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Functional diene elastomer with a low pi and improved cold flow, and rubber composition containing same
US9624359B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9624359-B2 |
| Application number | US-201113989103-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 23, 2011 |
| Priority date | Nov 23, 2010 |
| Publication date | Apr 18, 2017 |
| Grant date | Apr 18, 2017 |
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Abstract
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The invention relates to a functionalized diene elastomer composed: a) of a diene elastomer functionalized, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a diene elastomer star-branched with a tin compound, exhibiting a monomodal distribution of molecular weights before star-branching and a polydispersity index before star-branching of less than or equal to 1.3, and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a non-tin-functional diene elastomer, the said diene elastomers a), b) and c) being, before optional functionalization or optional star-branching, the same in nature.
First claim
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The invention claimed is: 1. An elastomer composed: a) of a functionalized diene elastomer, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a star-branched diene elastomer being branched with a tin-comprising compound, exhibiting a monomodal distribution of molecular weights before sta…
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- What does patent US9624359B2 cover?
- The invention relates to a functionalized diene elastomer composed: a) of a diene elastomer functionalized, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a diene elastomer star-branched w…
- Who is the assignee on this patent?
- Abad Mathilde, Dorato Margarita, Favrot Jean-Michel, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification C08L9/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 18 2017 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).