Self-healing polymers

A Diels-Alder-based polymer comprising the reaction product of a composition comprising a polymaleimide and a monomeric unit according to formula (I):

• wherein:
• R1, R2, R3, and R4 are independently selected from H or C1-C4 alkyl;
• R5, R6, R7, R8, R9, and R10 are independently selected from H or A;
• each A independently represents a furan-comprising functional group;
• L1, L2, and L3 are independently selected from a direct bond or a divalent C1-C4 alkyl;
• n is 0 or 1;
• and
• x+y+z is an integer selected from 1 to 75;
• wherein the polymaleimide and the monomeric unit each comprise a functionality of at least 2;
• the sum of the functionalities of both the polymaleimide and the monomeric unit is at least 4.6;
• and a maleimide-to-furan stoichiometric ratio between the polymaleimide and the monomeric unit ranges from 0.20 to 0.65.