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US 9,850,453 B2Granted
Aqueous solutions containing a complexing agent in high concentration
AssigneeBASF SE
InventorsMarkus Christian Biel, Thomas Greindl, Markus Hartmann, Wolfgang Staffel, Marta Reinoso Garcia
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Abstract
Aqueous solution comprising (A) in the range of from 30 to 60% by weight of a complexing agent, selected from the alkali metal salts of methylglycine diacetic acid and the alkali metal salts of glutamic acid diacetic acid, (B) in the range of from 1 to 25% by weight of at least one salt of a sulfonic acid or of an organic acid, percentages referring to the total respective aqueous solution.
Claims20
An aqueous solution, comprising:
- (A) from 30 to 60% by weight of a complexing agent, which is selected from the group consisting of an alkali metal salt of methylglycine diacetic acid and an alkali metal salt of glutamic acid diacetic acid, and
- (B) from 1 to 25% by weight of at least one salt of a sulfonic acid or of an organic acid,
- based on a total weight of the aqueous solution,
- wherein the aqueous solution is free from surfactants,
- wherein the aqueous solution has a total solids content from 31 to 65% by weight, and wherein a pH of the aqueous solution is from 9 to 14.
2 more elements
Dependencies are inferred from the claim text.