Method for analyzing wax or rubber composition, and rubber composition

The RI-plot method in chromatography facilitates the visualization and identification of hydrocarbon components in waxes and rubber compositions, addressing the challenge of improving ozone resistance without affecting tire performance.

JP2025168221APending Publication Date: 2025-11-07SUMITOMO RUBBER INDUSTRIES LTD
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Patent Information

Application Number
JP2025007149
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-26
Filing Date
2025-01-17
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Existing methods to improve ozone resistance in rubber compositions, such as modifying the polymer skeleton and adjusting hardness and modulus, often result in unintended changes to tire performance like fuel economy and ride comfort, while optimizing waxes offer minimal impact on tire performance but require better analytical methods to visualize structural isomers.

Method used

The use of the RI-plot method in chromatographic analysis to visualize structural isomers in wax and rubber compositions, enabling easy identification and quantification of hydrocarbon components contributing to ozone resistance.

Benefits of technology

This method allows for the easy visualization and identification of hydrocarbon components in waxes and rubber compositions, leading to the development of rubber compositions with enhanced ozone resistance.

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Abstract

To provide a method for analyzing a wax or rubber composition that allows components such as structural isomers to be easily visualized, and to provide a rubber composition excellent in ozone resistance.SOLUTION: The method for analyzing a wax or rubber composition is a method using chromatography for analyzing a wax or rubber composition, the method being characterized in that an RI-plot method is used for analysis of the chromatography.SELECTED DRAWING: None
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