UST101805I4 - Method for producing alkali metal salts of carboxymethyloxysuccinic acid - Google Patents
Method for producing alkali metal salts of carboxymethyloxysuccinic acid Download PDFInfo
- Publication number
- UST101805I4 UST101805I4 US06/283,573 US28357381A UST101805I4 US T101805 I4 UST101805 I4 US T101805I4 US 28357381 A US28357381 A US 28357381A US T101805 I4 UST101805 I4 US T101805I4
- Authority
- US
- United States
- Prior art keywords
- carboxymethyloxysuccinate
- metal
- alkaline earth
- alkali metal
- carbonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- CIOXZGOUEYHNBF-UHFFFAOYSA-N (carboxymethoxy)succinic acid Chemical class OC(=O)COC(C(O)=O)CC(O)=O CIOXZGOUEYHNBF-UHFFFAOYSA-N 0.000 title abstract 4
- -1 alkali metal salts Chemical class 0.000 title abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 title 1
- 238000004519 manufacturing process Methods 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 2
- 229910000288 alkali metal carbonate Inorganic materials 0.000 abstract 2
- 150000008041 alkali metal carbonates Chemical class 0.000 abstract 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 abstract 1
- 150000001342 alkaline earth metals Chemical class 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000012429 reaction media Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
An improved method for the conversion of an alkaline earth metal carboxymethyloxysuccinate to a trialkali metal carboxymethyloxysuccinate is disclosed wherein a mixture of alkali metal carbonates and bicarbonates are utilized to precipitate the alkaline earth metal as an insoluble carbonate. The amount of alkali metal carbonate/bicarbonate mixture utilized corresponds to a 1-6% molar excess over the number of moles of alkaline earth metal ion present. The pH of the reaction medium during precipitation is maintained in the range of about 10 to 11.5, preferably 10.6 to 11.0, and the temperature, between 80° and 100° C., preferably 90°-100° C. After separation of the insoluble alkaline earth carbonate, there is obtained a solution of the trialkali metal carboxymethyloxysuccinate containing a low calcium level, namely less than about 0.2% basis the percent of trialkali metal carboxymethyloxysuccinate present.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/283,573 UST101805I4 (en) | 1978-11-15 | 1981-07-13 | Method for producing alkali metal salts of carboxymethyloxysuccinic acid |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US96080778A | 1978-11-15 | 1978-11-15 | |
| US15761580A | 1980-06-09 | 1980-06-09 | |
| US06/283,573 UST101805I4 (en) | 1978-11-15 | 1981-07-13 | Method for producing alkali metal salts of carboxymethyloxysuccinic acid |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US15761580A Continuation-In-Part | 1978-11-15 | 1980-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST101805I4 true UST101805I4 (en) | 1982-05-04 |
Family
ID=26854311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/283,573 Pending UST101805I4 (en) | 1978-11-15 | 1981-07-13 | Method for producing alkali metal salts of carboxymethyloxysuccinic acid |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST101805I4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068420A (en) * | 1989-12-28 | 1991-11-26 | Monsanto Company | Process for preparing ether carboxylate builders |
-
1981
- 1981-07-13 US US06/283,573 patent/UST101805I4/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5068420A (en) * | 1989-12-28 | 1991-11-26 | Monsanto Company | Process for preparing ether carboxylate builders |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STPP | Information on status: patent application and granting procedure in general |
Free format text: DEFENSIVE PUBLICATION OR SIR FILE |