SELF-HEALING POLYMER MATERIALS OF INCREASED THERMAL RESISTANCE BASED ON THE TANDEM DIELS-ALDER REACTION Russian patent published in 2023 - IPC C08F2/60 C08G73/00 C08K5/3415 

FIELD: polymer production.

SUBSTANCE: self-healing polymer materials for structural polymer composite materials for the aerospace industry. These self-healing polymer materials of increased heat resistance based on the tandem Diels-Alder reaction are characterized by the general structural formula (1)

where the fragments of R₁ and R₂ are various aliphatic substituents C₂-C₁₈; in the structure of the obtained polymer materials, the end groups are furan groups with the number of units in the polymer chain (n=30-35) according to ¹H-NMR spectroscopy data. The increased heat resistance of the considered polymer materials is due to the fact that the maximum rate of the reverse Diels-Alder reaction for tandem adducts is observed in the range of 200-250°C according to differential scanning calorimetry. The degradation of the considered polymer materials at these temperatures does not occur according to the data of thermogravimetric analysis.

EFFECT: development of self-healing polymer compounds based on the tandem Diels-Alder reaction with significantly higher heat resistance and extended operating temperature range.

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