Foam laminates which include astm e-84 class 1 rated foams

Details Foam laminates which include astm e-84 class 1 rated foams Foam laminates which include astm e-84 class 1 rated foams

B - Operations, Transporting

32

B

154/123.3

B32B 5/18 (2006.01) B32B 27/40 (2006.01) C08G 18/40 (2006.01) C08G 18/76 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2026258

A foam laminate comprising a polyurethane foam core sandwiched between two facing material, wherein said foam core has: a flamespread as determined by ASTM E-84 of 25 or less, a smoke density as determined by ASTM E-84 of less than 450, a dimensional stability measured as a % volume change as determined by ASTM D-2126, after 28 days (1) at -30°C of no more than 1, (2) at 100°C of no more than 8, and (3) at 70°C and 100% relative humidity of no more than 12, and a firmness of no more than 0.6 centimeters after 5 minutes. The foam core is produced by reacting: a polymethylene poly(phenyl isocyanate) based isocyanate, one or more aromatic polyester polyols having hydroxyl functionalities of 2.4 or more and hydroxyl numbers of 350 or more, one or more polyether polyols having hydroxyl functionalities of 4 or more and hydroxyl numbers of 340 or more, one or more flame retardants, and, one or more blowing agents, one or more catalysts, and one or more surfactants.

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