Pressure sensitive adhesive comprising blend of synthetic rubber and functionalized synthetic rubber bonded to an acrylic polymer
US8530578B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2010 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Nov 15, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2878
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A pressure sensitive adhesive composition is described comprising unfunctionalized (e.g. polyisobutylene) synthetic rubber and an acrylic polymer having functionalized polyisobutylene polymer bonded to the acrylic polymer. In some embodiments, the functionalized polyisobutylene polymer has a first functional group hydrogen bonded with a second functional group present in the acrylic polymer backbone. In other embodiments, the functionalized polyisobutylene polymer is covalently bonded to the acrylic polymer backbone. Also described are adhesive articles, such as a tape, methods of adhesively bonding, and methods of making a pressure sensitive adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.