CA1148438A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Use of acrylic acid/sodium vinyl-sulfonate copolymers as dispersants in boiler applications
Assignee: ChampionX LLC
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Filing: 1981-05-13
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Granted: 1983-06-21
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Expires: 2001-05-13
Abstract
Abstract ABSTRACT OF THE DISCLOSURE Copolymers of acrylic acid, or the alkali metal or ammonium salts thereof, and alkali metal vinylsulfonate find great utility as dispersants and stabilizers for finely divided inorganic scale-forming constituents in industrial water systems, particularly as additives to boiler water. The polymers have a molecular weight of from 750 to 50,000.
Inventors
- 👤 Manuel Slovinsky
- 👤 Kenneth E. Visek
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-08 13:42
CPC Classifications
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Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A method of dispersing and suspending finely divided inorganic particulate scale forming constituents in industrial water handling systems which comprises adding to the water from 0.05 to 5.0 ppm of a copolymer based on ppm hardness in the water system, said copolymer being a copolymer of acrylic acid or its alkali metal or ammonium salts and an alkali vinylsulfonate having a molecular weight of from 750 to 50,000,said copolymer containing from 10 to 90 mole percent of acrylic acid based units.
Claim 2
Independent Claim
81 words
A method of dispersing and suspending finely divided inorganic particulate scale forming constituents in industrial water handling systems which comprises adding to the water from 0.05 to 5.0 ppm of a copolymer based on ppm hardness in the water system, said copolymer being a copolymer of acrylic acid or its alkali metal or ammonium salts and an alkali vinylsulfonate having a molecular weight of from 750 to 50,000,said copolymer containing from 10 to 90 mole percent of acrylic acid based units.
Claim 3
Dependent Claim
23 words
The method of Claim 1 wherein the copolymer of acrylic acid and alkali metal vinylsulfonate has a molecular weight of 900 to 15,000.
Claim 4
Dependent Claim
23 words
The method of Claim 1 wherein the copolymer of acrylic acid and alkali metal vinylsulfonate has a molecular weight of 1,000 to 6,000.
Claim 5
Dependent Claim
27 words
The method of Claim 1 wherein the copolymer of acrylic acid and alkali metal vinylsulfonate contains from 60 to 80 mole percent of acrylic acid based units.
Claim 6
Dependent Claim
16 words
The method of Claim 1 wherein the industrial water handling system is a boiler water system.
Claim 7
Dependent Claim
13 words
The method of Claim 2 wherein the alkali metal vinylsulfonate is sodium vinylsulfonate.
Claim 8
Dependent Claim
23 words
The method of Claim 1 wherein .1 - .4 ppm of the copolymer is added based on ppm hardness in the water system.
Claim 9
Dependent Claim
55 words
A composition for treating industrial water systems which comprises an aqueous solution of a copolymer of acrylic acid, or the alkali metal or ammonium salts thereof and an alkali metal vinylsulfonate, the copolymer having a molecular weight of from 750 to 50,000, and containing from 10 to 90 mole percent of acrylic acid based units.
Claim 10
Dependent Claim
55 words
A composition for treating industrial water systems which comprises an aqueous solution of a copolymer of acrylic acid, or the alkali metal or ammonium salts thereof and an alkali metal vinylsulfonate, the copolymer having a molecular weight of from 750 to 50,000, and containing from 10 to 90 mole percent of acrylic acid based units.
Claim 11
Dependent Claim
23 words
The composition of claim 8 wherein the copolymer of acrylic acid and alkali metal vinylsulfonate has a molecular weight of 900 to 15,000.
Claim 12
Dependent Claim
23 words
The composition of claim 8 wherein the copolymer of acrylic acid and alkali metal vinylsulfonate has a molecular weight of 1,000 to 6,000.
Claim 13
Dependent Claim
27 words
The composition of claim 8 wherein the copolymer of acrylic acid and alkali metal vinylsulfonate contains from 60 to 80 mole percent of acrylic acid based units.
References Cited (Backward Citations)
No citation records indexed.
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