| US 7,405,359 B2 | ||
| Mg-Al-based hydrotalcite-type particles, chlorine-containing resin composition and process for producing the particles | ||
| Naoya Kobayashi, Hiroshima (Japan); Torayuki Honmyo, Otake (Japan); Tsutomu Katamoto, Hatsukaichi (Japan); and Akinori Yamamoto, Hatsukaichi (Japan) | ||
| Assigned to Toda Kogyo Corporation, Hiroshima-ken (Japan) | ||
| Filed on Jul. 26, 2005, as Appl. No. 11/188,783. | ||
| Application 11/188783 is a division of application No. 10/976873, filed on Nov. 01, 2004, granted, now 6,939,909. | ||
| Application 10/976873 is a division of application No. 10/302837, filed on Nov. 25, 2002, granted, now 6,919,396. | ||
| Application 10/302837 is a division of application No. 09/495309, filed on Feb. 01, 2000, granted, now 6,509,405. | ||
| Claims priority of application No. 11-28998 (JP), filed on Feb. 05, 1999. | ||
| Prior Publication US 2005/0282947 A1, Dec. 22, 2005 | ||
| Int. Cl. H01B 3/44 (2006.01); C08K 3/22 (2006.01); C08L 27/06 (2006.01) | ||
| U.S. Cl. 174—110SR [524/436; 524/437; 524/567; 524/569; 174/110 V] | 4 Claims |
| 1. 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 5.0×1013 to 1.0×1016 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:
[MgxCay].Alz.(OH)2.An−p.mH2O
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.
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