Boronic polymer crosslinking

Combinations to cross-link linear or branched polymers, said combinations being chosen from among the combinations comprising:

• A+B;
• A+C;
• A+B+C;
• B+C;
• A+compound of formula (Ia);
• or
• B+compound of formula (Ib1) or (Ib2);
• A, B and C corresponding to the following formulas:
• wherein
• G1, G2, G3 and G4 each represent, independently from one another, a functional group chosen among a thiol function, a maleimide function, a methacrylic function, an acrylic function, a styrenic function, a maleic ester function, an isocyanate function, an electrophilic olefin, a nucleophilic function, an alcohol function and an amine function;
• Rx, R″x, and Ry, R′y, R″y are hydrocarbon groups;
• R′v, R′w and R′x, identical or different, each represent a hydrogen atom, a hydrocarbon radical, or form together, as a pair, an aliphatic or aromatic ring;
• Rv and Rw, respectively R″v and R″w, identical or different, represent a hydrogen atom or a hydrocarbon radical or form an aliphatic or aromatic ring together, or with Rx, respectively or with R″x;
• Ry, R′y, R″y are linked to the boron through a carbon atom,
• dashed bonds are present or absent, they are present when they are part of an aromatic ring, otherwise they are absent,
• compounds of formula (Ia) and (Ib) corresponding to the following formulas:
• wherein
• n is a whole number between 1 and 6;
• i is a whole number between 1 and n;
• k equals 0 or 1;
• each ki equals 0 or 1;
• R1, R′1, R″1, R3i, R′3i, R″3i, R5, R″5, R7i, R″7i, identically or differently, each represent, independently from one another, a hydrogen atom or a hydrocarbon group;
• R6, each R8i identical or different, each represent a hydrocarbon group;
• {R1, R′1, R″1} can together form, in pairs, an aliphatic or aromatic ring;
• {R3i, R′3i, R″3i} can together form, in pairs, an aliphatic or aromatic ring;
• {R5, R″5} can together form an aliphatic or aromatic ring;
• {R7i, R″7i} can together form an aliphatic or aromatic ring;
• R2 and R4, identical or different, each represent a hydrocarbon group;
• R2, is linked to the boron atom by a covalent bond through a carbon atom;
• R6, each R8i is linked to the boron atom by a covalent bond through a carbon atom;
• and
• dashed bonds are present or absent, they are present when they are part of an aromatic ring, otherwise they are absent.