Pressure-sensitive adhesives and self-adhesive postage stamps made therewith
US6293037A · kind A · utility
24Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Sep 22, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31917
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Acrylic, self-adhesive postage stamps are provided and include a flexible facestock bearing an acrylic pressure-sensitive adhesive (PSA), protected by a release liner. The acrylic PSA is a tackified or inherently tacky polymer formed from a plurality of monomers comprising, based on the total weight of monomeric composition, essentially of (i) 9 to 40% isobornyl acrylate and (ii) 50 to 91% of one or more alkyl acrylates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.