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