Patent ID: 7473726

Claim:
A fire-resistant composition comprising at least: a) a star polyamide-based polyamide matrix comprising at least macromolecular chains of formula (I): R 1 —[-A-X—(—Y—R 2 -Z-) n —R 3 ] m (I) and, optionally, macromolecular chains of formula (II): R 4 —[—Y—R 2 -Z-] p —R 3 (II) wherein: Y is the radical: when X and Z represent the radical: Y is the radical: when X and Z represent the radical: A is a covalent bond or an aliphatic hydrocarbon-based radical optionally having hetero atoms and having from 1 to 20 carbon atoms; R 1 is a linear or cyclic, aromatic or aliphatic hydrocarbon-based radical having at least 2 carbon atoms, and optionally having hetero atoms; R 2 is an aliphatic or aromatic, branched or unbranched hydrocarbon-based radical having from 2 to 20 carbon atoms; R 3 and R 4 are independently selected from the group consisting of hydrogen, an —OH radical and/or a hydrocarbon-based radical having at least one group: R 5 represents hydrogen or a hydrocarbon-based radical having from 1 to 6 carbon atoms; m represents an integer between 3 and 8; n represents an integer between 50 and 200; and p represents an integer between 50 and 200; and b) a fire-resistant composition comprising at least; a compound (F1) of formula (VI): wherein: R 6 and R 7 are identical or different and represent a linear or branched alkyl chain having from 1 to 6 carbon atoms and/or an aryl radical; M is selected from the group consisting of a calcium, magnesium, aluminum and/or zinc ion; Z represents 2 or 3; and a compound (F2), which is a product of reaction between phosphoric acid and melamine and/or a product of reaction between phosphoric acid and a condensed melamine product.