公开(公告)号：US20240209208A1

公开(公告)日：2024-06-27

申请号：US18279805

申请日：2021-11-10

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Ozcan Altintas ,  Justin P. Romaire ,  Jihad M. Dakka ,  Renyuan Yu ,  Anthony S. Mennito ,  Brandon M. Carcuffe ,  Teng Xu

IPC: C08L95/00

CPC classification number: C08L95/00 ,  C08L2555/74

Abstract: Isotropic pitch compositions may be obtained by reacting an aromatic feedstock comprising one or more aromatic classes with formaldehyde or paraformaldehyde under acidic conditions. Isotropic pitch compositions may comprise: at least two monomers linked with at least one methylene bridge between each one of the at least two monomers, wherein each one of the at least monomers comprises one or more aromatic classes comprising one or more 5-membered rings, 6-membered rings, and any combination thereof; and wherein the isotropic pitch composition has a weight average molecular weight (Mw) of about 300 g/mol to about 1,500 g/mol, a softening point (Tsp) of 90° C. or greater, and a micro carbon residue (MCR) of about 18 wt % or greater, based on the total weight of the isotropic pitch composition.

公开(公告)号：US20230374214A1

公开(公告)日：2023-11-23

申请号：US18030030

申请日：2021-10-07

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Ozcan Altintas ,  Justin P. Romaire ,  Abhimanyu O. Patil ,  August W. Bosse

IPC: C08G69/00

CPC classification number: C08G69/00

Abstract: Processes and systems for producing isomeric mixtures of aromatic amine monomers from aromatic feeds. An example process for producing isomeric mixtures of aromatic amine monomers from aromatic feeds may include nitrating at least a portion of an aromatic feed to produce a mixture of nitrated aromatic compounds. The example process may further include hydrogenating at least a portion of the nitrated aromatic compounds to produce an isomeric mixture of aromatic amine monomers. The example process may further include processing the isomeric mixture of aromatic amine monomers to form a product selected from an aromatic compound with a different functional group than the aromatic amine monomers, a polymerized product, or a reaction product of the aromatic amine monomers and H2S.