Claims
- 1. A method of inhibiting the precipitation of scale forming salts, including calcium carbonate and calcium sulfate in an aqueous boiler system comprising adding to said boiler system an effective amount of a composition comprising: (a) a homopolymer of acrylic acid having a molecular weight of about 1,500 to about 3,000, as determined by gel permeation chromatography; and (b) a homopolymer of acrylic acid having a molecular weight of about 7,000 to about 15,000, as determined by gel permeation chromatography; wherein the ratio of (a):(b) is about 1:1 by weight, and wherein the weight average molecular weight of said composition ranges from about 4,000 to about 7,000.
Parent Case Info
This is a continuation of application Ser. No. 122,988, filed Nov. 19, 1987, now abandoned, which is a continuation of Ser. No. 897,189, filed on Aug. 15, 1986, now abandoned.
US Referenced Citations (22)
Foreign Referenced Citations (1)
Number |
Date |
Country |
89654 |
Sep 1983 |
EPX |
Continuations (2)
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Number |
Date |
Country |
Parent |
122988 |
Nov 1987 |
|
Parent |
897189 |
Aug 1986 |
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