Claims
- 1. Method of inhibiting deposition of clay, silt, and ferric oxide particulate material in an aqueous cooling system containing said particulate material and at least 300 ppm calcium hardness comprising adding to the system at least about 5 ppm of a copolymer of 25 to 50 mole percent methacrylic acid and 50 to 75 mole percent acrylamide, said copolymer having a molecular weight of about 5,000.
- 2. Method according to claim 1 in which the mole ratio of methacrylic acid to acrylamide is about 1:1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8036932 |
Nov 1980 |
GBX |
|
Parent Case Info
This is a continuation of application Ser. No. 263,317, filed May 13, 1981, now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (5)
Number |
Date |
Country |
848400 |
Aug 1970 |
CAX |
863295 |
Feb 1971 |
CAX |
2061249 |
May 1981 |
GBX |
298540 |
May 1974 |
SUX |
0768765 |
Oct 1980 |
SUX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
263317 |
May 1981 |
|