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    PROCESS FOR THE PRODUCTION OF MESOPHASE PITCH
    12.
    发明专利
    PROCESS FOR THE PRODUCTION OF MESOPHASE PITCH 未知

    公开(公告)号：CA1334012C

    公开(公告)日：1995-01-17

    申请号：CA614810

    申请日：1989-09-29

    Applicant: CONOCO INC

    Inventor： KALBACK WALTER M

    IPC: C10C3/04 ,  C10C3/00 ,  C10C3/02 ,  C10C3/10 ,  D01F9/145 ,  D01F9/155

    Abstract: An improved process for producing an anisotropic pitch product suitable for carbon fiber manufacture. A carbonaceous feedstock substantially free of mesophase pitch is heated for a period of time at an elevated temperature while passing an oxidatively reactive sparging gas such as a mixture of oxygen and nitrogen through the feedstock. The oxidatively treated feedstock is then subjected to a heat soak, for a longer period of time in the absence of a sparging gas. Thereafter the heat soaked feedstock is heated at an elevated temperature in the presence of a non-oxidative sparging gas for a time period equal to or less than the heat soak to produce an anisotropic pitch having from 50 to 100% by volume mesophase which is suitable for producing good quality carbon fibers.

    13.
    发明专利
    未知

    公开(公告)号：NO932257D0

    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 ,  C10C3/02 ,  C10C3/08 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155 ,  C10C

    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.

    14.
    发明专利
    未知

    公开(公告)号：FI932772A0

    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: C10C3/00 ,  C10C3/08 ,  C10C3/02 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155 ,  C10C ,  D01F

    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.

    16.
    发明专利
    未知

    公开(公告)号：NO309612B1

    公开(公告)日：2001-02-26

    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 ,  C10C3/02 ,  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.

    17.
    发明专利
    未知

    公开(公告)号：DE68901908D1

    公开(公告)日：1992-07-30

    申请号：DE68901908

    申请日：1989-10-12

    Applicant: CONOCO INC

    Inventor： KALBACK WALTER M

    IPC: C10C3/04 ,  C10C3/00 ,  C10C3/02 ,  C10C3/10 ,  D01F9/145 ,  D01F9/155

    Abstract: A process for producing a mesophase pitch suitable for carbon fiber manufacture which comprises heating a carbonaceous feedstock substantially free of mesophase pitch in the presence of an oxidatively reactive sparging gas for a period of time, thereafter subjecting the carbonaceous feed to heat soaking in the absence of a sparging gas for an additional period of time and then heating the carbonaceous feed in the presence of a non-oxidative sparging gas for another period of time.

    SOLVATED MESOPHASE PITCHES
    18.
    发明专利
    SOLVATED MESOPHASE PITCHES 未知

    公开(公告)号：CA2095828A1

    公开(公告)日：1992-06-22

    申请号：CA2095828

    申请日：1991-12-05

    Applicant: CONOCO INC

    Inventor： KALBACK WALTER M ,  ROMINE HUGH E ,  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.

    19.
    发明专利
    未知

    公开(公告)号：MX9102728A

    公开(公告)日：1992-06-01

    申请号：MX9102728

    申请日：1991-12-20

    Applicant: CONOCO INC

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

    IPC: C10C3/00 ,  C10C3/02 ,  C10C3/08 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155 ,  C08J11/04

    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.

    20.
    发明专利
    未知

    公开(公告)号：DK0563225T3

    公开(公告)日：2002-06-10

    申请号：DK92902245

    申请日：1991-12-05

    Applicant: CONOCO INC

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

    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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