Method for preparing wet master batch elastomer composition
US-2024124687-A1 · Apr 18, 2024 · US
Method of manufacturing terminal-modified polymer
US9458274B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9458274-B2 |
| Application number | US-201414770529-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 21, 2014 |
| Priority date | Feb 27, 2013 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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- Title
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Abstract
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A terminal-modified polymer is manufactured by performing a polymerization reaction of a vinyl aromatic monomer, a conjugated diene monomer or both in the presence of an anionic polymerization initiator: and then adding an alkoxy titanium compound thereinto to terminate the polymerization reaction. Alternatively, a terminal-modified polymer can also be manufactured by adding an titanium halide compound instead of the alkoxy titanium compound to terminate the polymerization reaction, and adding for a reaction with a lower alcohol having 1 to 4 carbon atoms. The resulting terminal-modified polymer can improve the dispersibility of silica used as a compounding agent in rubber compositions for automobile pneumatic tires and the like.
First claim
Opening claim text (preview).
The invention claimed is: 1. Method of manufacturing a terminal-modified polymer, comprising: allowing for a polymerization reaction of a vinyl aromatic monomer, a conjugated diene monomer or both in the presence of an anionic polymerization initiator; and adding an titanium halide compound thereinto to terminate the polymerization reaction; and then adding for a reaction with a lower alcohol having 1 to 4 carbon atoms. 2. Method of manufacturing a terminal-modified polymer according to claim 1 , wherein tetrachlorotitanium is used as the titanium halide compound. 3. Method of manufacturing a terminal-modified polymer according to claim 1 , wherein a polymer having a group derived from the titanium halide compound at a terminal site is formed. 4. Method of manufacturing a terminal-modified polymer according to claim 1 , wherein styrene or a derivative thereof is used as the vinyl aromatic monomer. 5. Method of manufacturing a terminal-modified polymer according to claim 1 , wherein 1,3-butadiene or isoprene is used as the conjugated diene monomer. 6. Method of manufacturing a terminal-modified polymer according to claim 1 , wherein as organolithium compound is used as the anionic polymerization initiator.
Assignees
Inventors
Classifications
Incorporating metal atoms into the molecule · CPC title
Styrene · CPC title
Introducing metal atoms or metal-containing groups · CPC title
taking place solely at one end or both ends of the polymer backbone, i.e. not in the side or lateral chains · CPC title
selected from alkali metals · CPC title
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- What does patent US9458274B2 cover?
- A terminal-modified polymer is manufactured by performing a polymerization reaction of a vinyl aromatic monomer, a conjugated diene monomer or both in the presence of an anionic polymerization initiator: and then adding an alkoxy titanium compound thereinto to terminate the polymerization reaction. Alternatively, a terminal-modified polymer can also be manufactured by adding an titanium halide …
- Who is the assignee on this patent?
- Yokohama Rubber Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F236/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 04 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).