POLYISOCYANURATE FOAM FOR ROOF STRUCTURES

Prepare a polyisocyanurate insulating foam that achieves a Class A rating in ASTM E108-05 testing with either EPDM or TPO membranes at a slope of 1.27 centimeters and achieves at least a grade 2 designation in ASTM method C-1289 compressive strength testing with a foamable mixture containing (a) 100...

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Bibliographische Detailangaben
Hauptverfasser:	SKOWRONSKI MICHAEL J, CRAIN STEVEN P
Format:	Patent
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	Prepare a polyisocyanurate insulating foam that achieves a Class A rating in ASTM E108-05 testing with either EPDM or TPO membranes at a slope of 1.27 centimeters and achieves at least a grade 2 designation in ASTM method C-1289 compressive strength testing with a foamable mixture containing (a) 100 parts by weight polyol; (b) 2-9 parts by weight potassium and/or sodium carboxylate salts; (c) 0.05-0.45 parts by weight of one or more quaternary amine; (d) zero to 0.4 parts by weight of an additional catalyst selected from secondary amine, tertiary amine, tin and/or iron catalyst; (e) optionally a solvent; (f) an isocyanate containing compound; and (g) a blowing agent; wherein the molar ratio of (b) to (c) is in a range of 17:1 to 100:1.