Flame retardant foamed polyester compositions

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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Details

252 81, 260 4575B, 260860, 260DIG24, C08J 906, C08L 6900

Patent

active

039364003

ABSTRACT:
Normally flammable foamed polyester resins (a) are rendered flame retardant by combination with (b) a flame retardant amount of (i) an aromatic carbonate copolymer, from 25 to 75 wt. % of the repeating units comprising chloro- or bromo-substituted dihydric phenol units; (ii) an aromatic carbonate homopolymer having repeating units comprising chloro- or bromo-substituted dihydric phenol units in combination with an aromatic carbonate homopolymer having repeating dihydric phenol units; or (iii) a combination of (i) with an aromatic carbonate homopolymer having repeating dihydric phenol units, and (c) an antimony-containing compound.

REFERENCES:
patent: 3334154 (1967-08-01), Kim
patent: 3406224 (1968-10-01), McDonough
patent: 3454672 (1969-07-01), Jackson et al.
patent: 3585254 (1971-06-01), Buck
patent: 3725321 (1973-04-01), Wirth et al.
patent: 3833685 (1974-09-01), Wambach
patent: 3839516 (1974-10-01), Williams et al.

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