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US-2024304813-A1 · Sep 12, 2024 · US
Prevention or suppression of crystallisation of boric acid present in an aqueous phase
US9227913B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9227913-B2 |
| Application number | US-201314403526-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 27, 2013 |
| Priority date | May 29, 2012 |
| Publication date | Jan 5, 2016 |
| Grant date | Jan 5, 2016 |
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Abstract
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A method for preventing the crystallization of boric acid present in an aqueous phase, or for suppressing this crystallization when crystallization has already been initiated, including the addition of at least one compound comprising at least two hydroxyl functions, the compound being selected from alcohols, aminoalcohols, carboxylic acids, and hydroxy acids.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method comprising: providing an aqueous phase containing boric acid; and preventing crystallization of said boric acid in said aqueous phase or suppressing said crystallization when crystallization has already been initiated by adding to said aqueous phase at least one compound comprising at least two hydroxyl functions, said at least one compound being selected from alcohols, amino-alcohols, carboxylic acids, and hydroxyacids, said at least one compound promoting solubilization of said boric acid in said aqueous phase. 2. The method according to claim 1 , wherein said at least one compound comprising at least two hydroxyl functions includes a total number of carbon atoms which is at most equal to eight. 3. The method according to claim 2 , wherein said at least one compound comprising at least two hydroxyl functions includes from 2 to 6 hydroxyl functions. 4. The method according to claim 3 , wherein said at least one compound comprising at least two hydroxyl functions is selected from maleic acid, 2,2-dimethylpropane-1,3-diol, 2-amino-2-(hydroxylmethyl)-propane-1,3-diol, 2-[bis-(2-hydroxyethyl)-amino]-2-(hydroxymethyl)-propane-1,3-diol, myo-inositol, and pentaerythritol. 5. The method according to claim 4 , wherein said at least one compound comprising at least two hydroxyl functions is selected from 2-amino-2-(hydroxylmethyl)-propane-1,3-diol, 2-[bis-(2-hydroxyethyl)-amino]-2-(hydroxymethyl)-propane-1,3-diol, and pentaerythritol. 6. The method according to claim 1 , wherein a mass concentration of said boric acid in said aqueous phase is at least equal to a value of a mass solubility of boric acid at a temperature which is exhibited by said aqueous phase containing said boric acid. 7. The method according to claim 1 , wherein a molar ratio of said at least one compound comprising at least two hydroxyl functions to said boric acid in said aqueous phase is from 0.1/1 to 0.7/1. 8. The method according to claim 1 , wherein said at least one compound comprising at least two hydroxyl functions is added in solid form to said aqueous phase containing said boric acid. 9. The method according to claim 1 , wherein said at least one compound comprising at least two hydroxyl functions is added in liquid form to said aqueous phase containing said boric acid.
Assignees
Inventors
Classifications
- C01B35/1054Primary
Orthoboric acid · CPC title
- C07C215/10Primary
with one amino group and at least two hydroxy groups bound to the carbon skeleton · CPC title
Inositols · CPC title
1,3-Propanediol; 1,2-Propanediol · CPC title
Malonic acid · CPC title
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Frequently asked questions
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- What does patent US9227913B2 cover?
- A method for preventing the crystallization of boric acid present in an aqueous phase, or for suppressing this crystallization when crystallization has already been initiated, including the addition of at least one compound comprising at least two hydroxyl functions, the compound being selected from alcohols, aminoalcohols, carboxylic acids, and hydroxy acids.
- Who is the assignee on this patent?
- Commissariat Energie Atomique
- What technology area does this patent fall under?
- Primary CPC classification C01B35/1054. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 05 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).