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公开(公告)号：CA2238024A1
公开(公告)日：1997-06-12
申请号：CA2238024
申请日：1995-12-06
Applicant: CONOCO INC
Inventor： SOUTHARD W MARK , ROMINE H ERNEST , NANNI EDWARD J , CAREL MARK W
Abstract: This invention provides a process for preparing a solvated isotropic pitch having a fluid temperature at least 40 ~C lower than the same pitch in the nonsolvated state. Additionally, the present invention provides a solvated isotropic pitch which may be formed into carbon artifacts which do not require oxidative stabilization prior to carbonization.
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公开(公告)号：NO972085L
公开(公告)日：1997-05-06
申请号：NO972085
申请日：1997-05-06
Applicant: CONOCO INC
Inventor： ROMINE H ERNEST , SOUTHARD W MARK , CAREL MARK W
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.
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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
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.
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