公开(公告)号：US6123829A

公开(公告)日：2000-09-26

申请号：US52764

申请日：1998-03-31

Applicant: Andrea K. Zimmerman ,  John A. Rodgers ,  H. Ernest Romine ,  James R. McConaghy ,  Lorita Davis

Inventor： Andrea K. Zimmerman ,  John A. Rodgers ,  H. Ernest Romine ,  James R. McConaghy ,  Lorita Davis

IPC: C10C3/00 ,  D01F9/145 ,  C10C1/20 ,  D01F9/12

CPC classification number: C10C3/00 ,  D01F9/145

Abstract: The present invention provides a process for thermosetting pitch fibers in reduced times, at low concentrations of oxygen and at higher temperatures than previously possible. Additionally, the present invention provides a pitch fiber which has an oxygen diffusion rate to the center of the fiber which is competitive with the rate of oxidation at the fiber's surface. Further, the present invention provides a high density pitch fiber batt which thermosets without loss of fiber structure.

公开(公告)号：US5489374A

公开(公告)日：1996-02-06

申请号：US334647

申请日：1994-11-07

Applicant: H. Ernest Romine ,  W. Mark Southard ,  Edward J. Nanni ,  Mark W. Carel

Inventor： H. Ernest Romine ,  W. Mark Southard ,  Edward J. Nanni ,  Mark W. Carel

IPC: C10C1/18 ,  C10C3/00 ,  C10C3/08 ,  C10G53/06 ,  C10G27/00

CPC classification number: C10G53/06 ,  C10C3/002 ,  C10C3/08

Abstract: The present invention provides a process for obtaining a very clean mesophase pitch from isotropic pitch. This invention utilizes a solvent fractionation process which does not involve the process steps, yield loss and waste generation associated with fluxing and filtering the isotropic pitch. Additionally, this invention provides a liquid/liquid extraction process that avoids the solids handling and the high temperatures and pressures of supercritical fluid extraction. Finally, this invention controls the hardness of the mesophase product.

Abstract translation: 本发明提供了从各向同性沥青获得非常干净的中间相沥青的方法。 本发明利用不涉及工艺步骤的溶剂分馏方法，与助熔和过滤各向同性沥青相关的产量损失和废物产生。 此外，本发明提供了一种避免固体处理和超临界流体萃取的高温和高压的液/液萃取方法。 最后，本发明控制中间相产物的硬度。

公开(公告)号：US5437780A

公开(公告)日：1995-08-01

申请号：US135204

申请日：1993-10-12

Applicant: W. Mark Southard ,  H. Ernest Romine ,  Edward J. Nanni ,  Mark W. Carel

Inventor： W. Mark Southard ,  H. Ernest Romine ,  Edward J. Nanni ,  Mark W. Carel

IPC: C10C3/02 ,  C01C3/02

CPC classification number: C10C3/026

Abstract: This invention relates to a process for producing mesophase pitch in high yields. The process of the invention comprises isolating a heavy fraction of a heat soaked pitch by a solvent extraction, heat soaking the isolated heavy fraction to increase the size and number of larger heavy aromatics, and isolating the larger heavy aromatics by solvent extraction to obtain a larger heavy aromatic solvated mesophase pitch.

Abstract translation: 本发明涉及以高产率生产中间相沥青的方法。 本发明的方法包括通过溶剂萃取分离重馏分的热浸沥青，热分离重质馏分以增加较大的重芳烃的大小和数量，并通过溶剂萃取分离较大的重芳烃以获得更大的重质馏分 重芳烃溶剂中间相沥青。