The present invention is directed to a curable and electrochemically debondable adhesive composition comprising, based on the weight of the composition: from 40 to 99 wt. % of a) at least one ethylenically unsaturated non-ionic monomer; from 0.9 to 50 wt. % of b) at least one polymerizable ionic compound, wherein said polymerizable ionic compound comprises: b1) at least one compound in accordance with general formula IV; and/or b2) at least one compound in accordance with general formula V; and, from 0.1 to 10 wt. % of c) at least one free radical initiator.

##STR00001##

The present invention is directed to a curable and electrochemically debondable adhesive composition comprising, based on the weight of the composition: from 40 to 99 wt. % of a) at least one ethylenically unsaturated non-ionic monomer; from 0.9 to 50 wt. % of b) at least one polymerizable ionic compound, wherein said polymerizable ionic compound comprises: b1) at least one compound in accordance with general formula IV; and/or b2) at least one compound in accordance with general formula V; and, from 0.1 to 10 wt. % of c) at least one free radical initiator.

##STR00001##

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.

Provided is an adhesive that is resistant to peeling off during heat-curing when a lens holder is adhered to a substrate having an image sensor fixed thereon in assembling a camera module, and that has excellent thermal durability after being cured. A thermal- and UV-curing adhesive composition contains (a) at least one urethane acrylate oligomer containing at least one polycarbonate-based urethane acrylate oligomer, (b) at least one acrylate monomer, (c) at least one particulate rubber, (d) at least one polyamine curing agent having a primary amine and/or a secondary amine, and (e) at least one photopolymerization initiator, wherein the at least one urethane acrylate oligomer (a) has a weight average molecular weight of 4,000 or more, and the at least one particulate rubber (c) is present in an amount of 5% by weight or more in the entire composition.

Provided is an adhesive that is resistant to peeling off during heat-curing when a lens holder is adhered to a substrate having an image sensor fixed thereon in assembling a camera module, and that has excellent thermal durability after being cured. A thermal- and UV-curing adhesive composition contains (a) at least one urethane acrylate oligomer containing at least one polycarbonate-based urethane acrylate oligomer, (b) at least one acrylate monomer, (c) at least one particulate rubber, (d) at least one polyamine curing agent having a primary amine and/or a secondary amine, and (e) at least one photopolymerization initiator, wherein the at least one urethane acrylate oligomer (a) has a weight average molecular weight of 4,000 or more, and the at least one particulate rubber (c) is present in an amount of 5% by weight or more in the entire composition.

An easily water-dismantlable adhesive composition containing a 2-cyanoacrylate compound represented by Formula (1): in which L.sup.1's each independently represent —CH.sub.2CH.sub.2—, —CH(R.sup.1)CH.sub.2—, or —CH.sub.2CH(R.sup.1)—, R.sup.1 represents an alkyl group having 1 to 3 carbon atoms, R.sup.2 represents a linear or branched alkyl group having 1 to 4 carbon atoms, p represents an integer of 3 to 6, and, among p -L.sup.1-O—'s in Formula (1), 2 to 4 -L.sup.1-O—'s are —CH.sub.2CH.sub.2—O—, and 0 to 2 -L.sup.1-O—'s are —CH(R.sup.1)CH.sub.2— and/or —CH.sub.2CH(R.sup.1)—O—.

##STR00001##

An easily water-dismantlable adhesive composition containing a 2-cyanoacrylate compound represented by Formula (1): in which L.sup.1's each independently represent —CH.sub.2CH.sub.2—, —CH(R.sup.1)CH.sub.2—, or —CH.sub.2CH(R.sup.1)—, R.sup.1 represents an alkyl group having 1 to 3 carbon atoms, R.sup.2 represents a linear or branched alkyl group having 1 to 4 carbon atoms, p represents an integer of 3 to 6, and, among p -L.sup.1-O—'s in Formula (1), 2 to 4 -L.sup.1-O—'s are —CH.sub.2CH.sub.2—O—, and 0 to 2 -L.sup.1-O—'s are —CH(R.sup.1)CH.sub.2— and/or —CH.sub.2CH(R.sup.1)—O—.

##STR00001##

An easily water-dismantlable adhesive composition containing a 2-cyanoacrylate compound represented by Formula (1): in which L.sup.1's each independently represent —CH.sub.2CH.sub.2—, —CH(R.sup.1)CH.sub.2—, or —CH.sub.2CH(R.sup.1)—, R.sup.1 represents an alkyl group having 1 to 3 carbon atoms, R.sup.2 represents a linear or branched alkyl group having 1 to 4 carbon atoms, p represents an integer of 3 to 6, and, among p -L.sup.1-O—'s in Formula (1), 2 to 4 -L.sup.1-O—'s are —CH.sub.2CH.sub.2—O—, and 0 to 2 -L.sup.1-O—'s are —CH(R.sup.1)CH.sub.2— and/or —CH.sub.2CH(R.sup.1)—O—.

##STR00001##

Two part curable compositions are provided which include a first part comprising a (meth)acrylate component and an amine and a second part comprising a fatty acid peroxide. Further disclosed are methods of preparing a two part adhesive composition using the two part curable compositions and methods of bonding surfaces using the two part curable compositions.

Two part curable compositions are provided which include a first part comprising a (meth)acrylate component and an amine and a second part comprising a fatty acid peroxide. Further disclosed are methods of preparing a two part adhesive composition using the two part curable compositions and methods of bonding surfaces using the two part curable compositions.