C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 5/14 (2006.01) C23F 11/10 (2006.01) C23F 11/167 (2006.01) C23F 11/173 (2006.01)
Patent
CA 2297013
This invention relates to scale and/or corrosion inhibiting compositions for aqueous systems comprising (a) polyaspartic acid, and (b) a water soluble phosphonated oligomer. The compositions are effective scale inhibitors and corrosion inhibitors, but are also advantageous from an environmental standpoint because they are non-toxic, contain no heavy metals, and have little or no phosphorus. They also have significant calcium/hardness tolerance and are chlorine/bromine stable.
Emerich Dwight E.
Kmec Pavol
Ashland Inc.
Ashland Licensing And Intellectual Property Llc
Gowling Lafleur Henderson Llp
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