C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
403/13
C08G 18/66 (2006.01) B32B 5/18 (2006.01) C08G 18/32 (2006.01) C08G 18/40 (2006.01) C08G 18/50 (2006.01)
Patent
CA 1249697
ALKOXYLATED AROMATIC AMINE-AROMATIC POLYESTER POLYOL BLEND AND POLYISOCYANURATE FOAM THEREFROM Abstract Polyisocyanurate foams are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol blend comprising (a) about 5 percent to about 95 percent by weight of said blend of an alkylene oxide adduct of an aromatic amine of the formula Image wherein Z is a divalent aromatic radical, x, x', y, and y' each independently have an average value from about 1 to about 5, and each R is independently selected from the group consisting of hydrogen, alkyl or aryl, provided that the adduct is capped with ethylene oxide units, and (b) about 5 percent to about 95 percent by weight of said blend of an aromatic polyester polyol having a molecular weight of from about 150 to about 5,000. Laminates of such foams exhibit a high degree of fire resistance, low foam friability, high compressive strength, and excellent facer adhesion.
464598
Deleon Alberto
Snider Scott C.
Celotex Corporation (the)
Gowling Lafleur Henderson Llp
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