Patent ID: 7405359

Claim:
An electric wire covered with a chlorine-containing resin composition having a heat stability of not less than 240 minutes and a volume resistivity of 5.0×10 13 to 1.0×10 16 Ω·cm when measured according to JIS K6723, and comprising: 100 parts by weight of a chlorine-containing resin, and 1.5 to 10 parts by weight of Mg—Al-based hydrotalcite particles having a composition represented by the formula: [Mg x Ca y ].Al z .(OH) 2 .A n− p .mH 2 O wherein 0.2≦z/(x+z)≦0.6; 0.01≦y/(x+z)≦0.20; x+y+z=1; p=(2(x+y−1)+3z)/n; A is a n-valent anion; and m is more than 0 and not more than 0.75, having a plate surface diameter of 0.1 to 1.0 μm and a thickness of 0.02 to 0.08 μm, and containing calcium at a molar ratio of Ca to a sum of Mg and Al of 0.01:1 to 0.20:1, and showing a heat-resisting time of not less than 4 hours.