C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
31/43
C23F 11/18 (2006.01) C02F 5/10 (2006.01) C23F 11/08 (2006.01)
Patent
CA 1214630
Water treatment composition Abstract of Disclosure A composition for inhibiting the corrosion and scale forming tendencies of water or an aqueous system comprises 2.5 to 80 % by weight of zinc (calculated as Zn++) and from 97.5 to 20 % by weight of a hydrolysed copolymer of maleic anhydride with a mono-ethylenically unsaturated monomer or a mixture of monomers, the molar ratio of maleic anhydride to the total of other monomers being from 1:1 to 100:1, the molecular weight of the compolymer being up to 1000.
451479
Reverter John A.
Wilson David
Ag Ciba-Geigy
Fetherstonhaugh & Co.
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