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Exxpro™ 3035 Specialty Elastomer for Tire Innertube Performance Improvement

IP.com Disclosure Number: IPCOM000249698D
Publication Date: 2017-Mar-21

Publishing Venue

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Abstract

Globally, and even more so in the Asia Pacific region a large number of tires (Bicycle, Motorcycle, Scooter, Passenger Car, truck & Off-the-Road) are fitted with innertubes. Tire innertubes use butyl rubber because of its low permeability to air when compared to general purpose rubbers (GPR) such as natural rubber or styrene butadiene rubber (SBR). Tire innertube performance has improved considerable, with the focus being both on the Innertube design and the compound. Improvements have included better extruded tube dimensional stability, compound processability, reduction in curing time (productivity improvement), better compound heat and ozone resistance, better fatigue and tear resistance, and improved impermeability. To further the compound, Exxpro™ 3035 specialty elastomer can be blended with butyl at 25 and 50 phr, and the formulations can allow further improvement in innertube compound strength, vulcanization kinetics, heat and ozone resistance.

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Exxpro™ 3035 Specialty Elastomer for Tire Innertube Performance Improvement Abstract: Globally, and even more so in the Asia Pacific region a large number of tires (Bicycle, Motorcycle, Scooter, Passenger Car, truck & Off-the-Road) are fitted with innertubes. Tire innertubes use butyl rubber because of its low permeability to air when compared to general purpose rubbers (GPR) such as natural rubber or styrene butadiene rubber (SBR). Tire innertube performance has improved considerable, with the focus being both on the Innertube design and the compound. Improvements have included better extruded tube dimensional stability, compound processability, reduction in curing time (productivity improvement), better compound heat and ozone resistance, better fatigue and tear resistance, and improved impermeability. To further the compound, Exxpro™ 3035 specialty elastomer can be blended with butyl at 25 and 50 phr, and the formulations can allow further improvement in innertube compound strength, vulcanization kinetics, heat and ozone resistance. Background: The commercial vehicle industry is changing in that haul distances and payloads are increasing. With “Just in Time” delivery schedules, tire and tire innertube inflation pressure maintenance and reliability is important. Therefore the innertube compound should demonstrate low permeability, high ozone resistance, heat stability, and low tension set properti...