Patent number: 11859084
Abstract: The invention relates to a flame-retardant polyamide composition containing: as component A) 1 to 96 wt. % of one or more thermoplastic polyamides; as component B) 2 to 25 wt. % of a diorganylphosphinic acid salt of formula (I), wherein R1 and R2 are the same or different and C1-C18 alkyl is linear, branched or cyclical, 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; n is 1 to 4; as component C) 2 to 20 wt. % of at least a further polymer component, selected from the classes of thermoplastic polyester and polyester elastomers; as component D) 0 to 20 wt. % of a salt of the phosphorous acid of general 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 wt.
Type:
Grant
Filed:
October 9, 2018
Date of Patent:
January 2, 2024
Assignee:
CLARIANT INTERNATIONAL LTD
Inventors:
Sebastian Hörold, Elke Schlosser, Eva-Maria Leuschner