Polyester-polyether hybrid urethane acrylate oligomer for UV curing pressure sensitive adhesives
US7166649B2 · kind B2 · utility
13Cited by
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28Claims
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Key dates
| Filing date | Apr 27, 2004 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | May 11, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2896
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is a pressure sensitive adhesive (PSA) composition, which is the ultraviolet radiation (UV) cured reaction product of a polyester-polyether-based urethane acrylate, one or more acrylate monomers, and a UV photosensitizer. The polyester-polyether-based urethane acrylate is the reaction product of between about 50 and 90 wt-% of a polyester diol having a molecular weight ranging from about 500 to 3200; between about 10 and 50 wt-% of a polyether polyol having a molecular weight ranging from about 1000 to 6000; between about 1 and 5 wt-% of a hydroxy-functional acrylate; and a polyisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.