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US 12,291,626 B2Granted
Rubber composition based on at least one functionalized elastomer comprising polar functional groups and a specific phenolic compound
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsOdile Gavard-Lonchay, Anne-Lise Thuilliez
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Abstract
The invention relates to a rubber composition based on at least one functionalized elastomer comprising polar functional groups, a reinforcing filler and a specific phenolic compound.
Claims15
A rubber composition based on at least one functionalized elastomer comprising polar functional groups, a reinforcing filler and 2-30 phr of a phenolic compound of general formula (I)
- in which:
- G1 is a hydroxyl, carboxyl or alkoxy group or a hydrogen atom;
- G2 is a hydroxyl group or a hydrogen atom;
- G3 is a hydrogen atom or a group selected from the group consisting of hydroxyl, carboxyl, hydrogenocarbonyl, alkyl, carboxylalkyl, carboxylalkenyl, carbonylalkyl, aryl, aryloxy, arylthioxy, arylcarbonyl, amino, and aminoalkyl;
- and
- at least one of the substituents G1 to G3 comprises an oxygen atom,
- wherein the polar functional groups of the at least one functionalized elastomer comprise at least one group selected from the group consisting of hydroxyl, carbonyl, imine and epoxide groups,
- wherein the rubber composition does not comprise molecular sulfur,
- wherein the rubber composition does not comprise zinc oxide, and
- wherein the rubber composition does not simultaneously comprise an alkyl-imidazole and a polycarboxylic acid of general formula (P1):
- in which A is a covalent bond or a hydrocarbon-based group including at least 1 carbon atom, which is optionally substituted and optionally interrupted with one or more heteroatoms.
8 more elements
Dependencies are inferred from the claim text.