SOLVATED MESOPHASE PITCHES
    21.
    发明专利

    公开(公告)号:AU9126291A

    公开(公告)日:1992-07-22

    申请号:AU9126291

    申请日:1991-12-05

    Applicant: CONOCO INC

    Abstract: This invention relates to low melting solvated mesophase pitches which are suitable for spinning into carbon fibers. The solvated mesophase pitches have a lower melting point than conventional mesophase pitch but remain substantially anisotropic. The solvated mesophase can be produced as an intermediate during solvent fractionation or supercritical solvent fractionation of mesogen-containing isotropic pitches. The process is enhanced through the ability to recover pseudomesogens with an increased average molecular weight which, in combination with the solvent content, provides a fusible mesophase capable of being spun directly into infusible oriented anisotropic carbon fibers.

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