Modification of the thermorheological properties of coal tar pitch by adding of selected poly(ethylene terephthalate) process waste product

Janusz Zieliński , Wiesława Ciesińska , Jerzy Polaczek

Abstract

Results are described of the studies intended to establish the effect of the PET process recovery step waste fraction composed of terephthalates and mono and diethylene glycols used as additive, on the thermorheological properties of coal tar pitch and on the reduction of benzo[a]pyrene (B[a]P) content in the pitch. When added to coal tar pitch, the glycol recovery residue was found to plastify the pitch and at the same time to enhance its thermal stability. With ~ 30% residue added to the pitch, the content of B[a]P was found to be reduced by about 90%.. A formulation was developed to prepare sealing-and-insulating materials by using the binder based on the pitch/ester-and-glycol-waste blend. The composition made up from the pitch and the glycol recovery residue was found to yield an environmentally safe binder to be used in sealing-and-insulating materials, e.g., in filling and jointing materials for the building industry.
Author Janusz Zieliński (FCEMP / IC)
Janusz Zieliński,,
- The Institute of Chemistry
, Wiesława Ciesińska (FCEMP / IC)
Wiesława Ciesińska,,
- The Institute of Chemistry
, Jerzy Polaczek
Jerzy Polaczek,,
-
Journal seriesPolish Journal of Applied Chemistry, ISSN 0867-8928
Issue year2000
Vol44
No2-3
Pages167-171
Publication size in sheets0.5
Keywords in Englishcoal tar pitch, modification, thermorheological properties
Languageen angielski
Score (nominal)0
Score sourcejournalList
Publication indicators GS Citations = 3.0
Citation count*3 (2014-12-24)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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