The isotropic pitch product, which contains {HEAD ~ mesogens} and soluble, aromatic organometallic compounds, as formed by heat soaking or mixing as taught above is subjected to solvent fractionation to produce, after fusion, a metals containing mesophase pitch suitable for spinning into carbon artifacts or {TAIL ~ fibers} 
The isotropic pitch product , which contains { HEAD ~ mesogens } and soluble , aromatic organometallic compounds , as formed by heat soaking or mixing as taught above is subjected to solvent fractionation to produce , after fusion , a metals containing mesophase pitch suitable for spinning into carbon artifacts or { TAIL ~ fibers }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL