REWORKABLE ADHESIVE COMPOSITION

1 . A reworkable adhesive composition, comprising,

(1) a first (meth)acrylic monomer, having a glass transition temperature higher than 130° C.,

(2) a second (meth)acrylic monomer, having a glass transition temperature from 80° C. to 130° C.,

(3) a third (meth)acrylic monomer, having a glass transition temperature greater than or equal to 0° C. and less than 80° C.,

(4) a polymeric elastomer, and

(5) an initiator.

2 . The reworkable adhesive composition according to claim 1 , wherein the first (meth)acrylic monomer has a glass transition temperature from 160° C. to 250° C.

3 . The reworkable adhesive composition according to claim 1 , wherein the first (meth)acrylic monomer is selected from methacrylic acid, glacial methylic acid, isobornyl methacrylate, dicyclopentadieyl methacrylate, acrylamide, methacryamide, and combination thereof.

4 . The reworkable adhesive composition according to claim 1 , wherein the second (meth)acrylic monomer has a glass transition temperature from 90° C. to 120° C.

5 . The reworkable adhesive composition according to claim 1 , wherein the second (meth)acrylic monomer is selected from methyl methacrylate, 2,2,2-trifluoroethyl methacrylate, cyclohexyl methacrylate, isobornyl acrylate, tert-butyl methacrylate, dihydrocyclopentadienyl acrylate, dicyclopentadienyl acrylate, glacial acrylic acid, acrylic acid, N-tert-butylacryamide, N,N-dimethylacryamide, and combination thereof.

6 . The reworkable adhesive composition according to claim 1 , wherein the third (meth)acrylic monomer has a glass transition temperature from 10° C. to 70° C.

7 . The reworkable adhesive composition according to claim 1 , wherein the third (meth)acrylic monomer is selected from methyl acrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, n-butyl methylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, isobutyl methacrylate, allyl methacrylate, benzyl methacrylate, tert-butyl acrylate, 2-hydroxyethyl methacrylate, tetrahydrofurfuryl methacrylate, ethyl methacrylate, and combination thereof.

8 . The reworkable adhesive composition according to claim 1 , wherein the polymeric elastomer is selected from core shell polymers, block copolymer rubbers and mixtures thereof.

9 . The reworkable adhesive composition according to claim 1 , wherein the initiator is selected from benzoyl peroxide, tert-butylperoxybenzoate, cumene hydroperoxide, tertiary butyl hydroperoxide, dicumyl peroxide, tertiary butyl peroxide acetate, and combination thereof.

10 . The reworkable adhesive composition according to claim 1 , which further comprises a fourth (meth)acrylic monomer, having a glass transition temperature below 0° C.

11 . An article, comprising a first substrate, a second substrate, and an adhesive bonding the first substrate and the second substrate and formed by the curing of a reworkable adhesive composition according to claim 1 .

12 . A process of bonding a first substrate to a second substrate, comprising applying a reworkable adhesive composition according to claim 1 to the first substrate, placing a second substrate into contact with reworkable adhesive composition, and allowing sufficient time for the reworkable adhesive composition to cure to bond the first substrate to the second substrate.

13 . (canceled)

14 . A kit for providing a two-component reactive adhesive formulation, said kit comprising a Part A chamber and a Part B chamber, said Part A chamber containing a Part A composition, said Part B chamber containing a Part B composition which is reactable with said Part A composition, said Part A composition and said Part B composition being combinable in a preselected weight ratio to yield an adhesive composition comprising a first (meth)acrylic monomer, having a glass transition temperature higher than 130° C., a second (meth)acrylic monomer, having a glass transition temperature from 80° C. to 130° C., a third (meth)acrylic monomer, having a glass transition temperature greater than or equal to 0° C. and less than 80° C., a polymeric elastomer, and an initiator.

15 . A kit according to claim 14 , wherein each of said Part A chamber and said Part B chamber is selected from the group consisting of drums, barrels and pails.