US 12,304,979 B2 · Diene-based elastomer and a rubber composition

Abstract

The present invention is directed to a benzoxazine-functionalized diene-based elastomer comprising polymer chains including repeat units which include conjugated diolefin monomers, such as 1,3-butadiene and isoprene. Additionally, said elastomer comprises at least one benzoxazine connected to a polymer chain via a spacer, wherein the spacer has a length ranging from 3 to 8 atoms. A further aspect of the present invention is directed to a rubber composition comprising such an elastomer, an article of manufacture comprising this rubber composition, and a method of making said benzoxazine-functionalized diene-based elastomer.

Claims11

Dependent claims

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:
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:

1 more element

Dependencies are inferred from the claim text.

Facts

Application

17/656,112Filed 23 Mar 2022 · us provisional application

Priority

27 Apr 2021

Published

US 2022/0356277 A110 Nov 2022

Granted

20 May 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

C08C 19/22
Chemical modification of rubber: incorporating nitrogen atoms into the molecule
C08F 136/14
Conjugated: containing elements other than carbon and hydrogen
B60C 1/00
Tyres characterised by the chemical composition or the physical arrangement or mixture
B60C 1/0008
Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition: compositions of the inner liner

Diene-based elastomer and a rubber composition

Life of this patent

Diene-based elastomer and a rubber composition

Life of this patent

Abstract

Claims11