Patents for October 2022
Patents as compiled by the editor of Rubber World Magazine for October 2022 Rubber-metal adhesion promoter, rubber composition, and tireU.S.
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Articles
Goodyear Eagle GO concept tire aims to reach 300,00 miles
For over 120 years, the Goodyear Tire & Rubber Company has pursued sustainable, low-maintenance innovations and inventions. Partnering with Citroën continues the long-standing relationship between both brands. The new Citroën concept, Oli, is an urban pickup truck concept that explores the usage of sustainable and recyclable materials. So it is only fitting that this electric truck concept is fitted with Goodyear’s Eagle GO concept tire which also explores the usage of a range of sustainable materials in its tread compound.
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Elkem celebrates grand opening of new medical grade silicones facility
Elkem Silicones celebrated the grand opening of its new specialized facility for producing high purity medical silicones on Wednesday, September 28, in York, S.C. Customers and local, state, and federal officials, attended the event which included a ribbon-cutting ceremony, facility tours and a reception.
Designed to produce high purity silicone materials that meet the MedTech and Pharma market requirements, this new 18,000 sq.ft. site features state-of-the-art ISO-certified Class 7 and Class 8 clean rooms
Continental takes pioneering role in responsible sourcing of natural rubber
Continental pursues a holistic approach to make the complex and fragmented supply chains for natural rubber more sustainable: The latest digital technologies, local involvement in the cultivation of rubber, and close cooperation with strong partners are aimed at creating more transparency along the entire value chain. “We actively take responsibility in our supply chains. Only when natural rubber is responsibly sourced, we consider it a sustainable material,” says Claus Petschick, Head of Sustainability at Continental Tires. As of today, completely seamless traceability of natural rubber is technically impossible due to the high complexity of the supply chain. With its commitment, Continental is working at full speed on a blueprint for the sustainable and responsible structuring of supply chains.
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ExxonMobil expands product portfolio to Advance Healthcare Solutions
ExxonMobil has expanded its portfolio of healthcare solutions to meet changing medical market needs for healthy, safe material options. Adhering to industry requirements for testing, quality assurance and traceability, the portfolio unites a wide range of high-performance products that are produced using Good Manufacturing Practices (GMP) for batch-to-batch product consistency that customers can rely on.
The portfolio provides the building blocks to engineer a range of applications including medical supplies, infection protection products, and pharmaceutical and laboratory supplies. The portfolio includes Achieve™ Advanced PP, ExxonMobil™ PP, Vistamaxx™ performance polymers, Exact™ polyolefin elastomers, ExxonMobil™ butyl polymers, Exxpro™ specialty elastomers and ExxonMobil™ Isopropyl Alcohol (IPA).
Promise of pyrolysis in tire circularity
Operations in the tire pyrolysis sector, as part of the tire recycling industry, are maturing to become not recycling operations, but serious producers of high grade raw materials in the rubber supply chain, on equal footing with virgin materials.
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Targeting sustainable additives through derivatization of soybean oil
It is known that the oil used as a plasticizing agent in rubber compounds has historically been of petroleum origin. These oils include distillate aromatic extract (DAE), treated distillated aromatic extract (TDAE) and medium extracted solvate (MES). Since 2011, Goodyear has been investigating the utility of soybean oil (SBO) as an alternative to replace petroleum based oils. It was found that the unique structural (figure 1) and physical properties of SBO can be harnessed to provide improvements in compound processing and performance for tire applications. Since this discovery, Goodyear has developed multiple products that make use of SBO through extension in solution styrene-butadiene rubber (SSBR) and as a raw material in tire compounds. The benefits of SBO were harnessed through these avenues to create the Assurance WeatherReady tire in 2017, which is the industry’s first passenger tire to achieve full replacement of petroleum based oil with SBO in the tread.
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NR-silica nano-composites for improved bonding in truck/bus tread
Traditional internal mixing techniques for natural rubber (NR) and silica leave room for improvement in achieving good polymer-filler interaction in TBR (truck and bus radial) tread compounds. Internal, solid phase mixing of NR polymer and precipitated silica is complicated by several factors.
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Tire compounding with graphene: The tire sidewall
The sidewall typically extends from the exterior of the bead area to the shoulder of the tire. This component in a tire has three functions;
Protect the side of the tire from damage due to curbs or other foreign objects.
Due to flexing as the tire passes through its loaded footprint, it must also demonstrate fatigue and aging resistance and protect the tire casing
Via lettering on the sidewall, provide structural information (plies, belts, load carrying capacity) and other regulatory information such as place and date of manufacture, and if needed, white strips (white sidewall), raised white letters, the tire brand or model and name of the manufacturer.
Silicone rubber from plant based materials
Industrial grade silicone rubber compounds whose precursors are derived from plant based raw materials will be introduced by Wacker at K 2022, the international trade fair for plastics and rubber taking place in Düsseldorf, Germany, October 19- 26. Wacker will unveil several biomethanol based product lines under the Elastosil eco umbrella, including one liquid and six solid silicone rubber grades, as well as selected Silmix silicone rubber compounds.
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