Method for producing isocyanates in the gas phase
US-2015299111-A1 · Oct 22, 2015 · US
Method for producing isocyanates in the gas phase
US9102594B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9102594-B2 |
| Application number | US-201113696195-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 29, 2011 |
| Priority date | May 5, 2010 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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The invention relates to a process for the preparation of isocyanates by reaction of the corresponding amines with phosgene in the gas phase, wherein a diluent containing between 90.0000% by weight and 99.9999% by weight of substances which are inert in the phosgenation process and between 0.0001% by weight and 10.0000% by weight of oxygen is present during the conversion of the amine into the gas phase and the molar ratio of amine to oxygen (O 2 ) is ≧1,000:1.
First claim
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The invention claimed is: 1. Process for the preparation of isocyanates by reaction of the corresponding amines with phosgene in the gas phase, wherein (i) the amine is converted into the gas phase in a vaporization space in the presence of from >0.10% by weight to 10% by weight of a diluent, based on the total weight of diluent and amine; (ii) the gaseous stream obtained from (i) containing amine and diluent is reacted with a gaseous phosgene stream in a reaction space to give…
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Operations & Transport · mapped topic
- C07C263/10Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9102594B2 cover?
- The invention relates to a process for the preparation of isocyanates by reaction of the corresponding amines with phosgene in the gas phase, wherein a diluent containing between 90.0000% by weight and 99.9999% by weight of substances which are inert in the phosgenation process and between 0.0001% by weight and 10.0000% by weight of oxygen is present during the conversion of the amine into the …
- Who is the assignee on this patent?
- Bruns Rainer, Lorenz Wolfgang, Rausch Andreas Karl, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C07C263/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 11 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).