US 12,291,626 B2
Rubber composition based on at least one functionalized elastomer comprising polar functional groups and a specific phenolic compound
Odile Gavard-Lonchay, Clermont-Ferrand (FR); and Anne-Lise Thuilliez, Clermont-Ferrand (FR)
Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
Appl. No. 17/414,204
Filed by COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
PCT Filed Dec. 11, 2019, PCT No. PCT/FR2019/053019
§ 371(c)(1), (2) Date Jun. 15, 2021,
PCT Pub. No. WO2020/128234, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 1873024 (FR), filed on Dec. 17, 2018; and application No. 1900923 (FR), filed on Jan. 31, 2019.
Prior Publication US 2022/0025163 A1, Jan. 27, 2022
Int. Cl. C08L 15/00 (2006.01); B60C 1/00 (2006.01); C08J 5/04 (2006.01); C08K 3/04 (2006.01); C08K 5/07 (2006.01); C08K 5/13 (2006.01); C08K 5/134 (2006.01); C08K 5/18 (2006.01); C08K 13/02 (2006.01)
CPC C08L 15/00 (2013.01) [B60C 1/0016 (2013.01); B60C 1/0041 (2013.01); C08J 5/041 (2013.01); C08K 13/02 (2013.01); B60C 2001/0066 (2013.01); C08J 2315/00 (2013.01); C08K 3/04 (2013.01); C08K 5/07 (2013.01); C08K 5/13 (2013.01); C08K 5/134 (2013.01); C08K 5/18 (2013.01)] 15 Claims
 
1. 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)

OG Complex Work Unit Chemistry
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):

OG Complex Work Unit Chemistry
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.