Hydrocarbon polymers having two azlactone end groups

Hydrocarbon polymer comprising two azlactone end groups, the said hydrocarbon polymer having the formula (I):

• in which:
• F1 represents a radical of formula (IIa) and F2 represents a radical of formula (IIb):
• in which:
• g and d, which are identical or different, represent an integer equal to 0, 1, 2 or 3;
• R14 and R15, which are identical or different, represent a hydrogen atom or an aromatic or linear or branched aliphatic hydrocarbon group comprising from 1 to 20 carbon atoms which can be interrupted by one or more oxygen or sulphur atoms;
• in addition, the R14 and R15 groups can form, with the carbon atom to which they are connected, a hydrocarbon ring comprising from 4 to 10 ring members and optionally one or more heteroatoms chosen from oxygen and sulphur;
• each carbon-carbon bond of the main chain of the polymer, denoted , represents a double bond or a single bond, in accordance with the valency rules of organic chemistry;
• R1, R2, R3, R4, R5, R6, R7 and R8, which are identical or different, represent:
• a hydrogen or halogen atom;
• or
• a radical comprising from 1 to 22 carbon atoms chosen from alkyl, alkenyl, alkoxycarbonyl, alkenyloxycarbonyl, alkylcarbonyloxy or alkenylcarbonyloxy, it being possible for the hydrocarbon chain of the said radical to be optionally interrupted by at least one oxygen atom or one sulphur atom;
• in addition:
• at least one of the R1 to R8 groups can form, with at least one other of the R1 to R8 groups and with the carbon atom or atoms to which the said groups are connected, a saturated or unsaturated hydrocarbon ring or heterocycle which is optionally substituted and which comprises from 3 to 10 ring members;
• and
• at least one of the pairs (R1, R2), (R3, R4), (R5, R6) and (R7, R8) can form, with the carbon atom to which the said pair is connected, a carbonyl C═O group or a group of 2 carbon atoms connected by a double bond:
• C═C, the other carbon atom of which carries 2 substituents chosen from a hydrogen atom or a C1-C4 alkyl radical;
• x and y are integers, which are identical or different, within a range extending from 0 to 6, the sum x+y being within a range extending from 0 to 6;
• R9, R10, R11 and R12, which are identical or different, represent:
• a hydrogen or halogen atom;
• or
• a radical comprising from 1 to 22 carbon atoms which is chosen from alkyl, alkenyl, alkoxycarbonyl, alkenyloxycarbonyl, alkylcarbonyloxy, alkenylcarbonyloxy or alkylcarbonyloxyalkyl, it being possible for the hydrocarbon chain of the said radical to be optionally interrupted by at least one oxygen atom or one sulphur atom;
• in addition:
• at least one of the R9 to R12 groups can form, with at least one other of the R9 to R12 groups and with the carbon atom or atoms to which the said groups are connected, a saturated or unsaturated hydrocarbon ring or heterocycle which is optionally substituted and which comprises from 3 to 10 ring members;
• and
• at least one of the pairs (R9, R10) and (R11, R12) can form, with the carbon atom to which the said pair is connected, a group of 2 carbon atoms connected by a double bond:
• C═C, the other carbon atom of which carries 2 substituents chosen from a hydrogen atom or a C1-C4 alkyl radical;
• and
• the carbon atom carrying one of the groups of the pair (R9, R10) can be connected to the carbon atom carrying one of the groups of the pair (R11, R12) by a double bond, it being understood that, in accordance with the valency rules, just one of the groups of each of these 2 pairs is then present;
• R13 represents:
• an oxygen or sulphur atom, or
• a divalent —CH2—, —C(═O)— or —NR0— radical in which R0 is an alkyl or alkenyl radical comprising from 1 to 22 carbon atoms;
• n1 and n2, which are identical or different, are each an integer or equal to 0, the sum of which is denoted by n;
• m is an integer or equal to 0;
• p1 and p2, which are identical or different, are each an integer or equal to 0, the sum p1+p2 of which adheres to the equation:
• p1+p2=q×(z+1)
• in which:
• q is an integer or equal to 0;
• and
• z is an integer ranging from 1 to 5;
• and
• n1, n2, m, p1 and p2 additionally being such that the number-average molecular weight Mn of the polymer of formula (I) is within a range extending from 400 to 100 000 g/mol and its polydispersity index is within a range extending from 1.0 to 3.0.