Adhesives comprising poly(isobutylene) copolymers comprising pendent free-radically polymerizable quaternary ammonium substituent
OwnerHae-Seung Lee, Joon Chatterjee +1inventors
InventorsHae-Seung Lee, Joon Chatterjee, Babu N. Gaddam
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Abstract
Adhesive compositions comprising a copolymer of isobutylene repeat units and alkene repeat units are described. At least a portion of the alkene repeat units are bonded to a pendent nitrogen atom of a quaternary ammonium salt comprising a free-radically polymerizable substituent. The adhesive optionally comprises other components such as tackifier, unfunctionalized polyisobutylene polymer, plasticizer, and combinations thereof.
Claims18
An adhesive composition comprising a copolymer of isobutylene repeat units and alkene repeat units derived from isoprene, butadiene, or a combination thereof;
- wherein at least a portion of the alkene repeat units are bonded to a pendent nitrogen atom of a quaternary ammonium salt comprising a free-radically polymerizable substituent, wherein the copolymer is of the formula
- wherein a is at least 20, the sum of b and c is at least one, and Z is a quaternary ammonium salt group comprising a free-radically polymerizable substituent, and optionally a tackifier.
Dependencies are inferred from the claim text.