Patent · US Active

Foam insulation with enhanced fire and smoke performance

US10563033B2 · kind B2 · utility

1Cited by

1References

16Claims

0Family size

Assignee

Johns Manville · US

Inventors

Malay Nandi · Littleton, US
Lance Wang · Parker, US
Jawed Asrar · Englewood, US

Key dates

Filing date	Sep 28, 2017
Grant date	Feb 18, 2020
Priority date	—
Expiry date	Nov 10, 2037

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE04B1/942
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A polyisocyanurate foam insulation product includes polyisocyanurate foam produced from reacting an isocyanate and a polyol blend having a functionality of at least 2.2. The isocyanate and the polyol blend are reacted so that the polyisocyanurate foam has an isocyanate index equivalent with or greater than 300. The polyisocyanurate foam includes a fire retardant and includes between 0.02 and 0.45 weight percent of a zinc salt compound. The foam insulation board exhibits a flame spread of no greater than 25 and a smoke index of no greater than 50 when exposed to flame conditions in accordance with an ASTM E-84 test.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.