Preparation and characterization of high softening point and homogeneous isotropic pitches produced from distilled ethylene tar by a novel bromination method

• Published in: New carbon materials Vol. 33; no. 1; pp. 71 - 81
• Main Authors: Ge, Chuan-zhang, Sun, Zhen-long, Yang, Hai-xiao, Long, Dong-hui, Qiao, Wen-ming, Ling, Li-cheng
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.02.2018
• Subjects: Bromination; Dehydrobromination; Distillation; Ethylene tar; Properties; Distillation; Ethylene tar; Properties; Bromination; Dehydrobromination

Homogeneous isotropic pitches with high softening points were prepared from vacuum-distilled heavy residue ethylene tar (ET-HR) by a two-step method of bromination and subsequent dehydrobromination/polycondensation. The ET-HR was first brominated at 30 or 200 oC, and then heat-treated at 350 oC to e...