Associative and exchangeable oligomers, and composition containing same

A composition comprising a mixture of at least

• a polydiol oligomer A1 with a number-average molar mass of from 600 g/mol to 8,000 g/mol, comprising repeating units corresponding to:
• at least two monomers M1, and
• at least one monomer M2, or
• at least one monomer M3, or
• at least one monomer M2 and at least one monomer M3, and
• a compound A2 comprising at least two boronic ester functions, which is an oligomer with a number-average molar mass of from 600 g/mol to 7,100 g/mol, comprising repeating units which correspond to:
• at least two monomers M4,
• optionally at least one monomer M5, and
• optionally at least one monomer M3,
• wherein
• the monomer M1 corresponds to the general formula (I):
• in which:
• R1 is selected from the group consisting of —H, —CH3 and —CH2—CH3;
• x is an integer ranging from 1 to 18;
• y is an integer equal to 0 or 1;
• X1 and X2, which may be identical or different, are selected from the group consisting of hydrogen, tetrahydropyranyl, methyloxymethyl, tert-butyl, benzyl, trimethylsilyl and t-butyldimethylsilyl;
• or
• X1 and X2 form, with the oxygen atoms directly attached to each of —OX1 and —OX2, a bridge having the following formula
• in which:
• the asterisks (*) symbolize the bonds to the oxygen atoms,
• R′2 and R″2, which may be identical or different, are selected from the group consisting of hydrogen and a C1-C11 alkyl;
• or
• X1 and X2 form, with the oxygen atoms directly attached to each of —OX1 and —OX2, a boronic ester having the following formula:
• in which:
• the asterisks (*) symbolize the bonds to the oxygen atoms,
• R′″2 is selected from the group consisting of a C6-C30 aryl, a C7-C30 aralkyl and a C2-C30 alkyl;
• the monomer M2 corresponds to the general formula (II):
• in which:
• R2 is selected from the group consisting of —H, —CH3 and —CH2—CH3;
• R3 is selected from the group consisting of:
• —C(O)—O—R′3;
• —O—R′3;
• —S—R′3 and —C(O)—N(H)—R′3 with R′3 a C1-C30 alkyl group,
• the monomer M3 corresponds to the general formula (X):
• in which:
• Z1, Z2 and Z3, which may be identical or different, represent groups selected from the group consisting of a hydrogen atom, a C1-C12 alkyl, and a group —OZ′ or —C(O)—O—Z′ with Z′ being a C1-C12 alkyl,
• the monomer M4 corresponds to the formula (IV):
• in which:
• t is an integer equal to 0 or 1;
• u is an integer equal to 0 or 1;
• M and R8 are identical or different divalent bonding groups, selected from the group consisting of a C6-C18 aryl, a C7-C24 aralkyl and a C2-C24 alkyl,
• X is a function selected from the group consisting of —O—C(O)—, —C(O)—O—, —C(O)—N(H)—, —N(H)—C(O)—, —S—, —N(R′4)— and —O— with R′4 being a hydrocarbon-based chain comprising from 1 to 15 carbon atoms;
• R9 is selected from the group consisting of —H, —CH3 and —CH2—CH3;
• R10 and R11, which may be identical or different, represent a group selected from the group consisting of a hydrogen atom, and a hydrocarbon-based group comprising from 1 to 30 carbon atoms, optionally substituted with one or more groups selected from the group consisting of:
• a hydroxyl, and a group —OJ or —C(O)—O-J with J being a hydrocarbon-based group comprising from 1 to 24 carbon atoms;
• and
• the monomer M5 corresponds to the formula (V):
• (V)
• in which:
• R12 is selected from the group consisting of —H, —CH3 and —CH2—CH3,
• R13 is selected from the group consisting of —C(O)—O—R′13;
• —O—R′13, —S—R′13 and —C(O)—N(H)—R′13, with R′13 being a C1-C30 alkyl group.