US Patent 7427651 Process for producing conjugated diene copolymer rubber
Patent 7427651 was granted and assigned to JSR Corporation on September, 2008 by the United States Patent and Trademark Office.
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A process for producing a conjugated diene copolymer rubber which comprises initiating a copolymerization reaction in a reaction system containing a first conjugated diene compound and a first aromatic vinyl compound and completing the reaction, adding a first polyfunctional monomer to the reaction system, optionally further adding a second conjugated diene compound and a second aromatic vinyl compound, and further conducting copolymerization reaction, and adding a modifier to the reaction system to react the modifier with the copolymer. A rubber composition having excellent processability, exhibiting sufficient hardness even after vulcanization, and possessing reduced rolling resistance can be obtained.
US Patent 07427651 Process for producing conjugated diene copolymer rubber US Patent 7427651 Process for producing conjugated diene copolymer rubber
US Patent 07427651 Process for producing conjugated diene copolymer rubber
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