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    • 4. 发明授权
    • Optically anisotropic carbonaceous pitch
    • 光学各向异性碳质沥青
    • US4655902A
    • 1987-04-07
    • US772069
    • 1985-09-03
    • Takayuki IzumiTsutomu NaitoMasuo ShinyaTomio Nomura
    • Takayuki IzumiTsutomu NaitoMasuo ShinyaTomio Nomura
    • C10C3/00D01F9/155C01C3/00D01F9/12D01F9/20
    • C10C3/002D01F9/155
    • In a process for producing an optically anisotropic carbonaceous pitch having a low softening point for the production of carbon material starting oil to be used is a tar-like substance which is a mixture of compounds not substantially containing chloroform insolubles but containing components having a boiling point of 540.degree. C. or more as principal components and consisting principally of carbon and hydrogen. The tar-like substance has a content of n-heptane insolubles of up to 1 wt % and contains an aromatic oil fraction and a resin fraction as the principal components of n-heptane soluble components. The aromatic carbon fraction, fa, is at least 0.7, the number-average molecular weight is up to 1,000 and the maximum molecular weight is up to 2,000 for each of the aromatic oil and resin fractions.
    • 在用于生产碳原料起始油的软化点的光学各向异性碳质沥青的制造方法中,作为不含氯仿不溶物但含有沸点成分的化合物的混合物的焦油状物质 540℃以上为主要成分,主要由碳和氢组成。 焦油状物质含有高达1重量%的正庚烷不溶物,含有芳香油馏分和作为正庚烷可溶成分的主要成分的树脂部分。 芳族碳分数fa至少为0.7,数均分子量高达1,000,并且对于每种芳族油和树脂级分,最大分子量达2,000。