Pressure-sensitive adhesives
US5225473A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1992 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Apr 9, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F226/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Hydrophilic, cohesive, pressure-sensitive adhesive compositions are provided comprising a) a crosslinked, swellable polymeric matrix made from an N-vinyl lactam monomer and a multi-ethylenically unsaturated compound, wherein the ethylenic groups are vinyl groups, allyl groups, and/or methallyl groups, which groups are bonded to nitrogen or oxygen atoms, and b) a plasticizer for the copolymer wherein the amount of the multi-ethylenically unsaturated compound and the plasticizer are present in amounts sufficient to render the polymeric matrix cohesive, swellable and pressure-sensitive adhesive. These compositions can also be used as adhesives for biomedical electrodes and transdermal drug delivery systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.