Exterior window film
US9303132B2 · kind B2 · utility
1Cited by
22References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2009 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Dec 20, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2843
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A transparent exterior window film composite comprising a base sheet material having an outer PET (polyethylene terephthalate) film layer which has been surface treated to elevate adhesion thereto and which is impregnated with an ultra violet light absorber (UVA), the treated surface being coated with a UV stabilized acrylic polymer or co-polymer undercoat having a UV stabilized hard coat layer thereon formed from at least one aliphatic urethane acrylate oligomer and at least one multifunctional acrylate monomer, the undercoat layer having a thickness which is at least as thick as the hard coat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.