MUMBAI, India, Aug. 17 -- Intellectual Property India has published a patent application (202617084417 A) filed by Asahi Kasei Kabushiki Kaisha on July 09, 2026, for Modified Conjugated Diene Polymer And Method For Producing Modified Conjugated Diene Polymer.
Inventors include Hashizume Yuta; Watabe Takuma; Kondo Tomohiro; and Hisamura Kenta.
The application for the patent was published on August 14, 2026, under issue no. 33/2026.
Abstract: The modified conjugated diene polymer includes a conjugated diene monomer unit and an aromatic vinyl monomer unit, has a weight average molecular weight measured by GPC of 700,000 or more, has a modification rate of 60% or more, has one tand peak in a temperature range of -100°C to 100°C in a tand peak graph corresponding to temperatures derived from dynamic viscoelasticity analysis based on Condition 1 by an ARES (Advanced Rheometric Expansion System), and has a height of the tand peak of from 0.90 to 1.45. Condition 1 A tand peak graph is obtained by using a dynamic mechanical analyzer in torsional mode under conditions of a frequency of 10 Hz, a deformation rate (Strain) of 0.5%, and a temperature elevation rate of 5° C/min.
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