RIGID POLYURETHANE FOAMS

Process for the preparation of rigid polyurethane foams comprising the step of reacting an organic polyisocyanate with an isocyanatereactive material in the presence of a blowing promotor which is an isocyanate-reactive cyclic carbonate or cyclic urea, and in the presence of an inert, insoluble orga...

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Bibliographic Details
Main Authors DE VOS, RIK, KEANE, NORMAN WASHINGTON
Format Patent
LanguageEnglish
French
Published 26.01.1995
Edition6
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
BUILDING
CEILINGS
CHEMISTRY
COMPOSITIONS BASED THEREON
FIXED CONSTRUCTIONS
FLOORS
GENERAL BUILDING CONSTRUCTIONS
GENERAL PROCESSES OF COMPOUNDING
INSULATION OR OTHER PROTECTION OF BUILDINGS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
ROOFS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WALLS, e.g. PARTITIONS
WORKING-UP
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Summary:Process for the preparation of rigid polyurethane foams comprising the step of reacting an organic polyisocyanate with an isocyanatereactive material in the presence of a blowing promotor which is an isocyanate-reactive cyclic carbonate or cyclic urea, and in the presence of an inert, insoluble organic liquid and a metal salt catalyst and a polyether polyol of average nominal functionality 2 to 6 and number average equivalent molecular weight between 1000 and 2000.
Bibliography:Application Number: CA19942166071