Thermally stable clear polyurethane adhesive tape
US6726971B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1999 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31554
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Flame retardant, clear pressure-sensitive adhesive tape comprises clear polyether-based polyurethane backing film and clear, polyether-based polyurethane pressure sensitive adhesive coated on one side of the backing film. Flame retardant is incorporated into the polyurethane backing film and the polyurethane adhesive to render the tape substantially flame retardant without causing a loss of the substantial transparency of the tape. The tape meets the following flame retardancy requirements: maximum average burn extinguishing time of 15 seconds, maximum average burn length of 8 inches and maximum average drip extinguishing time of 5 seconds, measured in accordance with defined test methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.