Thermoformable polyisocyanurate foam laminates for interior finishing applications
AssigneeThe Celotex Corporation
InventorsKenneth P. Klapper, Wayne E. Laughlin, John P. Oliver
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Abstract
Thermoformable polyisocyanurate foams are prepared by reacting together under foam-forming conditions an organic polyisocyanate and an isocyanate-reactive compound, especially an aromatic polyester polyol, the equivalent ratio of isocyanate groups to isocyanate reactive groups being at least about 1.2:1. The foams and faced composites thereof can be thermoformed for a wide range of uses, such as in the interior of motor vehicles, aircraft, ships and other transport means, and of both residential and commercial buildings.
Claims29
A molded polyisocyanurate foam prepared by thermoforming the reaction product made under foam-forming conditions of an organic polyisocyanate and a polyol component selected from the group consisting of (i) a polyester polyol and (ii) a polyester polyol and at least one other OH-containing compound, the equivalent ratio of isocyanate groups to hydroxyl groups being at least 1.5 to 1, and the reaction under foam-forming conditions being conducted in the presence of a trimerization catalyst.
A molded polyisocyanurate foam prepared by thermoforming the reaction product made under foam-forming conditions in the presence of a trimerization catalyst of an organic polyisocyanate containing at least 50 weight percent of polymeric MDI and a polyol comprising a polyester polyol and optionally at least one member selected from the group consisting of polyether polyols, polyesterether polyols and mixtures thereof, the equivalent ratio of isocyanate groups to hydroxyl groups being at least 1.5 to 1.
Dependencies are inferred from the claim text.