Urea condensation compositions and methods of making the same
US-11465945-B2 · Oct 11, 2022 · US
Process for the preparation of isobutylidene diurea
US9340495B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9340495-B2 |
| Application number | US-201314415039-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 18, 2013 |
| Priority date | Jul 23, 2012 |
| Publication date | May 17, 2016 |
| Grant date | May 17, 2016 |
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Abstract
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The invention relates to a process comprising: reacting isobutyraldehyde with an aqueous solution of urea in the presence of a phase transfer catalyst to form isobutylidene diurea. Preferably, the phase transfer catalyst is a quaternary ammonium salt, more preferably benzyltriethylammonium chloride. Even more preferably, the process is performed in one pot.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for forming isobutylidene diurea, comprising: reacting isobutyraldehyde with an aqueous solution of urea in the presence of a phase transfer catalyst to form isobutylidene diurea, wherein the phase transfer catalyst is a quaternary ammonium salt. 2. The process according to claim 1 , wherein the reacting of the isobutyraldehyde with the aqueous solution of urea in the presence of the phase transfer catalyst is performed in one pot. 3. The process according to claim 1 , wherein the phase transfer catalyst is benzyltriethylammonium chloride. 4. The process according to claim 1 , wherein the amount of phase transfer catalyst is 0.5 to 5 mol % of the isobutyraldehyde. 5. The process according to claim 1 , wherein the amount of phase transfer catalyst is 1 to 5 mol % of the isobutyraldehyde. 6. The process according to claim 1 , wherein the amount of phase transfer catalyst is 2 to 4 mol % of the isobutyraldehyde. 7. The process according to claim 1 , wherein the aqueous solution of the urea contains the urea in an amount of 50 to 85 wt %. 8. The process according to claim 1 , further comprising isolating the isobutyilidene diurea to obtain isolated isobutylidene diurea. 9. The process according to claim 1 , further comprising mixing the formed isobutylidene diurea or the isolated isobutylidene diurea with another fertilizer and/or with a secondary nutrient and/or with a trace element and/or with a plant protection agent and/or with a filler and/or with other fertilizer ingredients to form a mixed fertilizer.
Assignees
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Particulate matter [e.g., sphere, flake, etc.] · CPC title
being further substituted by nitrogen atoms not being part of nitro or nitroso groups · CPC title
Fertilisers containing urea or urea compounds · CPC title
- C07C273/1863Primary
from urea · CPC title
Organic substances · CPC title
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Frequently asked questions
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- What does patent US9340495B2 cover?
- The invention relates to a process comprising: reacting isobutyraldehyde with an aqueous solution of urea in the presence of a phase transfer catalyst to form isobutylidene diurea. Preferably, the phase transfer catalyst is a quaternary ammonium salt, more preferably benzyltriethylammonium chloride. Even more preferably, the process is performed in one pot.
- Who is the assignee on this patent?
- Saudi Basic Ind Corp
- What technology area does this patent fall under?
- Primary CPC classification C07C273/1863. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 17 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).