Polyisobutylene adhesive comprising multifunctional component with (meth)acryl or vinyl ether groups
US12281241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2020 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Mar 31, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2423/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An adhesive composition is described comprising a polyisobutylene polymer component; and up to 30 wt.-% of at least one aliphatic multifunctional component comprising at least two ethylenically unsaturated groups selected from (meth)acryl or vinyl ether. The monomer comprises a hydrocarbon moiety with greater than 12 contiguous carbon atoms. When the hydrocarbon moiety is branched, the hydrocarbon moiety comprises side chains with at least two carbon atoms. The aliphatic multifunctional component is sufficiently compatible such that crosslinked adhesive composition at a thickness of 20 microns has a haze of less than 3%. Also described are adhesive articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.