Carbon material and process for producing the same
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United States of America Patent
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Issued Date -
Apr 13, 2006
app pub date -
Jan 11, 2005
filing date -
Jan 14, 2004
priority date (Note) -
Abandoned
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Abstract
There are provided a novel carbon material having a characteristic property of a high volume electrical resistance, which is different from conventional carbon black. A carbon material of the present invention is insoluble in organic solvents, and has a peak height ratio H(B)/H(A) and a peak strength ratio I(D)/I(G) which are fall within the region defined by four points: (X, Y)=(0.86, 0.71), (0.65, 0.86), (0.28, 0.59) and (0.23, 0.63) in the coordinate system shown in FIG. 1 where the peak height ratio H(B)/H(A) is plotted as the X-axis and the peak strength ratio I(D)/I(G) as the Y-axis, wherein H(A) represents a height of the strongest peak at the diffraction angle 2 .theta. of 12-16.degree. and H(B) represents a height of the peak at 2 .theta.=22.degree. in the X-ray diffractometry using CuK.alpha.-rays, and I(G) represents a peak strength in the band of G1590.+-.20 cm.sup.-1 and I(D) represents a peak strength in the band D1340.+-.40 cm.sup.-1 in the Raman spectrometry at the excitation wavelength of 5145 .ANG..
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