Method for preparing conjugated diene polymer, composition comprising the same and tire comprising the composition
US-2015376321-A1 · Dec 31, 2015 · US
Method of production of radial conjugated diene polymer
US8993675B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8993675-B2 |
| Application number | US-201013319975-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 11, 2010 |
| Priority date | May 11, 2009 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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An alkali metal-reacted aromatic compound which has three or more carbon atoms which are directly bonded to alkali metal atoms and aromatic rings in one molecule is used as a polymerization initiator to polymerize a monomer mixture which is contains at least one conjugated diene compound to thereby produce a radial conjugated diene polymer. Further, active ends of the polymer having active ends which is obtained by this method is made to react with a modifier which can react with the active ends to thereby produce an end-modified radial conjugated diene polymer. According to the present invention, it is possible to provide a method of production of the radial conjugated diene polymer which gives a high degree of freedom of polymer design and easy control of the polymer structure.
First claim
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The invention claimed is: 1. A method of production of a radial conjugated diene polymer comprising polymerizing a monomer mixture which contains at least a conjugated diene compound by using an alkali metal-reacted aromatic compound which has three or more carbon atoms which are directly bonded to alkali metal atoms and aromatic rings in one molecule as a polymerization initiator. 2. The method of production of a radial conjugated diene polymer as set forth in…
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- What does patent US8993675B2 cover?
- An alkali metal-reacted aromatic compound which has three or more carbon atoms which are directly bonded to alkali metal atoms and aromatic rings in one molecule is used as a polymerization initiator to polymerize a monomer mixture which is contains at least one conjugated diene compound to thereby produce a radial conjugated diene polymer. Further, active ends of the polymer having active ends…
- Who is the assignee on this patent?
- Hayano Shigetaka, Sugimura Takeshi, Tsukahara Yasuhisa, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08C19/44. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2015 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).