초록 ▼

There is disclosed pitch prepared from petroleum pitch, which is normally considered to be inferior to coal tar pitch, which petroleum pitch has properties to equal that of coal tar pitch. That is to say, that the softening points, the Conradson carbon, the toluene insolubles and the quinoline insol

There is disclosed pitch prepared from petroleum pitch, which is normally considered to be inferior to coal tar pitch, which petroleum pitch has properties to equal that of coal tar pitch. That is to say, that the softening points, the Conradson carbon, the toluene insolubles and the quinoline insolubles can be matched with those obtained from coal tar pitch. In addition the properties of the petroleum pitch can be varied to meet end user specifications.

대표청구항 ▼

A process for preparing a petroleum pitch for forming fibers consisting essentially of: (a) adding from about 0.01 to less than 1 weight percent carbon black to a liquid petroleum residual oil to inhibit the formation of mesophase to from 0.2% to 1.4% quinoline insolubles and to inhibit fouling and

A process for preparing a petroleum pitch for forming fibers consisting essentially of: (a) adding from about 0.01 to less than 1 weight percent carbon black to a liquid petroleum residual oil to inhibit the formation of mesophase to from 0.2% to 1.4% quinoline insolubles and to inhibit fouling and coking during conversion of the residual oil to pitch, (b) heating the residual oil containing carbon black at a temperature and pressure sufficient to crack and polymerize molecular weight species of the oil, and (c) cooling the heated liquid mass to form a precursor composition for forming fibers.