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1. (WO2018128285) METHOD FOR PREPARING MODIFIED CONJUGATED DIENE-BASED POLYMER

Pub. No.:    WO/2018/128285    International Application No.:    PCT/KR2017/014322
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Fri Dec 08 00:59:59 CET 2017
IPC: C08F 36/04
C08F 236/10
C08F 2/38
C08K 3/36
Applicants: LG CHEM, LTD.
주식회사 엘지화학
Inventors: KIM, Jin Young
김진영
KO, Jun Seok
고준석
KIM, No Ma
김노마
KIM, Yu Jin
김유진
SON, Ki Seok
손기석
SOHN, Hae Sung
손해성
LEE, Ro Mi
이로미
LEE, Sang Mi
이상미
LEE, Tae Chul
이태철
LEE, He Seung
이희승
Title: METHOD FOR PREPARING MODIFIED CONJUGATED DIENE-BASED POLYMER
Abstract:
The present invention relates to a method for preparing a modified conjugated diene-based polymer. More specifically, the present invention provides a method for preparing a modified conjugated diene-based polymer, the method comprising the steps of: (S1) polymerizing a conjugated diene-based monomer in the presence of an organic metal compound in a hydrocarbon solvent, to prepare an organic metal-conjugated active polymer; and (S2) reacting or coupling the active polymer prepared in step (S1) and a modifier, step (S1) being consecutively performed in two units of polymerization reactors, wherein the polymerization conversion rate in a first reactor of the polymerization reactors is 50% or lower.