METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE-BASED POLYMER, MODIFIED CONJUGATED DIENE-BASED POLYMER, POLYMER COMPOSITION, CROSS-LINKED PRODUCT, AND TIRE
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Nov 9, 2022
filing date -
Nov 9, 2022
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Abstract
A modified conjugated diene-based polymer is produced by a method which includes a step of polymerizing a monomer containing a conjugated diene compound in the presence of a polymerization initiator which contains a silicon-containing initiator having a group F2 and an alkali metal element or an alkaline earth metal element. F2: a group “*1—Si(R1)n(Y1)3-n” (wherein R1 represents a C1 to C20 hydrocarbyl group; Y1 represents group “—OR2” or group “—NR3R4”; each of R2, R3, and R4 independently represents a C1 to C20 hydrocarbyl group; n is an integer of 0 to 2).
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