Claims
- 1. An aqueous solution which contains a sequestrant selected from the group consisting of:
- a. .alpha.,.alpha.'-carboxyalkoxy succinic acid, wherein the carboxyalkoxy radicals contain from 2 to about 7 carbon atoms,
- b. water soluble salts of said acids; and
- c. mixtures of (a) and (b).
- 2. The aqueous solution of claim 1 wherein the amount of sequestrant ranges from about 10 parts per billion to about 50,000 parts per million.
- 3. The aqueous solution of claim 1 wherein the amount of sequestrant ranges up to about 500 parts per million.
- 4. The aqueous solution of claim 1 wherein said solution has a pH range of from about 7 to about 10.
- 5. The aqueous solution of claim 1 wherein said solution contains calcium or magnesium as the sequestered substance.
- 6. The method of sequestering sequesterable metal ions in an aqueous solution which comprises introducing into said solution a sequestrant composition selected from the group consisting of:
- a. .alpha.,.alpha.'-carboxyalkoxy succinic acid, wherein the carboxyalkoxy radicals contain from 2 to about 7 carbon atoms,
- b. water soluble salts of said acids; and
- c. mixtures of (a) and (b).
- 7. The method of claim 6 wherein the sequesterable metal ion is calcium or magnesium.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 153,816, filed June 16, 1971, entitled ".alpha.,.alpha.'-Carboxyalkoxy Succinic Acid Compounds as Detergent Builders and Sequestering Agents," now U.S. Pat. No. 3,784,486.
US Referenced Citations (3)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
153816 |
Jun 1971 |
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