Flame retardant polyurethanes and additives therefor

A free-flowing, stable liquid flame retardant mixture comprised of or formed by mixing together components comprised of: A) at least one organic halogen-containing reactive flame retardant in which the halogen is bromine, chlorine or both; and B) a liquid additive that is comprised of at least one a...

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description A free-flowing, stable liquid flame retardant mixture comprised of or formed by mixing together components comprised of: A) at least one organic halogen-containing reactive flame retardant in which the halogen is bromine, chlorine or both; and B) a liquid additive that is comprised of at least one aliphatic polyepoxide of the formula R(EP)n, wherein R is a straight chain or branched chain aliphatic moiety which consists of carbon, hydrogen, and optionally, one or more ether oxygen atoms and/or one or more epoxy oxygen atoms; Ep is a terminal epoxy group: and n is a whole or fractional number in the range of 2 to about 6. Such mixtures can be effectively used in the preparation of flame retardant rigid polyurethanes and rigid foams thereof, and rigid polyisocyanurate and rigid foams thereof. Component B) serves as an effective hardener for such polymers and foams. It is preferable to include in the liquid flame retardant mixture one or more phosphorus-containing flame retardant additives such a fully-esterified ester of a pentavalent acid of phosphorus, e.g., an organic phosphate or organic phosphonate.
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subjects ADHESIVES
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DYES
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
WORKING-UP
title Flame retardant polyurethanes and additives therefor
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