UST101805I4 - Method for producing alkali metal salts of carboxymethyloxysuccinic acid - Google Patents

Method for producing alkali metal salts of carboxymethyloxysuccinic acid Download PDF

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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
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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
Application number
US06/283,573
Inventor
Vincent Lamberti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lever Brothers Co
Original Assignee
Lever Brothers Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lever Brothers Co filed Critical Lever Brothers Co
Priority to US06/283,573 priority Critical patent/UST101805I4/en
Assigned to LEVER BROTHERS COMPANY reassignment LEVER BROTHERS COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LAMBERTI, VINCENT
Application granted granted Critical
Publication of UST101805I4 publication Critical patent/UST101805I4/en
Pending legal-status Critical Current

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    • 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

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.
US06/283,573 1978-11-15 1981-07-13 Method for producing alkali metal salts of carboxymethyloxysuccinic acid Pending UST101805I4 (en)

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)

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US (1) UST101805I4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068420A (en) * 1989-12-28 1991-11-26 Monsanto Company Process for preparing ether carboxylate builders

Cited By (1)

* Cited by examiner, † Cited by third party
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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