Layered reflecting and photoluminous fire resistant material
US6159878A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 1999 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Jan 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/699
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Flexible, fire resistant, layered reflecting and photoluminous material is provided which combines the advantages of a light reflective component and a luminescent component in a fire resistant structure which meets National Fire Protection Association standards for inclusion in firefighter's protective clothing. The material includes a first layer of microspherical glass bead or prismatic light reflective plastic material having an underlying surface formed with a plurality of minute prism-like formations projecting therefrom at regular spaced intervals and an overlying substantially smooth light transmissive surface; a second layer containing a homogeneous blend of a resin containing effective amounts of fire retardant, photoluminescent and, optionally luminescent additives; and a third layer which is a fire retardant fabric. The layers are joined at a first region such that the prism-like formations are substantially disabled or destroyed. A second region is thereby defined at which the first, second and third layers are physically distinct. In the second region, the layered material simultaneously radiates phosphorescent and reflected light from the prism-like formations throug…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.