ch. 1. Degradation of aliphatic-aromatic polyimides : polyalkanimides -- ch. 2. Degradation of aliphatic-aromatic polyamides -- ch. 3. Degradation of poly(phenylquinoxaline) (PPQ) and copoly( imidophenylquinoxalines) -- ch. 4. Degradation of polysulfones and polyesterimides -- ch. 5. Degradation of aromatic co-polyesters derived from noxybenzoic, tere- and isophthalic acids, and dioxydiphenyl -- ch. 6. Fundamental regularities of thermal oxidation of heat-resistant heterochain polymers -- ch. 7. Practical stabilization of heat resistant polymers -- ch. 8. Conclusion.