Claims
- 1. A process for producing a crystalline double betaine salt corresponding to the formula ##STR17## which comprises the steps of preparing an aqueous starting solution containing the ions ##STR18## Na.sup.+ and Cl.sup.- whose composition, as illustrated in a ternary diagram of betaine-NaCL-water is situated in an area between two lines diverging from a common point T and passing through the points I and II defined by the following molar ratios:
- ______________________________________Moles of betaine Moles of NaCl Moles of water______________________________________T 72 28 185I 64 36 285II 72 28 245______________________________________
- adding betaine, sodium chloride and water in molar proportions of 1:1:2 to the starting solution, and thereafter separating the double betaine salt by crystallization at a temperature below 50.degree. C.
- 2. A process as claimed in claim 1 wherein the double betaine salt is crystallized at a temperature of approximately 20.degree. C.
- 3. A process as claimed in claim 1 wherein the pH of the crystallization medium of the double betaine salt is from about 6 to 7.
- 4. A process for producing a crystalline double betaine salt corresponding to the formula ##STR19## which comprises the steps of preparing an aqueous starting solution containing the ions ##STR20## Na.sup.+ and Cl.sup.- whose composition, as illustrated in a ternary diagram of betaine-NaCL-water is situated in an area between two lines diverging from a common point T and passing through the points I and II defined by the following molar ratios:
- ______________________________________Moles of betaine Moles of NaCl Moles of water______________________________________T 72 28 185I 64 36 285II 72 28 245______________________________________
- adding a solution of betaine hydrochloride, sodium hydroxide and water in molar proportions of 1:1:1 to the starting solution and thereafter separating the double betaine salt by crystallization at a temperature below 50.degree. C.
- 5. A process as claimed in claim 4 wherein the double betaine salt is crystallized at a temperature of approximately 20.degree. C.
- 6. A process as claimed in claim 4 wherein the pH of the crystallization medium of the double betaine salt is from about 6 to 7.
Priority Claims (1)
Number |
Date |
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3412/74 |
Mar 1974 |
CHX |
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CROSS REFERENCE TO RELATED APPLICATIONS
This application is a divisional application of application Ser. No. 158,825, filed June 12, 1980 now U.S. Pat. No. 4,530,799, which in turn is a continuation of application Ser. No. 920,969, filed June 30, 1978, now abandoned, which in turn is a continuation-in-part of application Ser. Nos. 811,203 and 811,191 both filed June 29, 1977, both now abandoned. Ser. No. 811,203 is a continuation of Ser. No. 635,122 filed Nov. 25, 1975, now abandoned, which is in its turn a continuation of Ser. No. 547,602 filed Feb. 6, 1975 now abandoned. Ser. No. 811,191 is a continuation of Ser. No. 635,123 filed Nov. 25, 1975, now abandoned, which is in turn a divisional of Ser. No. 547,602, now abandoned.
US Referenced Citations (4)
Non-Patent Literature Citations (1)
Entry |
Anslov et al, "Biochemical Journal", vol. 28, pp. 1253-1263, 1928. |
Divisions (2)
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Date |
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158825 |
Jun 1980 |
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Parent |
547602 |
Feb 1975 |
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Continuations (4)
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920969 |
Jun 1978 |
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Parent |
635122 |
Nov 1975 |
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Parent |
547602 |
Feb 1975 |
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Parent |
635123 |
Nov 1975 |
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Continuation in Parts (1)
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811203 |
Jun 1977 |
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