C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
31/79, 134/3.4
C11D 3/33 (2006.01) C02F 5/12 (2006.01) G03C 5/305 (2006.01)
Patent
CA 1236969
-?- ABSTRACT A sequestering agent useful in chelation of calcium and/or magnesium ions in aqueous solution com- prises by weight from 2 percent to 20 percent iminodi acetic acid or a water-soluble salt thereof and from 98 percent to 80 percent of nitrilotriacetic acid or a water-soluble salt thereof. The sequestering agents of the invention are particularly useful as detergent builders.
467436
Smart & Biggar
The Dow Chemical Company
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