Bridgestone. has filed a patent for a rubber composition containing natural rubber, high-Tg modified styrene-butadiene rubber, and low-Tg modified styrene-butadiene rubber with specific modifications and ratios. The composition aims to improve performance characteristics in various applications. GlobalData’s report on Bridgestone 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 Bridgestone, Anti-skid tyre treads was a key innovation area identified from patents. Bridgestone's grant share as of January 2024 was 35%. Grant share is based on the ratio of number of grants to total number of patents.
A patent application (Publication Number: US20240034863A1) discloses a rubber composition for tire tread rubber, comprising natural rubber, high-Tg modified styrene-butadiene rubber, and low-Tg modified styrene-butadiene rubber. The high-Tg rubber is modified with alkoxysilane at both ends, while the low-Tg rubber is modified at one end. The ratio of high-Tg to low-Tg rubber content is greater than 1. The composition also includes a resin, a filler, a silane coupling agent, guanidine, and a vulcanizing agent. The resin is a hydrogenated resin with specific properties, and the manufacturing method involves mixing and kneading processes.
Furthermore, the patent application describes variations of the rubber composition with different components and ratios. The inclusion of guanidine, a specific type of resin, and the manufacturing process involving mixing and kneading are highlighted. The composition is designed for tire tread rubber, with the resulting tire exhibiting improved performance characteristics. The detailed description of the components, modifications, and manufacturing steps provides a comprehensive guide for producing the rubber composition. The patent application also covers the use of the composition in tire manufacturing, emphasizing the importance of the specific ingredients and their proportions for achieving desired properties in the final product.
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