Patent ID: 11859084
Assignee: CLARIANT INTERNATIONAL LTD
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A flame-retardant polyamide composition, comprising:
as component A) 1% to 47.6% by weight of one or more colored thermoplastic polyamides;
as component B) 2% to 25% by weight of a dialkylphosphinic salt of the formula (I), , in which
R1 and R2 are the same or different and are C1-C18 alkyl in linear, branched or cyclic form, C6-C18 aryl, C7-C18 arylalkyl, and/or C7-C18 alkylaryl,
M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K, and/or a protonated nitrogen base,
m is 1 to 4,
as component C) >15% to 20% by weight of at least one further polymer component selected from a polyalkylene terephthalate;
as component D) 0 to 20% by weight of a salt of phosphorous acid of the formula (II)

[HP(═O)O2]2−Mm+  (II), in which
M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, and/or K;
as component E) 0% to 20% by weight of one or more condensation products of melamine and/or reaction products of melamine with phosphoric acids and/or melamine cyanurate;
as component F) 0% to 50% by weight of filler and/or reinforcer;
as component G) 0-5% of a compatibilizer for the polymer components;
as component H) 0% to 2% by weight of phosphite or phosphonite or mixtures thereof; and
as component I) 0% to 2% by weight of an ester or salt of long-chain aliphatic carboxylic fatty acid having chain lengths of C14 to C40,
wherein the sum total of the components is always 100% by weight wherein the dE*ab (D65) value after 7 days in water is between 0.15 and 0.8.