| http://www.w3.org/ns/prov#value | - In order to hydrogenate the triblock or radial teleblock copolymer (a), which is obtained by reacting the polyfunctional coupling agent with a living polymer of the block copolymer composed of the ??-methylstyrene polymer blocks and conjugated diene polymer blocks, the coupling reaction is terminated by adding, if necessary, an active hydrogen compound such as an alcohol, carboxylic acid and water
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