Reaction blowing

This simple kinetic model was found to describe the behaviour of the air blowing reaction with softening point as key characteristics. 

Very often mixtures of the two types are used, because the tertiary amine-based catalysts tend to catalyze the blowing reaction preferentially, and the metal salts—like dibutyltin dilaurate or stannous octoate—promote the gelling reaction more. Moreover it has been found that these two types of catalysts have a synergistic effect when used together. 

Yamaguchi, C., Mondori, J., Matsumoto, A., Honma, H., Kumagai, H., and Sanada, Y. Air-blowing reactions of pitch. 1. Oxidation of aromatic hydrocarbons. 

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