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US 2026/0308187 A1Published application
Compound for use as anti-aging agent in rubber blends, and vehicle tire
AssigneeContinental Reifen Deutschland GmbH
InventorsAndreas Jacob, Julian Strohmeier, Thorben Soeren Haubold, Philipp Schmidt, Frank Fleck, Carla Recker
Life of this patent
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Abstract
A compound of formula (I) to a rubber mixture containing this compound, to a vehicle tire comprising the rubber mixture in at least one component, to a process for producing this compound and to the use of the compound as an aging stabilizer and/or antioxidant.
Claims15
A compound of formula (I):
- wherein
- R1 is selected from the group consisting of
- xi) aromatic radicals and
- xii) aliphatic C3- to C12-radicals,
- R2 and R3 are identical or different and independently selected from the group consisting of aliphatic C1- to C12-radicals, aromatic radicals, halogen radicals, cyano radicals, ester radicals, ketone radicals, ether radicals and thioether radicals,
- R4 is selected from the group consisting of aliphatic C1- to C20-radicals and aromatic C5- to C20-radicals,
- X represents oxygen or sulfur,
- m is 0 or 1 or 2 or 3 and
- n is 0 or 1 or 2 or 3 or 4.
6 more elements
A process for producing a compound of formula (I), comprising the process steps of:
- i) producing or providing a compound of formula (B1):
- ii) reacting the compound of formula (B1) with
- hydrogen and a ketone or aldehyde, preferably a ketone,
- to afford the compound of formula (I):
- wherein
- R1 is selected from the group consisting of
- xi) aromatic radicals and
- xii) aliphatic C3- to C12-radicals,
- R2 and R3 are identical or different and independently selected from the group consisting of aliphatic C1- to C12-radicals, aromatic radicals, halogen radicals, cyano radicals, ester radicals, ketone radicals, ether radicals and thioether radicals,
- R4 is selected from the group consisting of aliphatic C1- to C20-radicals and aromatic C5- to C20-radicals,
- X represents oxygen or sulfur,
- m is 0 or 1 or 2 or 3,
- n is 0 or 1 or 2 or 3 or 4 and
- Z is selected from the group consisting of halogens, sulfonates, sulfonate-based leaving groups, amino and nitro, preferably of amino and nitro.
11 more elements
Dependencies are inferred from the claim text.