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    Method of producing a precursor pitch for carbon fiber
    1.
    发明授权
    Method of producing a precursor pitch for carbon fiber 失效
    生产碳纤维前体沥青的方法

    公开(公告)号：US4589975A

    公开(公告)日：1986-05-20

    申请号：US686651

    申请日：1984-12-27

    申请人： Kozo Yudate ,  Yukihiro Ohsugi ,  Mamoru Kamishita ,  Ken Nagasawa

    发明人： Kozo Yudate ,  Yukihiro Ohsugi ,  Mamoru Kamishita ,  Ken Nagasawa

    IPC分类号： C10C3/04 ,  C10C1/00 ,  D01F9/15 ,  C10C3/00 ,  C10C3/02 ,  D01F9/12

    CPC分类号： C10C1/00

    摘要： A method of producing a precursor pitch for use in the production of carbon fibers, which comprises hydrogenating a soft or middle tar pitch to obtain a hydrogenated pitch containing no free carbon and high molecular weight components and then subjecting it to a heat treatment. In this method, the hydrogenation is carried out in the presence of tetralin at a temperature of 400.degree.-450.degree. C., and the heat treatment after the removal of solvent insoluble components and solvent is carried out in an inert gas atmosphere at a temperature of 450.degree.-500.degree. C. and under a reduced pressure of 0.1-10 Torr.

    摘要翻译： 一种生产用于生产碳纤维的前体沥青的方法，其包括将软或中焦油沥青加氢以获得不含游离碳和高分子量组分的氢化沥青，然后进行热处理。 在该方法中，在四氢化萘存在下，在400〜-450℃的温度下进行氢化，除去溶剂不溶性成分和溶剂后的热处理在惰性气体气氛中，在温度 450℃-500℃，减压0.1-10托。

    Method for producing a precursor pitch for carbon fiber
    2.
    发明授权
    Method for producing a precursor pitch for carbon fiber 失效
    碳纤维前体沥青的制造方法

    公开(公告)号：US4578177A

    公开(公告)日：1986-03-25

    申请号：US645175

    申请日：1984-08-28

    申请人： Kozo Yudate ,  Ken Nagasawa

    发明人： Kozo Yudate ,  Ken Nagasawa

    IPC分类号： C10C1/18 ,  C10C1/19 ,  D01F9/15 ,  C10C3/02 ,  C10C3/08 ,  D01F9/14

    CPC分类号： D01F9/15 ,  C10C1/18 ,  C10C1/19

    摘要： A precursor pitch suitable for production of carbon fiber which is excellent in thermal stability, spinnability, infusibility and is few in impurities, is produced by heating a coal tar pitch at a temperature of 350.degree.-500.degree. C. to form mesophase and extracting the thus heated pitch with a tar series light oil to obtain the precursor pitch.

    摘要翻译： 通过在350〜-500℃的温度下加热煤焦油沥青来制造适用于制造热稳定性，纺丝性，熔融性好，杂质少的碳纤维的前体沥青，形成中间相并提取 因此用焦油系列轻油加热沥青以获得前体沥青。

    Method for producing a precursor pitch for carbon fiber
    3.
    发明授权
    Method for producing a precursor pitch for carbon fiber 失效
    碳纤维前体沥青的制造方法

    公开(公告)号：US4575412A

    公开(公告)日：1986-03-11

    申请号：US645174

    申请日：1984-08-28

    申请人： Kozo Yudate ,  Ken Nagasawa

    发明人： Kozo Yudate ,  Ken Nagasawa

    IPC分类号： C10C1/18 ,  C10C1/19 ,  C10C3/02 ,  C10C3/08 ,  D01F9/14

    CPC分类号： C10C1/19 ,  C10C1/18

    摘要： Precursor pitch to be used for formation of carbon fiber is produced by heating a coal tar soft or middle pitch at a temperature of 350.degree.-500.degree. C. at a first stage to form mesophase, extracting the thus treated pitch with a solvent, separating and removing the solvent insoluble portion including mesophase to obtain a pitch containing no free carbon and further at the second stage heat-treating the pitch containing no free carbon in an inert gas atmosphere under atmospheric pressure or a reduced pressure under the following condition600-1.2 T.ltoreq..theta..ltoreq.1,800-3.6 T(provided that 350.ltoreq.T.ltoreq.500)wherein T(.degree.C.) is the temperature of the heat treatment and .theta. (min) is the time for which said temperature is held, to form bulk mesophase pitch containing 20-60% by weight of quinoline insoluble portion.

    摘要翻译： 用于形成碳纤维的前体沥青通过在第一阶段在350-500℃的温度下加热煤焦油软木或中间沥青来制备，以形成中间相，用溶剂萃取如此处理的沥青，分离 除去包含中间相的溶剂不溶部分以获得不含游离碳的沥青，并且在第二阶段，在惰性气体气氛中，在大气压或减压下，在以下条件600-1.2下，对不含游离碳的沥青进行热处理 T（℃）为热处理温度，θ（min）为所述时间， 保持温度，形成含有20〜60重量％喹啉不溶部分的体中间相沥青。