Chelating composition
US6103686A · kind A · utility
17Cited by
8References
8Claims
0Family size
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Inventors
Key dates
| Filing date | Jul 16, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Jul 16, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/33
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A chelating composition containing an aliphatic polycarboxylic acid of the following formula (I): ##STR1## wherein A is an imino group or an oxygen atom, R is a hydrogen atom or a hydroxyl group, and n is 0 or 1, or the salt thereof and sugar or saccharic acid of 4 to 12 carbon atoms at such a ratio as enables the components to manifest synergistic effects is provided. This chelating composition is capable of effectively sequestering a metal ion and preventing the metal ion from being insolubilized without causing pollution of the environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.