CA2029073A1 - Scale control in aqueous systems - Google Patents
Scale control in aqueous systemsInfo
- Publication number
- CA2029073A1 CA2029073A1 CA 2029073 CA2029073A CA2029073A1 CA 2029073 A1 CA2029073 A1 CA 2029073A1 CA 2029073 CA2029073 CA 2029073 CA 2029073 A CA2029073 A CA 2029073A CA 2029073 A1 CA2029073 A1 CA 2029073A1
- Authority
- CA
- Canada
- Prior art keywords
- acid
- copolymer
- mixtures
- aqueous systems
- scale control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 abstract 4
- 229920001577 copolymer Polymers 0.000 abstract 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 2
- 239000000654 additive Substances 0.000 abstract 2
- 150000008064 anhydrides Chemical class 0.000 abstract 2
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 abstract 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 abstract 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 abstract 1
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 abstract 1
- 229920002125 Sokalan® Polymers 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 150000008052 alkyl sulfonates Chemical class 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- BXLLINKJZLDGOX-UHFFFAOYSA-N dimethoxyphosphorylmethanamine Chemical compound COP(=O)(CN)OC BXLLINKJZLDGOX-UHFFFAOYSA-N 0.000 abstract 1
- 229960003330 pentetic acid Drugs 0.000 abstract 1
- 239000004584 polyacrylic acid Substances 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A composition and process for preventing the deposition of scale and sludge in aqueous systems comprising adding to the system the combination of three or more additives selected from the group consisting of a) polyacrylic acid, copolymer of alkylsulfonate and malefic anhydride and mixtures thereof, b) hydroxy ethylidene diphosphonic acid, amino (trimethyl phosphonic acid), diethylenetriamine pentaacetic acid, and mixtures thereof, and c) copolymer of styrene sulfonate and malefic anhydride, copolymer of acrylic acid and acrylamide, poly(acrylic acid-co-hypophosphite) and mixtures thereof, and wherein the combination contains at least one additive selected from each of a), b) and c).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51228290A | 1990-04-20 | 1990-04-20 | |
| US512,282 | 1990-04-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2029073A1 true CA2029073A1 (en) | 1991-10-21 |
| CA2029073C CA2029073C (en) | 2000-12-12 |
Family
ID=24038452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2029073 Expired - Fee Related CA2029073C (en) | 1990-04-20 | 1990-10-31 | Scale control in aqueous systems |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU633717B2 (en) |
| CA (1) | CA2029073C (en) |
| NZ (1) | NZ235904A (en) |
| ZA (1) | ZA908729B (en) |
-
1990
- 1990-10-31 NZ NZ23590490A patent/NZ235904A/en unknown
- 1990-10-31 CA CA 2029073 patent/CA2029073C/en not_active Expired - Fee Related
- 1990-10-31 ZA ZA908729A patent/ZA908729B/en unknown
-
1991
- 1991-04-09 AU AU74222/91A patent/AU633717B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU633717B2 (en) | 1993-02-04 |
| CA2029073C (en) | 2000-12-12 |
| AU7422291A (en) | 1991-10-24 |
| ZA908729B (en) | 1991-12-24 |
| NZ235904A (en) | 1992-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |