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US 5,472,642 AGranted
Diaminoalkyl di(sulfosuccinates) and their use as builders
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsEddie N. Gutierrez, Shang-Ren Wu
Life of this patent
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Abstract
Diaminoalkyl di(sulfosuccinate) compounds useful as builders are disclosed together with a method for their preparation and detergent compositions for their use.
Claims7
Diaminoalkyl di(sulfosuccinate) compounds of the formula:
- ##STR6## wherein M is alkali or alkaline earth metal or a mixture;
- and R.sub.1 is either present or absent and when present is CH.sub.2 or CHOH and R.sub.2 is H, when
- R.sub.1 is not present R.sub.2 is methyl or hydrogen.
A method for chelating alkaline earth metal ions comprising contacting said ions with a diaminoalkyl di(sulfosuccinate) of the formula:
- ##STR7## wherein M is alkali or alkaline earth metal or a mixture;
- and R.sub.1 is either present or absent and when present is CH.sub.2 or CHOH and R.sub.2 is H, when
- R.sub.1 is not present R.sub.2 is methyl or hydrogen.
A detergent composition comprising 2-98% of an anionic, nonionic, zwitterionic or cationic surfactant and 0.1 to 75% of a diaminoalkyl di(sulfosuccinate) of the formula:
- ##STR8## wherein M is alkali or alkaline earth metal or a mixture;
- and R.sub.1 is either present or absent and when present is CH.sub.2 or CHOH and R.sub.2 is H, when
- R.sub.1 is not present R.sub.2 is methyl or hydrogen.
Dependencies are inferred from the claim text.