Thermal stability of polyurethane-modified polyisocyanurate foam

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United States of America Patent

APP PUB NO 20090247657A1
SERIAL NO

12080109

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A polyurethane-modified polyisocyanurate (PU-PIR) foam exhibiting improved thermal stability is provided. The foam has incorporated therein a high molecular weight ammonium polyphosphate (APP). APP is employed as a partial or complete substitute for flame retardants conventionally employed in PU-PIR foams. The foams of the invention exhibit excellent and improved thermal stability characteristics as compared to foams to which no APP has been added.

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Patent Owner(s)

Patent OwnerAddress
STEPAN COMPANY22 WEST FRONTAGE ROAD NORTHFIELD IL 60093

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gabbianelli, Angelo R Waukegan , US 2 7
Kaplan, Warren A Libertyville , US 23 57
Norberg, David J Grayslake , US 6 12

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