a sufficient strength for use as a coating film, and also having a suitable curing time (set time), accordingly the curable composition having a pot life from the application until the completion of the permeation to pore portions. Particularly, the present invention also provides a favorable coating agent for surface reinforcement coating of a porous substrate. These objects can be achieved by using a curable composition containing the following (A) and (B): (A) a cyanoacrylate compound; and (B) a hydrofluoroether having such a structure that the number of carbon atoms substituted only with fluorine in the molecule is 1 or more to 6 or less, and the number of carbon atoms in the molecule is less than 7.

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), provided that at least one of the cyanoacrylate monomer(s) is a cyanoacrylate monomer comprising a group —X—O—R.sup.b wherein X is a linear or branched alkylene radical optionally interrupted with one or several oxygen atom(s), and R.sup.b is an alkyl group; ⋅ a second part (component B) comprising: 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 at least one of the Michael acceptor(s) M comprises at least one group of formula -0(CHR.sup.a—CH.sub.2O).sub.n— where n ranges from 1 to 10 (Michael acceptor M1), and R.sup.a represents CH.sub.3 or H; and a nucleophilic initiator.

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), provided that at least one of the cyanoacrylate monomer(s) is a cyanoacrylate monomer comprising a group —X—O—R.sup.b wherein X is a linear or branched alkylene radical optionally interrupted with one or several oxygen atom(s), and R.sup.b is an alkyl group; ⋅ a second part (component B) comprising: 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 at least one of the Michael acceptor(s) M comprises at least one group of formula -0(CHR.sup.a—CH.sub.2O).sub.n— where n ranges from 1 to 10 (Michael acceptor M1), and R.sup.a represents CH.sub.3 or H; and a nucleophilic initiator.

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.