Flame retardant, self-extinguishing polyurethanes and polyurethane foams
First Claim
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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Accused Products
Abstract
A reactive fire retardant mixture useful in the preparation of polyurethane foams. The mixture contains a halogenated imide-containing polyol having the formula: ##STR1## and the corresponding ether having the formula: ##STR2## wherein R is a hydrocarbon group having the valance 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. They are prepared by reacting an alcohol (e.g. isopropyl alcohol), a halogenated dicarboxylic anhydride (e.g. tetrabromophthalic anhydride) and an aminopolyol (e.g. 2-amino-2-ethyl-1,3-propanediol).
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Citations
6 Claims
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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. - View Dependent Claims (2)
- ##STR21## and about 99-1 weight percent of the corresponding ether having the formula;
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3. A polyurethane foam made by the process of reacting a mixture comprising
(a) a reactive fire retardant mixture comprising about 1-99 weight percent of a halogenated imide-containing polyol having the formula: - ##STR25## and about 99-1 weight percent of the corresponding ether having the formula;
##STR26## 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.(b) a non-halogenated polyol, (c) a polyisocyanate, (d) a catalyst, (e) a blowing agent and (f) a surfactant. - View Dependent Claims (4)
- ##STR25## and about 99-1 weight percent of the corresponding ether having the formula;
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5. A flame retardant, self-extinguishing polyurethane characterized by having chemically bonded within its structure the flame retardant group:
- ##STR29## 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.
- View Dependent Claims (6)
Specification