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US-10035977-B2 · Jul 31, 2018 · US
Concentrated aluminum compositions for aqueous corrosion control
US11982003B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11982003-B2 |
| Application number | US-202017437716-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 27, 2020 |
| Priority date | Mar 30, 2019 |
| Publication date | May 14, 2024 |
| Grant date | May 14, 2024 |
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- Title
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Abstract
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A composition for corrosion control in aqueous systems, the composition providing a formulation of a concentrated aluminum corrosion inhibitor; and (i) a polycarboxylic acid polymer, (ii) a sulfonic acid polymer, (iii) a combination of a polycarboxylic acid and a polysulfonic acid, (iv) an organic phosphonate, (v) a combination of a phosphonate and a polycarboxylic acid, or (vi) a combination of a phosphonate and a polysulfonic acid. A method for corrosion control in aqueous systems, the method providing a concentrated formulation, the concentrated formulation having an aluminum corrosion inhibitor and (i) a polycarboxylic acid polymer, (ii) a sulfonic acid polymer, (iii) a combination of a polycarboxylic acid and a polysulfonic acid, (iv) an organic phosphonate, (v) a combination of a phosphonate and a polycarboxylic acid, or (vi) a combination of a phosphonate and a polysulfonic acid; and delivering the concentrated formulation to an aqueous stream.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition for corrosion control in aqueous systems, the composition comprising a formulation of: an aluminum corrosion inhibitor, the aluminum corrosion inhibitor comprising (i) an aluminum sulfate present at a concentration of approximately 0.1-2 wt % actives, or (ii) a sodium aluminate present at a concentration of approximately 0.1-2 wt % actives; and (i) a polycarboxylic acid polymer, (ii) a sulfonic acid polymer, (iii) a combination of a polycarboxylic acid and a polysulfonic acid, (iv) an organic phosphonate, (v) a combination of a phosphonate and a polycarboxylic acid, or (vi) a combination of a phosphonate and a polysulfonic acid, wherein the pH of the formulation is (a) less than 4, or (b) greater than 10. 2. The composition as recited in claim 1 , wherein the aluminum corrosion inhibitor comprises complexes of (i) citrate and aluminum, (ii) saccharic acid and aluminum, or (iii) aluminum and gluconate. 3. The composition as recited in claim 1 , wherein the formulation comprises a polymaleic acid, polycarboxylic sulfonic acid, polyacrylic acid, hydroxyacids, phosphonocarboxylic acids, polyhydroxysuccinic acids, polymaleic anhydride, phosphonates, 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, 2-Phosphonobutane-1,2,4-tricarboxylic acid, amino alkylene phosphonic acids, polymers featuring one monomeric group with a phosphonic acid, and/or combinations thereof. 4. The composition as recited in claim 3 , wherein the formulation comprises (i) a polycarboxylic sulfonic acid polymer, or (ii) a polymaleic acid/polycarboxylic sulfonic acid polymer blend. 5. The composition as recited in claim 1 , wherein the formulation comprises a polycarboxylic acid, and the polycarboxylic acid polymer is present at a concentration of about 3 to about 50 wt % polymer actives. 6. The composition as recited in claim 5 , wherein the concentration ratio of the aluminum corrosion inhibitor to the polycarboxylic acid polymer is greater than about 1:100. 7. A composition for corrosion control in aqueous systems, the composition comprising a formulation of: an aluminum corrosion inhibitor, the aluminum corrosion inhibitor comprising (i) an aluminum sulfate present at a concentration of approximately 0.1-2 wt % actives, or (ii) a sodium aluminate present at a concentration of approximately 0.1-2 wt % actives; and one or more of (i) a polycarboxylic acid polymer, (ii) a sulfonic acid polymer, (iii) a combination of a polycarboxylic acid and a polysulfonic acid, (iv) an organic phosphonate, (v) a combination of a phosphonate and a polycarboxylic acid, or (vi) a combination of a phosphonate and a polysulfonic acid, wherein the pH of the formulation is (a) less than 4, or (b) greater than 10.
Assignees
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Classifications
- C23F11/182Primary
Sulfur, boron or silicon containing compounds · CPC title
- C02F5/105Primary
combined with inorganic substances · CPC title
combined with inorganic substances · CPC title
Water in cooling circuits · CPC title
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- What does patent US11982003B2 cover?
- A composition for corrosion control in aqueous systems, the composition providing a formulation of a concentrated aluminum corrosion inhibitor; and (i) a polycarboxylic acid polymer, (ii) a sulfonic acid polymer, (iii) a combination of a polycarboxylic acid and a polysulfonic acid, (iv) an organic phosphonate, (v) a combination of a phosphonate and a polycarboxylic acid, or (vi) a combination o…
- Who is the assignee on this patent?
- Bl Technologies Inc
- What technology area does this patent fall under?
- Primary CPC classification C23F11/182. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 14 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).