Polymerization initiator, modified-conjugated diene polymer and tire produced therefrom

Patent metadata

Field	Value
Publication number	US-9309371-B2
Application number	US-201314096800-A
Country	US
Kind code	B2
Filing date	Dec 4, 2013
Priority date	Dec 6, 2012
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

The present disclosure relates to a polymerization initiator and a modified conjugated diene polymer prepared using the same, and more particularly to a polymerization initiator which is a compound represented by the following formula 1, and a modified conjugated diene polymer prepared using the same:

wherein R 1 to R 5 are each independently hydrogen or a C 1-10 alkylgroup or its carbanion; n− represents the number of negative charges of the carbanion and is 1− to 5−; M is a metal; and n is equal to the number of carbanions in R 1 to R 5 .

First claim

What is claimed is:

1. A polymerization initiator which is a compound represented by Formula 1:

wherein R 1 is carbanion of a C 1-10 alkyl group; R 2 to R 5 are hydrogen; n− represents the number of negative charges of the carbanion and is 1− to 5−; M is a metal;
wherein the polymerization initiator is made by reacting a compound represented by Formula 3 with a compound represented by Formula 4:

wherein R 6 is a C 1-10 alkyl group; and R 7 to R 10 are hydrogen; and
R(Li) x   [Formula 4]

wherein R is a C 1-20 hydrocarbyl group, and x is an integer ranging from 1 to 4, wherein a molar ratio between the compound of Formula 3 and the compound of Formula 4 is 1:1.1 to 1:1.4.

2. The polymerization initiator of claim 1 , wherein n is 1 or 2.

3. The polymerization initiator of claim 1 , wherein M is an alkali metal.

4. A polymerization initiator solution comprising a polymerization initiator represented by Formula 1, a solvent and a polar additive:

wherein R 1 is carbanion of a C 1-10 alkyl group; R 2 to R 5 are hydrogen; n− represents the number of negative charges of the carbanion and is 1− to 5−; M is a metal;
wherein the polymerization initiator is made by reacting a compound represented by Formula 3 with a compound represented by Formula 4:

wherein R 6 is a C 1-10 alkyl group; and R 7 to R 10 are hydrogen; and
R(Li) x   [Formula 4]

wherein R is a C 1-20 hydrocarbyl group, and x is an integer ranging from 1 to 4, wherein a molar ratio between the compound of Formula 3 and the compound of Formula 4 is 1:1.1 to 1:1.4.

5. The polymerization initiator solution of claim 4 , wherein the polar additive is contained in an amount of 0.1-40 moles per mole of the compounds represented by formula 1.

6. The polymerization initiator solution of claim 4 , wherein the polar additive is a base.

7. The polymerization initiator solution of claim 4 , wherein the polar additive is ether, amine or a mixture thereof.

8. The polymerization initiator solution of claim 4 , wherein the polymerization initiator solution is used for preparation of a conjugated diene polymer.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Ro Mi
• Yoon Du Weon
• Kim Chang Woo
• Park Jun Hyun
• Lee Sang Mi

Classifications

• C08F2/00 Primary

  Processes of polymerisation · CPC title

• Y02T10/862

  Cross-Sectional Technologies · mapped topic

• C07D213/16

  containing only one pyridine ring · CPC title

• C08F236/10

  with vinyl-aromatic monomers · CPC title

• C08L9/02

  Copolymers with acrylonitrile · CPC title