公开(公告)号：US20170362742A1

公开(公告)日：2017-12-21

申请号：US15315220

申请日：2016-02-15

Applicant: CYTEC INDUSTRIES INC.

Inventor： John Desmond COOK ,  Thomas TAYLOR ,  Girish Vishnukant DESHPANDE ,  Longgui TANG ,  Barry DeWayne MEECE ,  Suzanne CRAWFORD ,  Shao C. CHIU ,  Billy D. Harmon ,  Alan THOMAS

IPC: D01D5/06 ,  D01F9/22 ,  B29C47/00 ,  D01F6/18 ,  B29L31/00 ,  B29K33/20 ,  D01F6/38

CPC classification number: D01D5/06 ,  B29C48/022 ,  B29C48/05 ,  B29K2033/20 ,  B29L2031/731 ,  D01F6/18 ,  D01F6/38 ,  D01F9/12 ,  D01F9/22 ,  D01F9/225

Abstract: The present disclosure relates generally to carbon fibers having high tensile strength and modulus of elasticity, as well as a process for the manufacture of such carbon fiber. The process comprises spinning a polymer/solvent solution into a solvent/water bath in the range of 78%-85% solvent, thereby producing a dense fiber structure, and subsequently carbonizing the polymer precursor fiber at a lower than typical carbonization temperature to form carbon fibers.

公开(公告)号：US20190153211A1

公开(公告)日：2019-05-23

申请号：US16257908

申请日：2019-01-25

Applicant: Cytec Industries Inc.

Inventor： Longgui TANG ,  Alan D. THOMAS ,  Billy D. HARMON

IPC: C08L33/20 ,  B29C48/00 ,  C08F220/44 ,  C08F120/44 ,  C08F2/06 ,  C08F2/38 ,  C08F6/00 ,  D01F9/22

Abstract: A method for synthesizing polyacrylonitrile (PAN) polymer with a narrow molecular weight distribution is disclosed. The preferred PAN polymer has a PDI (Mw/Mn) of about 2 or less. Such PAN polymer is synthesized by controlled/living radical polymerization using a special RAFT (Reversible Addition-Fragmentation Chain Transfer) agent. Also disclosed is a method for producing carbon fibers from PAN polymer with low PDI.23