Polyisocyanurate coverboards with improved fire resistance
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 8, 2022
Grant Date -
Apr 15, 2021
app pub date -
Dec 22, 2020
filing date -
May 5, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A construction board includes a foam body having first and second planar surfaces, said foam body including a polyisocyanurate foam matrix defining a plurality of closed cells, said closed cells being at least substantially devoid of hydrocarbon blowing agents, and said foam body being characterized by a density, pursuant to ASTM C303, of at least 2.5 lbs/ft3; and a facer disposed on a planar surface of said foam body, said facer including a glass substrate having an internal planar surface proximate to said foam body and an external planar surface opposite said foam body, a first coating disposed on said external surface, and a second coating disposed on or proximate to said internal surface, where said first coating disposed on said external surface includes an inert filler, and where said second coating disposed on or proximate to said internal surface includes intumescent material.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2020 Application Filing Year
- C03C Class
- 883 Applications Filed
- 456 Patents Issued To-Date
- 51.65 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C03C Class
- 0 % this patent is cited more than
- 3 Age
Maintenance Fees
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