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95/05976 Modification of coal-tar pitch by air-blowing - I. Variation of pitch composition and properties


Publisher
Elsevier Science
Year
1995
Weight
207 KB
Volume
36
Category
Article
ISSN
0140-6701

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Preparation of isotropic pitch precursor
✍ Toyohiro Maeda; Shu Ming Zeng; Katsuhisa Tokumitsu; Juji mondori; Isao Mochida πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 733 KB

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