Invention Grant
- Patent Title: Solvated mesophase pitches
- Patent Title (中): 溶剂化中间相沥青
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Application No.: US762711Application Date: 1991-09-19
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Publication No.: US5259947APublication Date: 1993-11-09
- Inventor: Walter M. Kalback , H. Ernest Romine , Xavier M. Bourrat
- Applicant: Walter M. Kalback , H. Ernest Romine , Xavier M. Bourrat
- Applicant Address: OK Ponca City
- Assignee: Conoco Inc.
- Current Assignee: Conoco Inc.
- Current Assignee Address: OK Ponca City
- Main IPC: C10C3/02
- 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.
Public/Granted literature
- US5763860A Gestational calculator Public/Granted day:1998-06-09
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