Propane-insoluble pitch

Claim 1

A PROPANE-INSOLUBLE PITCH HAVING A SPECIFIC GRAVITY, 77/77*F., OF ABOUT 1.0500 TO 1.1900, A MINIMUM VISCOSITY SUS AT 210*F. OF ABOUT 60, AND A MINIMUM NEEDLE PENETRATION AT 77* F., 100 GMS./5 SEC. OF ABOUT 20, PREPARED BY SOLVENT EXTRACTING A PETROLEUM BOTTOMS FEEDSTOCK PRODUCED FROM THE CATALYTIC CRACKING OF PETROLEUM GAS OIL, SAID FEEDSTOCK BOILING PRIMARILY IN THE RANGE OF ABOUT 400 TO 1000* F. AND HAVING A 5 VOLUME PERCENT DISTILLATION POINT OF AT LEAST ABOUT 500* F. AND A 95 VOLUME PERCENT DISTILLATON POINT OF AT LEAST ABOUT 800* F. WITH AT LEAST ABOUT 100* F. UNITS SEPARATING THE 5 VOLUME PERCENT DISTILLATION POINT AND 95 VOLUME PERCENT DISTILLATION POINT, SAID SOLVENT EXTRACTING BEING WITH A C3 TO C5 PARAFINIC SOLVENT AT A SOLVENT-TO-OIL RATIO OF AT LEAST ABOUT 2 TO 1 AND A TEMPERATURE OF ABOUT 130 TO 200* F. TO PROVIDE AN EXTRACT PHASE AND A RAFFINATE PHASE AND SEPARATING THE PHASES TO PROVIDE SAID PITCH.