Mg-Al-based hydrotalcite-type particles, chlorine-containing...

Details Mg-Al-based hydrotalcite-type particles, chlorine-containing... Mg-Al-based hydrotalcite-type particles, chlorine-containing...

2008-07-29

2008-07-29

Lee, Rip A. (Department: 1796)

Electricity: conductors and insulators

Conduits, cables or conductors

Insulated

C524S436000, C524S437000, C524S567000, C524S569000, C174S11000P

Reexamination Certificate

active

07405359

ABSTRACT:
A chlorine-containing resin composition for covering an electric wire of the present invention, has a heat stability of not less than 240 minutes and a volume resistivity of 5.0×1013to 1.0×1016Ω·cm when measured according to JIS K6723, and comprises:100 parts by weight of a chlorine-containing resin, and1.5 to 10 parts by weight of Mg—Al-based hydrotalcite-type particles having a composition represented by the formula:in-line-formulae description="In-line Formulae" end="lead"?[MgxCay].Alz.(OH)2.An−p.mH2Oin-line-formulae description="In-line Formulae" end="tail"? 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)
; 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 having a heat-resisting time of not less than 4 hours upon a chlorine-containing resin composition containing the Mg—Al-based hydrotalcite-type particles.

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