Radiation curable urethane (meth)acrylate polymer and adhesives formulated with them
US7932302B2 · kind B2 · utility
6Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2006 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Feb 25, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
UV curable urethane (meth)acrylate polymers of Formula (1), where: R1 and R′ are each independently hydrogen or C1-20hydrocarbo, R2, R′2, R3 and R4 are each independently optionally substituted divalent organo group, and p is an integer from about 6 to about 100 which are useful as laminating and/or pressure sensitive adhesives are disclosed as is methods of making them. The oligomers/polymers comprise a urethane extended backbone formed by reacting diisocyanates with polyols derived from rubber oligomers/polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.