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US 11,952,494 B2Granted
Sulfur-crosslinkable rubber mixture, vulcanizate of the rubber mixture, and vehicle tire
AssigneeContinental Reifen Deutschland GmbH
InventorsNils Hojdis, Carla Recker, Michael Wark, Hendrik Multhaupt
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Abstract
The invention relates to a sulfur-crosslinkable rubber mixture, to the vulcanizate thereof, and to a vehicle tire. The rubber mixture according to the invention comprises at least the following constituents: at least one diene rubber; and, at least one char (HTC char) obtained by hydrothermal carbonization of at least one starting substance. A vehicle tire according to the invention comprises at least one vulcanizate according to the invention of the rubber mixture in at least one component.
Claims16
A sulfur-crosslinkable rubber mixture comprising:
- at least one diene rubber, and
- at least one hydrothermal carbonized coal produced by hydrothermal carbonization of at least one starting substance,
- wherein the at least one hydrothermal carbonized coal has a BET nitrogen surface area according to DIN ISO 9277 of 20 to 200 m2/g;
- wherein the at least one hydrothermal carbonized coal is unactivated hydrothermal carbonized coal;
- wherein the hydrothermal carbonization is carried out at a temperature of 150° C. to 300° C. and a pressure of 2 bar to 20 bar;
- wherein the at least one hydrothermal carbonized coal has a surface functionality;
- wherein the sulfur-crosslinkable rubber mixture is free from silane coupling agents;
- and
- wherein at least one metal halide is used in the hydrothermal carbonization.
6 more elements
Dependencies are inferred from the claim text.