RIGID FOAMS WITH IMPROVED INSULATION AND PHYSICAL PROPERTIES

Rigid polyurethane foams are produced by reacting an organic polyisocyanate with an amine-initiated polyol produced with an alkylene oxid e comprising propylene oxide, said polyol having a molecular weight of at leas t 149 and a functionality of at least three in the presence of a catalyst, a hydrog...

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Bibliographic Details
Main Author DOERGE, HERMAN P
Format Patent
LanguageEnglish
French
Published 01.12.2009
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:Rigid polyurethane foams are produced by reacting an organic polyisocyanate with an amine-initiated polyol produced with an alkylene oxid e comprising propylene oxide, said polyol having a molecular weight of at leas t 149 and a functionality of at least three in the presence of a catalyst, a hydrogen--containing fluorocarbon and a minor amount of water at an isocyanate index of from 0.9 to 3.1. These foams are characterized by initial K-factors which are about 0.135 BTU-in./hr.ft.2 .degree.F or less.
Bibliography:Application Number: CA19952156383