C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
134/39
C11D 7/22 (2006.01) C09K 7/02 (1980.01)
Patent
CA 1097555
ABSTRACT OF THE DISCLOSURE Copolymers of acrylic acid and methacrylic acid are disclosed which are capable of stabilizing calcium and barium salts under conditions of high pH and elevated temperatures. They are particu- larly useful for treating waters used in the secondary recovery of petroleum.
286450
Stanford James R.
Watson James D.
Nalco Chemical Company
Smart & Biggar
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