Process for the manufacture of methyl limonitrile
US-9458096-B2 · Oct 4, 2016 · US
Process for making nitriles
US9051241B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9051241-B2 |
| Application number | US-201113808693-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 16, 2011 |
| Priority date | Jul 7, 2010 |
| Publication date | Jun 9, 2015 |
| Grant date | Jun 9, 2015 |
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Abstract
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Adiponitrile is made by reacting 3-pentenenitrile with hydrogen cyanide. The 3-pentenenitrile is made by reacting 1,3-butadiene with hydrogen cyanide. The 1,3-butadiene feed includes a small amount of tertiary-butylcatechol. The catalyst for the reaction of 1,3-butadiene with hydrogen cyanide to make 3-pentenenitrile is recycled. At least a portion of the recycled catalyst is purified by an extraction process.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for making adiponitrile, said process comprising the steps of: (a) reacting in a first reaction zone a mixture comprising 1,3-butadiene (BD) and hydrogen cyanide (HCN) in the presence of a first catalyst comprising zero-valent Ni and a first phosphorus-containing ligand to produce a reaction product comprising 3-pentenenitrile (3PN) and 2-methyl-3-butenenitrile (2M3BN); (b) isomerizing at least a portion of the 2M3BN of step (a) in a second react…
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- C07C253/10Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US9051241B2 cover?
- Adiponitrile is made by reacting 3-pentenenitrile with hydrogen cyanide. The 3-pentenenitrile is made by reacting 1,3-butadiene with hydrogen cyanide. The 1,3-butadiene feed includes a small amount of tertiary-butylcatechol. The catalyst for the reaction of 1,3-butadiene with hydrogen cyanide to make 3-pentenenitrile is recycled. At least a portion of the recycled catalyst is purified by an ext…
- Who is the assignee on this patent?
- Moerbe Larry E, Chao Tseng H, Invista North America Sarl
- What technology area does this patent fall under?
- Primary CPC classification C07C253/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 09 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).