US 12,304,979 B2
Diene-based elastomer and a rubber composition
Marc Weydert, Bertrange (LU); Suzanne Michelle Balko, Konz (DE); Felipe Nunes Linhares, Esch-sur-Alzette (LU); Roberto Quintana Vicente, Esch-sur-Alzette (LU); Reiner Dieden, Esch-sur-Alzette (LU); and Vincent Berthe, Esch-sur-Alzette (LU)
Assigned to THE GOODYEAR TIRE & RUBBER COMPANY, Akron, OH (US)
Filed by The Goodyear Tire & Rubber Company, Akron, OH (US); and LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY, Esch-sur-Alzette (LU)
Filed on Mar. 23, 2022, as Appl. No. 17/656,112.
Claims priority of provisional application 63/180,303, filed on Apr. 27, 2021.
Prior Publication US 2022/0356277 A1, Nov. 10, 2022
Int. Cl. C08F 136/14 (2006.01)
CPC C08F 136/14 (2013.01) 11 Claims
OG exemplary drawing
 
1. A benzoxazine-functionalized diene-based elastomer comprising:
polymer chains having repeat units which include conjugated diolefin monomers, and
at least one benzoxazine connected to the polymer chains via a spacer, wherein the spacer has the following structure:

OG Complex Work Unit Chemistry
wherein R7 represents an ethylene group, a propylene group, a butylene group, a pentylene group, or a hexylene group; and wherein O is an oxygen atom covalently bound to the polymer chain, or wherein the spacer is an alkylene group having a length in a range of from 3 to 8 atoms, and wherein the benzoxazine comprises one of the following structures:

OG Complex Work Unit Chemistry