Goodyear Tire & Rubber has been granted a patent for a low-cost vulcanization accelerator that improves cure rates and reduces scorch in rubber compositions. The accelerator, a monofunctional thiuram compound, also enhances compression set, age hardening characteristics, and crosslink resistance. The patent claims a rubber composition consisting of unsaturated rubber, reinforcing silica, a silica coupling agent, sulfur, carbon black, and the accelerator. GlobalData’s report on Goodyear Tire & Rubber gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Goodyear Tire & Rubber, anti-skid tyre treads was a key innovation area identified from patents. Goodyear Tire & Rubber's grant share as of September 2023 was 75%. Grant share is based on the ratio of number of grants to total number of patents.

A recently granted patent (Publication Number: US11773238B2) discloses a productive rubber composition that can be used in various rubber articles. The composition includes an unsaturated rubber, reinforcing silica, a silica coupling agent, sulfur, carbon black, and an accelerator. The accelerator is present at a level ranging from 0.1 phr to 10 phr. The composition may also include a metal activator compound such as zinc compounds, cadmium compounds, mercury compounds, calcium compounds, or magnesium compounds. Additionally, the composition may contain additional fillers like nano-cellulose, clay, lignin, or talc.

The reinforcing silica in the composition is present at a level ranging from 10 phr to 250 phr, while the carbon black is present at a level ranging from 5 phr to 80 phr. The total level of silica and carbon black in the composition ranges from 45 phr to about 130 phr. The silica coupling agent is present at a level ranging from 1 phr to 20 phr.

The patent also describes a method for manufacturing a rubber article using the productive rubber composition. The method involves shaping the composition into a desired geometric form in a mold and curing it at an elevated temperature ranging from about 270° F. to 350° F.

The patent further discloses a rubber article made from the cured unsaturated rubber. The cured rubber is crosslinked with monosulfide groups and has pendent —S—R3 groups, where R3 represents an organyl radical containing at least 4 carbon atoms. The rubber article includes a reinforcing silica and can be used in various applications such as tires, latex gloves, gaskets, and seals.

Overall, this patent provides a novel rubber composition and a method for manufacturing rubber articles with improved properties. The composition includes specific components and their respective levels, allowing for customization based on the desired application. The resulting rubber articles, such as tires and latex gloves, exhibit enhanced performance and durability.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.