公开(公告)号：US5259947A

公开(公告)日：1993-11-09

申请号：US762711

申请日：1991-09-19

Applicant: Walter M. Kalback ,  H. Ernest Romine ,  Xavier M. Bourrat

Inventor： Walter M. Kalback ,  H. Ernest Romine ,  Xavier M. Bourrat

IPC: C10C3/02 ,  C10C3/00 ,  C10C3/08 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155

CPC classification number: D01F9/145 ,  C10C3/00

Abstract: This invention relates to low melting solvated mesophase pitches which are suitable for spinning into carbon fibers. The solvated mesophase pitches have a lower melting point than conventional mesophase pitch but remain substantially anisotropic. The solvated mesophase can be produced as an intermediate during solvent fractionation or supercritical solvent fractionation of mesogen-containing isotropic pitches. The process is enhanced through the ability to recover pseudomesogens with an increased average molecular weight which, in combination with the solvent content, provides a fusible mesophase capable of being spun directly into infusible oriented anisotropic carbon fibers.

Abstract translation: 本发明涉及适于纺丝成碳纤维的低熔点溶剂化中间相沥青。 溶剂中间相沥青具有比常规中间相沥青更低的熔点，但保持基本上各向异性。 溶剂中间相可以在溶剂分馏或含有介晶的各向同性沥青的超临界溶剂分馏中产生中间体。 该方法通过增加平均分子量来回收假单胞菌的能力得到增强，其与溶剂含量的组合提供了可以直接旋入可熔取向的各向异性碳纤维的易熔中间相。

公开(公告)号：US5538621A

公开(公告)日：1996-07-23

申请号：US282103

申请日：1994-07-28

Applicant: Walter M. Kalback ,  H. Ernest Romine ,  Xavier M. Bourrat

Inventor： Walter M. Kalback ,  H. Ernest Romine ,  Xavier M. Bourrat

IPC: C10C3/02 ,  C10C3/00 ,  C10C3/08 ,  D01F9/145 ,  D01F9/15 ,  D01F9/155

CPC classification number: D01F9/145 ,  C10C3/00

Abstract: This invention relates to low melting solvated mesophase pitches which are suitable for spinning into carbon fibers. The solvated mesophase pitches have a lower melting point than conventional mesophase pitch but remain substantially anisotropic. The solvated mesophase can be produced as an intermediate during solvent fractionation or supercritical solvent fractionation of mesogen-containing isotropic pitches. The process is enhanced through the ability to recover pseudomesogens with an increased average molecular weight which, in combination with the solvent content, provides a fusible mesophase capable of being spun directly into infusible oriented anisotropic carbon fibers.

Abstract translation: 本发明涉及适于纺丝成碳纤维的低熔点溶剂化中间相沥青。 溶剂中间相沥青具有比常规中间相沥青更低的熔点，但保持基本上各向异性。 溶剂中间相可以在溶剂分馏或含有介晶的各向同性沥青的超临界溶剂分馏中产生中间体。 该方法通过增加平均分子量来回收假单胞菌的能力得到增强，其与溶剂含量的组合提供了可以直接旋入可熔取向的各向异性碳纤维的易熔中间相。