Isobutylene (co)polymeric adhesive composition

摘要

Adhesive compositions are described comprising a) a non-functional isobutylene (co)polymer, b) an amine-functional poly(isobutylene) polymer, optionally an acid-functional (meth)acrylate copolymer, and optionally a tackifier.

主权项

1. An adhesive article comprising a substrate and a layer of pressure-sensitive adhesive on at least one surface of the substrate, the adhesive 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; wherein the adhesive has a storage modulus of 3×106 dynes/cm2 at room temperature and oscillation frequency of 1 Hz; and wherein the adhesive combined 25-35wt % of the amine-functional poly(isobutylene) polymer and the tackifier.