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Flame retardant, self-extinguishing polyurethanes and polyurethane foams

  • US 4,585,806 A
  • Filed: 12/12/1984
  • Issued: 04/29/1986
  • Est. Priority Date: 09/17/1981
  • Status: Expired due to Fees
First Claim
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1. A flame retardant, self-extinguishing polyurethane comprising the reaction product of(a) a reactive fire retardant mixture comprising about 1-99 weight percent of a halogenated imide-containing polyol having the formula:

  • ##STR21## and about 99-1 weight percent of the corresponding ether having the formula;

    ##STR22## wherein R is a hydrocarbon group having the valence n+2 and is selected from the group consisting of benzene groups, naphthalene groups and alicyclic hydrocarbon groups containing 5 to 10 carbon atoms, R'"'"' is an aliphatic hydrocarbon group containing 3-12 carbon atoms, X is selected from the group consisting of bromine and chlorine, n is an integer from 1-6 and p is an integer from 2-6 said mixture being about 2-40% of said polyurethane,(b) a polyisocyanate in an amount that is 80-150% of the stoichiometric amount required to react with all reactive H atoms on hydroxyl and amine groups and(c) optionally, a polyol and/or polyamine.

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