2 results about "Isotropic pitch" patented technology

Methods, systems, and compositions involving forming isotropic pitch by reacting an aromatic hydrocarbon feed and a linker in the presence of a catalyst, and forming mesophase pitch by heating the isotropic pitch.

A method for preparing mesophase bitumen is described. The method typically includes providing feedstocks of T5 having a temperature ≥400°F (204°C) and T95 having a temperature ≤1,400°F (760°C), and heating the feedstocks at a temperature ranging from about 420°C to about 520°C to prepare a heat-treated product comprising isotropic bitumen. Typically, the heating is carried out under conditions sufficient to satisfy the relationship [X*Y] ≥ 20,000 seconds, where X is the equivalent reaction time of the heating, and Y is the bromine value of the feedstock as measured according to ASTM D1159. The method typically further includes mixing the isotropic bitumen with a mixture solubility value (S... BN The solvent of at least about 10 SU is contacted under conditions sufficient to prepare a solvent fraction containing the solvent and an insoluble fraction containing the mesophase pitch; and the mesophase pitch is recovered.