Method for producing conjugated diene polymer

Patent metadata

Field	Value
Publication number	US-12110355-B2
Application number	US-202017297770-A
Country	US
Kind code	B2
Filing date	Jan 28, 2020
Priority date	Jan 28, 2019
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

[Problem to be Solved] Provided is a method for producing a non-petrochemical-derived conjugated diene polymer using an alcohol derived from a non-petrochemical raw material.
[Means to Solve the Problem] In the present invention, the method is characterized in that a non-petrochemical-derived conjugated diene polymer is produced using an alcohol derived from a non-petrochemical raw material having an iron content of 0.0001 mg/L to 2 mg/L.

First claim

The invention claimed is:

1. A method for producing a non-petrochemical-derived conjugated diene polymer using an alcohol derived from a non-petrochemical raw material, comprising the steps of:
using an alcohol having an iron content of 0.0001 mg/L to 2 mg/L derived from a non-petrochemical raw material, bringing the alcohol into contact with a catalyst and carrying out heating to produce a conjugated diene having C 4 to C 12 carbons; and
polymerizing a monomer containing the conjugated diene to produce a non-petrochemical derived conjugated diene polymer.

2. The method according to claim 1 , wherein
the alcohol derived from a non-petrochemical raw material comprises ethanol.

3. The method according to claim 1 , wherein
the conjugated diene comprises at least one selected from the group consisting of 1,3-butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene, 2-methyl-1,3-pentadiene, 1,3-hexadiene, 4,5-diethyl-1,3-octadiene, and 3-butyl-1,3-octadiene.

4. The method according to claim 1 , wherein
the alcohol derived from a non-petrochemical raw material is produced by using a gas containing carbon monoxide and hydrogen as a substrate.

5. The method according to claim 1 , wherein
the alcohol derived from a non-petrochemical raw material is derived from microbial fermentation.

6. The method according to claim 4 , wherein
the gas comprising carbon monoxide and hydrogen is derived from waste.

7. The method according to claim 1 ,
wherein an aromatic hydrocarbon is further polymerized as a monomer.

8. The method according to claim 7 , wherein
the aromatic hydrocarbon is at least one selected from the group consisting of styrene, methylstyrene, ethylstyrene, t-butylstyrene, α-methylstyrene, α-methyl-p-methylstyrene, chlorostyrene, bromostyrene, methoxystyrene, dimethylaminomethylstyrene, dimethylaminoethylstyrene, diethylaminomethylstyrene, diethylaminoethylstyrene, cyanoethylstyrene, and vinylnaphthalene.

9. The method according to claim 1 , wherein
the conjugated diene polymer includes at least one selected from the group consisting of isoprene rubber, butadiene rubber, styrene butadiene rubber, chloroprene rubber, and acrylonitrile butadiene rubber.

10. A method for producing a cross-linked rubber, comprising the step of kneading the non-petrochemical-derived conjugated diene polymer obtained as a rubber component by the method according to claim 1 with a filler, and carrying out cross-linking.

Assignees

• Sekisui Chemical Co Ltd

Inventors

• HAMACHI Kokoro
• YAGIHASHI Noritoshi
• NISHIYAMA Haruka
• Natsuyama Kazuto

Classifications

• C08C19/00

  Chemical modification of rubber · CPC title

• C12R2001/145

  Clostridium · CPC title

• C08F10/06

  Propene · CPC title

• C08F10/02

  Ethene · CPC title

• C10L1/02

  essentially based on components consisting of carbon, hydrogen, and oxygen only · CPC title