Water system component
US-2022009806-A1 · Jan 13, 2022 · US
Antifungal/antibacterial hydrophilic coating
US11746241B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11746241-B2 |
| Application number | US-202016742666-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 14, 2020 |
| Priority date | Jan 14, 2020 |
| Publication date | Sep 5, 2023 |
| Grant date | Sep 5, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Disclosed herein is a hydrophilic coating that includes an adhesive agent; an insolubilizer for insolubilizing the adhesive agent; titanium dioxide; and a metal oxide selected from the group consisting of silver oxide, copper oxide, iron oxide, magnesium oxide, and combinations thereof. The hydrophilic coating is useful on the heat transfer surfaces of a condensing heat exchanger.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for coating heat transfer surfaces of a condensing heat exchanger comprising applying a coating slurry comprising an adhesive agent; an insolubilizer for insolubilizing the adhesive agent; titanium dioxide; and a metal oxide selected from the group consisting of silver oxide, copper oxide, iron oxide, magnesium oxide, and combinations thereof to form a coating; and curing the coating; wherein curing the coating comprises heating the coating to 175 to 185° C. for 20 to 40 minutes, raising the temperature to 190 to 210° C. for 60 minutes, then increasing the temperature to 215 to 225° C. for 30 minutes, then increasing the temperature to 245 to 255° C., then increasing the temperature to 290 to 310° C. for 60 minutes, and finally maintaining the temperature at about 490 to 510° C. for 2 hours. 2. The method of claim 1 , wherein the metal oxide is selected from the group consisting of silver oxide, copper oxide and combinations thereof. 3. The method of claim 1 , wherein the metal oxide is silver oxide. 4. The method of claim 1 , wherein the adhesive agent comprises potassium silicate and the insolubilizer comprises zinc oxide. 5. The method of claim 1 , wherein the titanium dioxide is present in an amount of 10 to 15% by weight, based on the total weight of the coating slurry. 6. The method of claim 1 , wherein the adhesive agent is present in an amount of 10 to 30% by weight, based on the total weight of the coating slurry. 7. The method of claim 1 , wherein the insolubilizer is present in an amount of 2 to 8% by weight, based on the total weight of the coating slurry. 8. The method of claim 1 , wherein the metal oxide is present in an amount of 2 to 10% by weight, based on the total weight of the coating slurry. 9. The method of claim 1 , wherein the titanium dioxide, insolubilizer and metal oxide have an average particle size of 6 to 14 microns.
Assignees
Inventors
Classifications
- C09D1/00Primary
Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances · CPC title
inorganic · CPC title
Particle size larger than 1000 nm · CPC title
- F28F13/182Primary
especially adapted for evaporator or condenser surfaces (F28F13/187 takes precedence) · CPC title
hydrophilic · CPC title
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Frequently asked questions
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- What does patent US11746241B2 cover?
- Disclosed herein is a hydrophilic coating that includes an adhesive agent; an insolubilizer for insolubilizing the adhesive agent; titanium dioxide; and a metal oxide selected from the group consisting of silver oxide, copper oxide, iron oxide, magnesium oxide, and combinations thereof. The hydrophilic coating is useful on the heat transfer surfaces of a condensing heat exchanger.
- Who is the assignee on this patent?
- Hamilton Sundstrand Corp
- What technology area does this patent fall under?
- Primary CPC classification C09D1/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 05 2023 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).