Rubber compositions for radio devices in tires
AssigneeBridgestone Americas Tire Operations, LLC
InventorsCraig R. Balnis, Amy M. Randall, Paul B. Wilson
Life of this patent
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Abstract
The embodiments described herein generally relate to an electronic communication module suitable for incorporating into a tire or tire retread, where the electronic communication module comprises a radio device having at least a portion of its outer surface surrounded by a rubber composition. Certain embodiments also relate to tires or tire retreads containing the electronic communication module. In addition, certain embodiments relate to methods for improving the readability of a radio device incorporated into a tire or tire retread.
Claims23
1-14. (canceled)
An electronic communication module for a tire comprising:
- a radio device having at least a portion of its outer surface surrounded by a rubber composition, the rubber composition comprising
- 100 phr of at least one diene-based elastomer, and
- at least about 35 phr of carbon black, wherein the carbon black has a nitrogen surface area of no more than 30 m2/g and a DBP absorption of no more than 60 cm3/100 g,
- the rubber composition, when cured, having a dielectric constant at 915 MHz of less than 7.
A tire or tire retread comprising an electronic communication module comprising
- a radio device having at least a portion of its outer surface surrounded by a rubber composition, the rubber composition comprising
- 100 phr of at least one diene-based elastomer, and
- 35-100 phr of carbon black, wherein the carbon black has a nitrogen surface area of no more than 30 m2/g and a DBP absorption of no more than 60 cm3/100 g,
- the rubber composition, when cured, having a dielectric constant at 915 MHz of 2.5 to 7.
A method of improving the readability of a radio device upon incorporation into a tire or tire retread, the method comprising surrounding at least a portion of the outer surface of the radio device by a rubber composition, thereby forming an electronic communication module, the rubber composition comprising
- 100 phr of at least one diene-based elastomer, and
- at least 35 phr of carbon black, wherein the carbon black has a nitrogen surface area of no more than 30 m2/g and a DBP absorption of no more than 60 cm3/100 g, the rubber composition, when cured, having a dielectric constant at 915 MHz of less than 7.
Dependencies are inferred from the claim text.