Grafted telechelic polyisobutylenes possessing reactive functionality, processes for preparing the same and curable compositions comprising the same

A reactive functionalized, PIB grafted polymer comprising:

• an organic backbone Z, the backbone including one or more aliphatic groups, one or more aromatic groups, one or more heteroatoms or any combination thereof, wherein the backbone Z is not polyisobutylene;
• at least one reactive functionality terminal to the backbone;
• and at least two polyisobutylene groups Y pendant from the organic backbone Z,
• wherein the polymer is represented by one of the following formulas;
• wherein organic backbone Z has a linear chain structure having 1 to about 50 atoms selected from the group consisting of C, H, N, O and S;
• each M is independently selected from a covalent bond or an organic structure having 1 to about 20 atoms selected from the group consisting of C, H, N, O and S;
• X, X1, X2, X3 and X4 are each independently H or a reactive functionality selected from acrylate, methacrylate, acrylamide, allyl, styrenic, vinyl ether, maleimide and N-vinylamide, but at least one of X, X1, X2, X3 and X4 in any formula must be a reactive functionality;
• Y is a polyisobutylene group;
• L connects one polyisobutylene group to one atom of the Z organic backbone or one atom of the M portion and each L is independently selected from a covalent bond or an organic structure having 1 to about 30 atoms selected from the group consisting of C, H, N, O and S;
• R1 and R2 are each independently selected organic segments having 1 to about 30 atoms selected from the group consisting of C, H, N, O and S;
• m is an integer from 2-10;
• and
• n is an integer from 1-10.