Polyisocyanurate coverboards with improved fire resistance

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11913222
SERIAL NO

17592178

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
HOLCIM TECHNOLOGY LTDGRAFENAUWEG 10 ZUG 6300

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hubbard, Michael J Murfreesboro, US 115 932
Letts, John B Carmel, US 54 608
Yao, Chunhua Carmel, US 38 98

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