Low-scorch flame-retardant polyurethane foams
AssigneeLANXESS Deutschland GmbH
InventorsHeiko Tebbe, Jan-Gerd Hansel
Life of this patent
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Abstract
Low-scorch flame-retardant polyurethane foams include phosphorus-containing propionic ester flame retardants. Methods for producing and using the foams are also provided.
Claims19
A flame-retardant polyurethane foam comprising at least one phosphorus-containing propionic ester of formula (I)
- where:
- R1 is hydrogen, or a straight-chain or branched alkyl moiety of 1 to 4 carbon atoms;
- and
- R2 is a straight-chain or branched alkyl moiety of 1 to 10 carbon atoms, or a cycloalkyl moiety of 3 to 10 carbon atoms.
A method for producing flame-retardant flexible polyurethane foam, the method comprising including at least one phosphorus-containing propionic ester of formula (I)
- where:
- R1 represents hydrogen or a straight-chain or branched alkyl moiety of 1 to 4 carbon atoms, and
- R2 represents a straight-chain or branched alkyl moiety of 1 to 10 carbon atoms or a cycloalkyl moiety of 3 to 10 carbon atoms,
- into the foam as a flame retardant during production of the foam.
A process for reducing at least one of core discolouration, scorch, and fogging in or from flame-retardant polyurethane foam, the process comprising including at least one phosphorus-containing propionic ester of formula (I)
- where:
- R1 represents hydrogen or a straight-chain or branched alkyl moiety of 1 to 4 carbon atoms, and
- R2 represents a straight-chain or branched alkyl moiety of 1 to 10 carbon atoms or a cycloalkyl moiety of 3 to 10 carbon atoms,
- into the foam during manufacture of the foam.
Dependencies are inferred from the claim text.