Isobutylene (Co)polymeric adhesive composition

1. An adhesive composition comprising:

a) greater than 50 wt. % of a non-functional isobutylene (co)polymer,

b) 0.25 to 20 wt. % of an amine-functional poly(isobutylene) polymer,

c) 0.5 to 5 wt. % of an acid-functional (meth)acrylate copolymer,

d) 0 to 40 wt. % of a tackifier; and

e) 0 to 40 wt. % of a plasticizer.

2. The adhesive composition of claim 1 comprising 0 wt. % acid-functional (meth)acrylate copolymer.

3. The adhesive composition of claim 1 comprising a combined 25-35 wt. % of the amine-functional poly(isobutylene) polymer and the tackifier.

4. The adhesive composition of claim 1 wherein the acid-functional (meth)acrylate copolymer comprises 80 to 99 wt. % of (meth)acrylic acid ester monomers and 1 to 20 wt. % of acid-functional monomers.

5. The adhesive composition of claim 1 wherein said amine-functional poly(isobutylene) polymer has a number average molecular weight of less than 10,000 g/mole.

6. The adhesive composition of claim 1 wherein the (meth)acrylic acid ester monomers is a C 4 to C 20 (meth)acrylic acid ester monomers.

7. The pressure sensitive adhesive composition of claim 6 wherein the (meth)acrylic acid ester monomers is a C 4 to C 8 (meth)acrylic acid ester monomer.

8. The adhesive composition of claim 1 further comprising a tackifying resin, a plasticizer, or a mixture thereof.

9. The adhesive composition of claim 1 having a storage modulus of 3×10 6 dynes/cm 2 at room temperature and oscillation frequency of 1 Hz.

10. The adhesive composition of claim 1 , wherein the amine-functional poly(isobutylene) polymer is of the general formula:

wherein

R 1 is a polymeric radical of isobutylene having 5 to 100 repeat units, and R 2 and R 3 are independently selected from H, C 1 -C 10 -alkyl or aryl groups.

11. The adhesive composition of claim 1 comprising 1 to 15 wt. % of the amine-functional poly(isobutylene) polymer.

12. The adhesive composition of claim 1 comprising 1 to 40 wt. % tackifier.

13. An article comprising:

a substrate; and

the pressure-sensitive adhesive of claim 1 coated on at least one surface of the substrate.

14. The article of claim 13 wherein the substrate in a polymer film substrate.

15. The article of claim 13 wherein the substrate in a nonwoven substrate.

16. A method of bonding comprising:

providing a substrate;

applying the adhesive of claim 1 on a surface of the substrate; and

contacting the adhesive with another substrate.

17. The method of claim 16 wherein the substrate has a surface energy of less than 37 dynes/cm.

18. The method of claim 16 wherein the substrate is subsequently exposed to wet, moist, or humid conditions.

19. A method of making a pressure sensitive adhesive comprising blending:

a) greater than 50 wt. % of a non-functional isobutylene (co)polymer,

b) 0.25 to 20 wt. % of an amine-functional poly(isobutylene) polymer,

c) 0.5 to 5 wt. % of an acid-functional (meth)acrylate copolymer,

d) 0 to 40 wt. % of a tackifier; and

e) 0 to 40 wt. % of a plasticizer.