Polyisocyanurate rigid foams

Details Polyisocyanurate rigid foams Polyisocyanurate rigid foams

1989-10-17

1991-02-26

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521108, 521124, 521125, 521132, 521160, 521170, 521172, 521174, C08G 1818, C08G 1822, C08G 1876

Patent

active

049962418

ABSTRACT:
Polyisocyanurate Rigid Foams having improved fire resistance and smoke emission characteristics can be achieved by employing high isocyanurate index (e.g., at least 500) together with a high relative amount of the polyisocyanurate in the foam formulation. Trimerization catalysts can be employed to prepare the polyisocyanurate foam.

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Cunningham et al.; "A Study of the Low Smoke Potential, Flame Resistance and Processibility of High Index Polyisocyanurate Rigid Foam"; Polyurethanes World Congress 1987; Sep. 29, 1987; pp. 454-461.

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