C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 5/10 (2006.01) C02F 1/68 (2006.01) C11D 3/22 (2006.01)
Patent
CA 2406382
The invention relates to a method for sequestering metal ions at a low pH. Surprisingly, it has been found that certain fructan polycarboxylic acids, as opposed to the generally used sequestering agents, are capable of complexing metal ions in an efficient manner at a pH lower than 6. Additionally, the invention relates to a cleaning composition containing a fructan polycarboxylic acid as sequestering agent.
La présente invention concerne un procédé de séquestration d'ions métalliques à un pH faible. D'une manière surprenante, il a été montré que certains acides polycarboxyliques de fructosane peuvent complexer les ions métalliques de manière efficace à un pH inférieur à 6, contrairement aux agents séquestrants généralement utilisés. L'invention concerne en outre des compositions nettoyantes contenant un acide polycarboxylique de fructosane comme agent séquestrant.
Kuzee Hendrika Cornelia
Raaijmakers Henricus Wilhelmus Carolina
Borden Ladner Gervais Llp
Koninklijke Cooperatie Cosun U.a.
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