: SOLVATED MESOPHASE PITCHES
Application 421/KOL/2004 published 2006-11-17, filed 2004-07-16
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. (FIG.NIL)
Applicant
CONOCO INC.
1000 SOUTH PINE PONCA CITY, OKLAHOMA 74603, USA
Inventor
WALTER M. KALBACK H. ERNEST ROMINE XAVIER M. BOURRAT
International Info
Classification: C01C 1/18
Priority Information
07/632,259 USA 1990-12-21
07/762,711 USA 1991-09-19