US 8,299,179 B2 · Conjugated diene-based polymer, conjugated diene-based polymer composition, and process for producing conjugated diene-based polymer

Abstract

Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. A conjugated diene-based polymer obtained by reacting one end of a polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2) with an alkoxysilane compound. V1—S1 (1) wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group. V2-A2 (2) wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.

Claims15

Dependent claims

A conjugated diene-based polymer obtained by reacting one end of a polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2) with an alkoxysilane compound;

V1—S1 (1)
wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group;
V2-A2 (2)
wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.

1 more element

A process for producing a conjugated diene-based polymer comprising the following step A and step B:

(Step A):
a step of polymerizing a monomer component comprising a conjugated diene, a compound represented by the following formula (1) and a compound represented by the following formula (2) with an alkali metal catalyst in a hydrocarbon solvent to obtain a polymer having an alkali metal derived from the alkali metal catalyst on one end of a polymer chain having a monomer unit based on the conjugated diene, a monomer unit based on a compound represented by the following formula (1) and a monomer unit based on a compound represented by the following formula (2);
V1—S1 (1)
wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group;
V2-A2 (2)
wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group;
(Step B):
a step of reacting the polymer obtained in step A with an alkoxysilane compound.

5 more elements

Dependencies are inferred from the claim text.

Conjugated diene-based polymer, conjugated diene-based polymer composition, and process for producing conjugated diene-based polymer

Life of this patent

Conjugated diene-based polymer, conjugated diene-based polymer composition, and process for producing conjugated diene-based polymer

Life of this patent

Abstract

Claims15