公开(公告)号：DE69529343D1

公开(公告)日：2003-02-13

申请号：DE69529343

申请日：1995-10-20

Applicant: CONOCO INC

Inventor： ROMINE ERNEST ,  SOUTHARD MARK ,  CAREL W ,  NANNI 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.

公开(公告)号：BR0111689A

公开(公告)日：2005-02-09

申请号：BR0111689

申请日：2001-06-07

Applicant: CONOCO INC

Inventor： ROMINE ERNEST ,  RODGERS JOHN A ,  NANNI EDWARD J ,  SOUTHARD W MARK

IPC: C10C3/02 ,  C10C3/00 ,  C10C3/08 ,  C10G9/00 ,  C10G21/00 ,  D01F9/145 ,  C08L95/00

Abstract: A solvating component for a solvated mesophase pitch. The solvated component includes a mixture of aromatic hydrocarbons having boiling points in the atmospheric equivalent boiling point range of about 285° to about 500° C. (about 550° F.-932° F.). At least 80% of the carbon atoms of the hydrocarbons are aromatic as characterized by carbon 13 NMR. The aromatic hydrocarbons are selected from a group consisting of aromatic compounds having 2 to 5 aromatic rings, substituted aromatic compounds having 2 to 5 aromatic rings wherein said substituents are alkyl groups having 1 to 3 carbons, hydroaromatic compounds having 2 to 5 rings, substituted aromatic compounds having 2 to 5 rings wherein said substituents are alkyl groups having 1 to 3 carbons, and mixtures thereof.

公开(公告)号：DE69529343T2

公开(公告)日：2003-09-18

申请号：DE69529343

申请日：1995-10-20

Applicant: CONOCO INC

Inventor： ROMINE ERNEST ,  SOUTHARD MARK ,  CAREL W ,  NANNI 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.