Title: Solvated mesophase pitch articles and process for preparation of the same
Application Number: 98116348 Application Date: 1998.07.18
Publication Number: 1222484 Publication Date: 1999.07.14
Approval Pub. Date: 2002.03.27 Granted Pub. Date: 2002.03.27
International Classifi-cation: C10C3/00;D01F9/155
Applicant(s) Name: Conoco Inc. Address:
Inventor(s) Name: Walter M. Kalback;H. Ernest Romine;Xavier M. Bourr
Attorney & Agent: wu dajian
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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