Flame-retardant polyamide composition

• Main Authors: Schlosser, Elke, Höerold, Sebastian
• Format: Patent
• Language: English
• Published: 09.03.2021
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; 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

The invention relates to a flame-retardant, polyamide composition containing as component A) 1 - 96 wt.% of one or more thermoplastic polyamides, as component B) 2 - 25 wt.% of a dialkylphosphinic acid salt of formula (I) and/or a diphosphinic acid salt of formula (II) and/or polymers thereof, wherein R1, R2 are the same or different and C1-C6-alkyl are linear or branched or H, R3 represents C1-C10-alkylene, linear or branched, C6-C10-alkylene, linear or branched, C7-C20-arylalkylene; M represents C7-C20-arylalkylene; M represents Mg, Ca, AI, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base; m is 1 - 4; n is 1 - 4; x is 1 - 4, as component C) 1 - 20 wt.% of a salt of the phosphoric acid, as component D) 1 - 20 wt.% of a phosphazene, as component E) 0 - 50 wt.% of a filling or reinforcing agent, as component F) 0 - 1 wt.% of a phosphonite or a mixture of phosphonite and a phosphite, and as component G) 0 - 1 wt.% of an ester or salt of long-chained aliphatic carboxylic acids (fatty acides), with the typical chain lengths of C14 - C40, the total of the components always amounting to 100 wt.%.