Method for producing conjugated diene rubber
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United States of America Patent
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Jan 16, 2018
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N/A
app pub date -
Aug 14, 2013
filing date -
Sep 28, 2012
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Abstract
A method for producing a conjugated diene rubber is provided which includes the steps of: (a) forming a polymer block (A) by using a polymerization initiator in an inert solvent, the polymer block (A) having an active terminal and containing a specific amount of an isoprene monomeric unit and a specific amount of an aromatic vinyl monomeric unit; (b) forming a polymer block (B) having an active terminal and containing a specific amount of a 1,3-butadiene monomeric unit and, as needed, a specific amount of an aromatic vinyl monomeric unit, thereby obtaining a conjugated diene polymer chain having an active terminal and having the polymer block (A) and a polymer block (B); (c) bringing a specific amount of a predetermined denaturant into reaction with the active terminal of the conjugated diene polymer chain having the active terminal.
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