Novel polyurethane compositions and methods of preparing same

Claim 1

A FIRE-RESISTANT, CELLULAR REACTION PRODUCT PRODUCED BY REACTING (I) A COMPOSITION COMPRISING A MIXTURE OF (A) AN ALKYD RESIN SELECTED FROM THE GROUP CONSISTING OF (1) THE REACTION PRODUCT OF (A) AN ADDUCT OF HEXAHALOCYCLOPENTADIENE AND A POLYCARBOXYLIC COMPOUND CONTAINING ALIPHATIC CARBON-TO-CARBON UNSATURATION, AND (B) A POLYHYDRIC ALCOHOL CONTAINING AT LEAST THREE HYDROXYL GROUPS, (2) THE REACTION PRODUCT OF (A) AN ADDUCT OF HEXAHALOCYCLOPENTADIENE AND A POLYHYDRIC ALCOHOL CONTAINING ALIPHATIC CARBON-TO-CARBON UNSATURATION, (B) A POLYHYDRIC ALCOHOL CONTAINING AT LEAST THREE HYDROXYL GROUPS AND (C) A POLYCARBOXYLIC COMPOUND, (3) THE REACTION PRODUCT OF (A) AN ADDUCT OF HEXAHALOCYCLOPENTADIENE AND A POLYHYDRIC ALCOHOL CONTAINING ALIPHATIC CARBON-TO-CARBON UNSATURATION, AND (B) A POLYCARBOXYLIC COMPOUND CONTAINING AT LEAST THREE CARBOXYL GROUPS, AND (4) MIXTURES THEREOF, WHEREIN THE HALOGEN IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, FLUORINE, BROMINE AND MIXTURES THEREOF, AND (B) A LOW MOLECULAR WEIGHT POLYESTER HAVING AT LEAST THREE HYDROXYL GROUPS PER MOLECULE AND A HYDROXYL NUMBER IN THE RANGE OF 200 TO 950; WITH (II) AN ORGANIC POLYISOCYANATE, IN THE PRESENCE OF (III) A FOAMING AGENT.