RADIAL TIRE WITH IMPROVED ENDURANCE

PURPOSE:To prevent corrosion of a steel belt due to rainwater by using an open twist steel cord with a specific rate of elongation, for a belt layer steel cord, and by using a blended rubber which is formed by matching a specific amount of a liquid rubber having an active radical, for a buried rubbe...

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Bibliographic Details
Main Authors IDEI TAKEO, NAKAYASU RITSUO, FUKUMOTO TAKAHIRO
Format Patent
LanguageEnglish
Published 06.09.1983
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Summary:PURPOSE:To prevent corrosion of a steel belt due to rainwater by using an open twist steel cord with a specific rate of elongation, for a belt layer steel cord, and by using a blended rubber which is formed by matching a specific amount of a liquid rubber having an active radical, for a buried rubber. CONSTITUTION:3-5 filament strings of a belt layer steel cord which is composed of a rubber coated steel cord surrounding the crown outer circumferential part of carcass are twisted and made into an open twisted steel cord 1 with 0.1-0.4% rate of elongation extersive in 0.2-5kg loading range per cord, for this usage. A blended rubber obtained by matching a liquid rubber with viscosity average molecular weight of 500-50,000 having a polarity functional group such as hydroxyl group, with polymer molecules such as polybutadiene etc., in 2- 30wt% in comparison with other rubber components, is used as a buried rubber. By the above-said composition, both the uniformity and the endurance of tire can be improved.
Bibliography:Application Number: JP19820031125