A composition contains at least a copolyamide (PA-1) as a component (I), produced by polymerization of at least one lactam and of a monomer mixture (M) which contains at least a C.sub.32-C.sub.40 dimer acid and at least a C.sub.4-C.sub.12 diamine; and a flame retardant (F1) as a component (II). The flame retardant (F1) is selected from melamine cyanurates, magnesium hydroxide, and phosphorus-containing flame retardants. A process can be used for preparing such compositions, and the composition can be used for producing shaped articles.

A composition contains at least a copolyamide (PA-1) as a component (I), produced by polymerization of at least one lactam and of a monomer mixture (M) which contains at least a C.sub.32-C.sub.40 dimer acid and at least a C.sub.4-C.sub.12 diamine; and a flame retardant (F1) as a component (II). The flame retardant (F1) is selected from melamine cyanurates, magnesium hydroxide, and phosphorus-containing flame retardants. A process can be used for preparing such compositions, and the composition can be used for producing shaped articles.

The present invention relates to a poly(arylene ether) resin composition and a cable coated with the same. More particularly, the present invention relates to a poly(arylene ether) resin composition, including 20 to 40% by weight of a poly(arylene ether) resin, 15 to 35% by weight of a low-molecular weight styrene-based block copolymer having a weight-average molecular weight of 90,000 g/mol or less, 10 to 30% by weight of a high-molecular weight styrene-based block copolymer having a weight-average molecular weight of 95,000 g/mol or more, 1 to 20% by weight of a flame retardant, and 0 to 20% by weight of an additive.

In accordance with the present invention, a poly(arylene ether) resin composition having superior flame retardancy, tensile strength, flexibility, extrusion processability, elongation, and appearance characteristics and a cable coated with the same are provided.

The present invention relates to a poly(arylene ether) resin composition and a cable coated with the same. More particularly, the present invention relates to a poly(arylene ether) resin composition, including 20 to 40% by weight of a poly(arylene ether) resin, 15 to 35% by weight of a low-molecular weight styrene-based block copolymer having a weight-average molecular weight of 90,000 g/mol or less, 10 to 30% by weight of a high-molecular weight styrene-based block copolymer having a weight-average molecular weight of 95,000 g/mol or more, 1 to 20% by weight of a flame retardant, and 0 to 20% by weight of an additive.

In accordance with the present invention, a poly(arylene ether) resin composition having superior flame retardancy, tensile strength, flexibility, extrusion processability, elongation, and appearance characteristics and a cable coated with the same are provided.

The invention relates to a preparation process of a flame retardant composition made from brominated bismuth and/or antimony compounds complexed with melamine, in which melamine, at least one between the bismuth carbonate and antimony sesquioxide, hydrobromic acid in aqueous solution are placed in contact with each other so as to trigger chemical reactions which lead to the formation of a complex of brominated bismuth or brominated antimony with melamine and melamine bromohydrate. The reagents are placed in contact in the presence of at least one reaction carrier defined by at least one compound chosen from the group consisting of melamine, melamine phosphate, melamine polyphosphate, ammonium phosphate, ammonium polyphosphate, triphenyl-phosphate, graphite, silica, lignin, coke and compounds containing triazine rings condensed or linked by —NH groups. The reaction carrier is not involved in the reactions. There are no polymeric compounds in quantities such as to create a polymer matrix. The reagents being introduced into the reactor in an amount defined by the stoichiometric ratios of said reactions. The reaction carrier is introduced into the reactor in an amount defined with respect to the total weight of the reagents so that it can perform a modulator function.

Certain phosphonic acid salts heated at temperatures over 200° C. generate thermally stable, highly efficient flame retardant materials well suited for use as flame retardant additives in polymers. The flame retardants of the invention can be used as the sole flame retardant in a composition or in combination with other flame retardants, synergists or adjuvants.

Thermoplastic, flame-retarded plastic molding compounds with improved mechanical properties, in particular for LDS applications, are described. The thermoplastic molding compound consists of: (A) 21-81.9 wt. % thermoplastic material, consisting of (A1) 55-100 wt. % polyamide, containing at least 50 wt. % partly aromatic, partly crystalline polyamide; (A2) 0-45 wt. % non-polyamide based thermoplastic material, wherein (A1) and (A2) add up to 100 wt. % component (A); (B) 10-70 wt. % glass fibers; (C) 0.1-10 wt. % LDS additive or a mixture of LDS additives; (D) 8-18 wt. % halogen-free flame retardant; (E) 0-40 wt. % particulate filler, different from (C); (F) 0-2 wt. % other further additives;
wherein the sum of (A)-(F) makes up 100 wt. %.

Thermoplastic, flame-retarded plastic molding compounds with improved mechanical properties, in particular for LDS applications, are described. The thermoplastic molding compound consists of: (A) 21-81.9 wt. % thermoplastic material, consisting of (A1) 55-100 wt. % polyamide, containing at least 50 wt. % partly aromatic, partly crystalline polyamide; (A2) 0-45 wt. % non-polyamide based thermoplastic material, wherein (A1) and (A2) add up to 100 wt. % component (A); (B) 10-70 wt. % glass fibers; (C) 0.1-10 wt. % LDS additive or a mixture of LDS additives; (D) 8-18 wt. % halogen-free flame retardant; (E) 0-40 wt. % particulate filler, different from (C); (F) 0-2 wt. % other further additives;
wherein the sum of (A)-(F) makes up 100 wt. %.

Flame retardants produced by heating certain phosphonic acid salts at temperatures over 200° C. are readily compounded into high temperature polyamides that are processed at temperatures above 270° C. to provide flame retardant, high temperature polyamide compositions.

Flame retardants produced by heating certain phosphonic acid salts at temperatures over 200° C. are readily compounded into high temperature polyamides that are processed at temperatures above 270° C. to provide flame retardant, high temperature polyamide compositions.