Method for inhibiting hydrolysis of polyacrylamide

Details Method for inhibiting hydrolysis of polyacrylamide Method for inhibiting hydrolysis of polyacrylamide

C - Chemistry, Metallurgy

08

L

C08L 33/26 (2006.01) C08F 8/12 (2006.01)

Patent

CA 2086597

2086597 9207881 PCTABS00013 Aqueous solutions of partially hydrolyzed polyacrylamide are storable by adjusting and maintaining solution pH from about 3.5 to about 6.8 prior to storage. Storage at a pH above 6.8 or below 3.5 results in hydrolysis. The desired solution pH is achieved by addition of appropriate mineral acids or bases or by the addition of buffer systems with pKa values of about 3.5 to about 6.8.

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