𝔖 Bobbio Scriptorium
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99/02383 Preparation of novel pitches by tar air-blowing

Publisher
Elsevier Science
Year
1999
Weight
202 KB
Volume
40
Category
Article
ISSN
0140-6701

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A QI-free coal tar pitch with a softening point around 80Β°C was air blown in an autoclave at 330", 360", and 38O"C, respectively, for various periods in order to prepare a pitch precursor for GPCF. Air blowing markedly increased the softening point and contents of solvent insoluble fractions such as