US 2009/0156716 A1 · Halogen-free flame retarder composition and flame retardant polyamide composition

Abstract

The invention relates to a halogen-free, flame retarder composition for use in a thermoplastic composition, in particular a glassfibre-reinforced polyamide composition, which flame retarder composition contains at least 10-90 mass % phosphinate compound according to formula (I) and/or formula (II) and/or polymers thereof and 90-10 mass % polyphosphate salt of a 1,3,5-triazine compound according to formula (III) and 0-30 mass % olefin copolymer. When used as a flame retarder in glassfibre-reinforced compositions the halogen-free flame retardant composition results in a combination of a V-0 rating according to the UL 94 test of Underwriters Laboratories and excellent mechanical properties. The invention therefore also relates to the use of this flame retarder composition as a flame retarder in a polyamide composition, and a flame retardant polyamide composition that contains the flame retarder composition. The invention also relates to a moulded article containing the flame retardant polyamide composition, and the use thereof in the field of electrical and electronic applications.

Claims14

Dependent claims

Halogen-free, flame retarder composition for use in a thermoplastic composition, which flame retarder composition essentially consists of

a) 10-90 mass % phosphinate compound according to formula (I) and/or formula (II) and/or polymers thereof;
in which
R1, R2 is hydrogen, a linear or branched C1-C6 alkyl radical, or a phenyl radical;
R3 is a linear or branched C1-C10 alkylene, arylene, alkylarylene, or arylalkylene radical;
M is an alkaline earth metal or alkali metal, Al, Zn, Fe, or a 1,3,5-triazine compound;
m is 1, 2 or 3;
n is 1 or 3;
x is 1 or 2;
and
b) 90-10 mass % polyphosphate salt of a 1,3,5-triazine compound according to formula (III),
in which T represents a 1,3,5-triazine compound;
and
n is a measure of the number average degree of condensation and is higher than 3;
and
wherein the 1,3,5-triazine content is higher than 1.1 mol 1,3,5-triazine per mol of phosphorus atom and
c) 0-30 mass % olefin copolymer on the basis of at least one olefin with 2-12 carbon atoms and at least one compound containing acid, acid anhydride or epoxy groups;
the sum of components a)-c) being 100%.

14 more elements

Dependencies are inferred from the claim text.

Halogen-free flame retarder composition and flame retardant polyamide composition

Life of this patent

Halogen-free flame retarder composition and flame retardant polyamide composition

Life of this patent

Abstract

Claims14