公开(公告)号：US20240068132A1

公开(公告)日：2024-02-29

申请号：US18269882

申请日：2021-11-10

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Manesh Gopinadhan ,  Stuart E. Smith ,  Nicole M. Callen ,  Clarence E. Chase ,  Kazem V. Edmond ,  Srinivasan Rajagopalan ,  Eric B. Sirota ,  Daniel J. Ryan

IPC: D01F9/145 ,  C10C3/02

CPC classification number: D01F9/145 ,  C10C3/023

Abstract: Nucleation enhancement and/or growth rate improvement of mesophase in pitch compositions derived from hydrocarbon feedstocks can be achieved by: reacting in a reaction zone a blend comprising an isotropic feed and a seeding agent, to produce a reacted pitch having a mesophase content of about 10 vol % to 100 vol %, based on the total volume of the reacted pitch, and a softening point (Tsp) below 400° C.; wherein the seeding agent is about 50 wt % or less, based on the total weight of the blend; wherein the seeding agent has a mesophase content of about 0.01 vol % to 100 vol %, based on the total volume of the seeding agent.

公开(公告)号：US20230416949A1

公开(公告)日：2023-12-28

申请号：US18249492

申请日：2021-11-10

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： Stuart E. Smith ,  William M. Ferry ,  Kazem V. Edmond ,  Manesh Gopinadhan ,  Nicolas J. Alvarez ,  Heedong Yoon ,  Clarence E. Chase ,  Daniel J. Ryan

IPC: D01F9/145 ,  D01F9/32

CPC classification number: D01F9/145 ,  D10B2101/12 ,  D01F9/322

Abstract: Pitch compositions suitable for spinning may comprise: a pitch having a softening point (SP) below 400° C. and is capable of achieving a radial Hencky strain prior to break of about 0.7 to about 10, at spinning temperature (Ts) ranging from about SP−30° C. to about SP+80° C. Methods for producing a carbon fiber from a pitch composition at a temperature within a spinning temperature (Ts) range may comprise determining a temperature range wherein the maximum radial Hencky strain (εR) lies above a minimum process radial Hencky strain, and wherein the minimum process radial Hencky strain is within a range of about 0.7 to about 10. The spinning temperature (Ts) range may be determined by measuring a maximum radial Hencky strain (εR) prior to break at a series of different temperatures and strain rates. Carbon fiber composites may comprise of the said carbon fiber.