Flexible flame retardant insulated wires for use in electronic equipment

An insulated wire for use in electronic equipment, comprising an electrical conductive core and an insulating layer and/or an insulating jacket consisting of a flame retardant polymer composition surrounding the electrically conductive core, wherein the flame retardant elastomeric composition, expressed as % wt relative to the weight of the total flame retardant elastomeric composition, consists essentially of:

• (A) 10 wt % to 70 wt % styrenic block copolymer,
• (B) 3 wt % to 35 wt % of a metal salt of a phosphinic acid of the formula [R1R2P(O)O]−mMm+ (formula I) and/or a diphosphinic acid of the formula [O(O)PR1—R3—PR2(O)O]2−nMxm+ (formula II), and/or a polymer thereof, wherein
• R1 and R2 are equal or different substituents chosen from the group consisting of hydrogen, linear, branched and cyclic C1-C6 aliphatic groups, and aromatic groups,
• R3 is chosen from the group consisting of linear, branched and cyclic C1-C10 aliphatic groups and C6-C10 aromatic and aliphatic-aromatic groups,
• M is a metal chosen from the group consisting of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, and K, and
• m, n and x are equal or different integers in the range of 1-4, and
• (C) 10 wt % to 65 wt % copolyetherester elastomer;
• and optionally,
• (D) 0 wt. % to 15 wt. % PP and/or LLDPE,
• (E) 0 wt. % to 15 wt % of a flame retardant component consisting of a nitrogen containing flame retardant synergist and/or a phosphor/nitrogen containing flame retardant,
• (F) 0 wt. % to 5 wt. % of an inorganic compound chosen from the group consisting of basic and amphoteric oxides, hydroxides, carbonates, silicates, borates, stannates, mixed oxide-hydroxides, oxide-hydroxide-carbonates, hydroxide-silicates and hydroxide-borates, and mixtures thereof;
• and
• (G) 0 wt % to 10 wt % of additives, and wherein
• the insulated wire is a bipolar or tripolar wire consisting of two or three electrically conductive cores, two or three insulating layers each surrounding one of the electrically conductive cores, and optionally a jacket layer surrounding the electrically conductive cores and the insulating layers, wherein the insulating layers and/or the jacket layer consist of the flame retardant elastomeric composition.