Foam systems and ASTM E-84 class 1 rated foams produced therefro

Details Foam systems and ASTM E-84 class 1 rated foams produced therefro Foam systems and ASTM E-84 class 1 rated foams produced therefro

1987-06-22

1989-01-10

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521138, 521139, 521140, 521147, 521150, 521155, 521157, 521164, 521172, 521174, 521182, 521184, 521906, C08G 1842

Patent

active

047974281

ABSTRACT:
Rigid flame resistant polyurethane foams are made by reacting an aromatic polyisocyanate with a mixture of 25-75% oligoester and another isocyanate-reactive material in the presence of a blowing agent at an NCO index of less than 300. These foams which have an ASTM E-84 Class 1 rating are particularly useful in construction applications.

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