Process for the preparation of an elastomer composition comprising a linear or cyclic di-carboxylic acid

A process for preparing an elastomer composition comprising a compound represented by formula (I) below:

• wherein the compound of formula (I) can be linear or cyclic and the symbol does not represent a bond when the compound is linear, and it represents a bond when the compound is cyclic;
• and
• m, v, p, q, r, u, and n can independently be either equal to 1 or equal to 0;
• and X1 and Y can be O or NR7;
• and wherein
• R7 is selected from:
• hydrogen, C2-C6 acyl, C1-C6 alkyl, linear or branched C2-C6 alkenyl or alkynyl, aryl, linear or branched C1-C6 alkyl aryl, linear or branched C2-C6 alkenyl aryl, linear or branched C2-C6 alkynyl-aryl, and heteroaryl;
• and
• if X1 and Y are NR7 then:
• R1, R6 are independently selected from:
• hydrogen, linear or branched C1-C6 alkyl, linear or branched C2-C6 alkenyl or alkynyl, aryl, linear or branched C1-C6 alkyl aryl, linear or branched C2-C6 alkenyl aryl, linear or branched C2-C6 alkynyl-aryl, and heteroaryl;
• if X1 and Y are O then:
• R1, R6 are independently selected from:
• hydrogen, linear or branched C1-C6 alkyl, linear or branched C2-C6 alkenyl or alkynyl, aryl, linear or branched C1-C6 alkyl aryl, linear or branched C2-C6 alkenyl aryl, linear or branched C2-C6 alkynyl-aryl, heteroaryl, alkali metals, alkaline earth metals, and transition metals, or
• wherein R8, R9, R10, R11 are independently selected from the group consisting of:
• hydrogen, linear or branched C1-C6 alkyl, linear or branched C1-C6 alkyl aryl, linear or branched C2-C6 alkenyl aryl, linear or branched C2-C6 alkynyl-aryl, and heteroaryl;
• and wherein
• R2, R3, R4, R5 are independently selected from:
• hydrogen, C2-C6 acyl, C1-C6 alkyl, linear or branched C2-C6 alkenyl or alkynyl, aryl, linear or branched C1-C6 alkyl aryl, linear or branched C2-C6 alkenyl aryl, linear or branched C2-C6 alkynyl-aryl, and heteroaryl;
• and wherein:
• when the compound of formula (I) is linear:
• n is 1 and v, m, or both are 1;
• the symbols and independently represent a single or a double bond, and
• if the symbol is a double bond, p and v are 0 and m is 1 or p and m are 0 and v is 1;
• if the symbol is a double bond q and r are 0 and u is 1 or q and u are 0 and r is 1;
• if the symbol is a single bond p, v and m are 1;
• if the symbol is a single bond q, r and u are 1;
• and
• when the compound of formula (I) is cyclic:
• the symbols and are a double bond, and m, v, p, q, n and u are 0 and r is 1, or m, v, p, q, n and r are 0 and u is 1;
• the process comprising the steps of:
• a) providing one or more elastomers, a compound of formula (I), and at least one reinforcing filler;
• and
• b) performing at least one mixing step.