Fire retardant for isocyanate-based foams comprising ammonium su

Details Fire retardant for isocyanate-based foams comprising ammonium su Fire retardant for isocyanate-based foams comprising ammonium su

1988-06-23

1990-03-13

Kight, John

Compositions

Fire retarding

For solid synthetic polymer and reactants thereof

252601, 252 7, 252 3, 521120, 521123, 521128, 423545, 528 48, 528 52, C09K 210, C08G 1808

Patent

active

049081616

ABSTRACT:
Ammonium sulfate powder is employed, alone, or in conjunction with a weakly basic powder to neuturalize the acidity of the sulfate, as a flame retardant for isocyanate-based foams and, in particular, rigid and flexible polyurethane foams.

REFERENCES:
patent: 2881088 (1959-04-01), Schulenburg
patent: 3737400 (1973-06-01), Kumusaka et al.
patent: 4272414 (1981-06-01), Vandersall
patent: 4301217 (1981-11-01), Rohringer et al.
patent: 4419401 (1983-12-01), Pearson
patent: 4436841 (1984-03-01), Rasshofer et al.
patent: 4486468 (1984-12-01), Gray
patent: 4552803 (1985-11-01), Pearson
patent: 4582524 (1986-04-01), Lokitz
patent: 4723959 (1988-02-01), Miyamachi et al.

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