Flame retardant polyurethane foams

Details Flame retardant polyurethane foams Flame retardant polyurethane foams

1996-11-26

1998-03-24

Kelly, C. H.

Compositions

Fire retarding

For solid synthetic polymer and reactants thereof

521159, 521129, C09K 2100, C08G 1800

Patent

active

057309094

ABSTRACT:
The invention pertains to flame retardant flexible polyurethane foams prepared by reacting a polyether polyol and an organic isocyanate in the presence of a blowing agent and incorporating melamine and an effective amount of another flame retardant. The organic isocyanate comprises carbodiimide-uretonimine-modified diphenylmehtane diisocyanate and toluene diisocyanate. The polyurethane foams exceed conventional flame retardancy standards and exhibit flame spread index values of less than 25 as measured under flame test procedure ASTM D3675-90.

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