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    PROCESS FOR ISOLATING MESOPHASE PITCH
    51.
    发明专利
    PROCESS FOR ISOLATING MESOPHASE PITCH 未知

    公开(公告)号：CA2202525A1

    公开(公告)日：1996-05-17

    申请号：CA2202525

    申请日：1995-10-20

    Applicant: CONOCO INC

    Inventor： ROMINE H ERNEST ,  SOUTHARD W MARK ,  CAREL MARK W ,  NANNI EDWARD J

    IPC: C10C1/18 ,  C10C3/00 ,  C10C3/08 ,  C10G53/06 ,  C10C3/06

    Abstract: The present invention provides a process for obtaining a very clean mesophase pitch from isotropic pitch. This invention utilizes a solvent fractionation process which does not involve the process steps, yield loss and waste generation associated with fluxing and filtering the isotropic pitch. Additionally, this invention provides a liquid/liquid extraction process that avoids the solids handling and the high temperatures and pressures of supercritical fluid extraction. Finally, this invention controls the hardness of the mesophase product.

    52.
    发明专利
    未知

    公开(公告)号：NO932257L

    公开(公告)日：1993-06-18

    申请号：NO932257

    申请日：1993-06-18

    Applicant: CONOCO INC

    Inventor： KALBACK WALTER M ,  ROMINE H ERNEST ,  BOURRAT XAVIER M

    IPC: C10C3/00 ,  C10C3/08 ,  C10C3/02 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155

    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.

    53.
    发明专利
    未知

    公开(公告)号：FI932772A

    公开(公告)日：1993-06-16

    申请号：FI932772

    申请日：1993-06-16

    Applicant: CONOCO INC

    Inventor： KALBACK WALTER M ,  ROMINE H ERNEST ,  BOURRAT XAVIER M

    IPC: C10C3/02 ,  C10C3/00 ,  C10C3/08 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155

    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.

    55.
    发明专利
    未知

    公开(公告)号：ES2185718T3

    公开(公告)日：2003-05-01

    申请号：ES95936316

    申请日：1995-10-20

    Applicant: CONOCO INC

    Inventor： ROMINE H ERNEST ,  SOUTHARD W MARK ,  CAREL MARK W ,  NANNI EDWARD J

    IPC: C10C1/18 ,  C10C3/00 ,  C10C3/08 ,  C10G53/06 ,  C10G27/00 ,  D01F9/145

    Abstract: The present invention provides a process for obtaining a very clean mesophase pitch from isotropic pitch. This invention utilizes a solvent fractionation process which does not involve the process steps, yield loss and waste generation associated with fluxing and filtering the isotropic pitch. Additionally, this invention provides a liquid/liquid extraction process that avoids the solids handling and the high temperatures and pressures of supercritical fluid extraction. Finally, this invention controls the hardness of the mesophase product.

    57.
    发明专利
    未知

    公开(公告)号：DE69132940D1

    公开(公告)日：2002-04-04

    申请号：DE69132940

    申请日：1991-12-05

    Applicant: CONOCO INC

    Inventor： KALBACK M ,  ROMINE H ERNEST ,  BOURRAT M

    IPC: C10C3/02 ,  C10C3/00 ,  C10C3/08 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155

    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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