USE OF COPPER-BASED COATINGS FOR CROPS UNDER GLASS COVERS, ANTIPHYTOPATHOGENIC COATING GLASS AND THE METHOD OF OBTAINING ANTIPHYTOPATHOGENIC COATINGS

20250083996

18/463598

September 08, 2023

A copper-based coatings that contain an additional element selected from titanium, zinc, and tin for cultivation under glass covers. In addition, an antiphytopathogenic coating glass for use as glass covers mainly in greenhouses for crops cultivation, as well as a method for producing coatings on a glass surface.

D.A.GLASS spolka z ograniczona odpowiedzialnoscia (Glogow Malopolski, PL)

1. A copper-based coatings for crops under glass covers comprising: titanium, zinc, or tin, and which are completed by oxygen from the obtained oxides, as antiphytopathogenic coatings the coating is use to eliminate phytopathogens such as: Pseudomonas syringae pv. tomato (IOR2146) and five fungal strains: Alternaria solani (IOR2046), Botrytis cinerea (IOR2235), Aspergillus fumigatus (KKP683), Fusarium oxysporum (IOR2129), Cladosporium fulvum (IOR824) Phytophthora infestans (IOR2276) belonging to the Chromista kingdom, the class Peronosporea.

2. An antiphytopathogenic coating glass having a glass pane with a sputtered coating, the sputtered coating containing: copper in the amount of 10-90% and one of: titanium in the amount of 0.5-15%, zinc in the amount of 3-28%, tin in the amount of 1-20%, wherein the sputtered coating content is completed by an oxygen arising from obtained in process oxides.

3. The antiphytopathogenic coating glass according to claim 2, wherein the sputtered coating is applied to raw glass that is not chemically treated, and to diffused glass that is chemically treated glass.

4. The antiphytopathogenic coating glass according to claim 2, wherein sputtered coating has an antiphytopathogenic effect of 1 to 8 decimal logarithms against phytopathogens in the form of bacteria such as Pseudomonas syringae, fungi like Alternaria solani, Cladosporium fulvum, Botrytis cinerea, Fusarium oxysporum, Chromista like Phytophthora infestans both present on the surface of coated glass and floating in the circulating air.

5. The antiphytopathogenic coating glass according to claim 2, wherein the sputtered coating reduces an average direct light transmittance measured in the Vis range of 400 to 700 nm (according to the NEN 2675:2018 Greenhouse glass) by a maximum of 1.0% compared to the base glass.

6. The antiphytopathogenic coating glass according to claim 2, wherein the sputtered coating reduces an average hemispherical transmittance measured (according to NEN 2675:2018 Greenhouse glass) by a maximum of 1.0% compared to base glass.

7. The antiphytopathogenic coating glass according to claim 2, wherein the sputtered coating has a high durability confirmed by abrasion tests.

8. The antiphytopathogenic coating glass according to claim 2, wherein the sputtered coating is resistant to corrosion in the form of salt mist according to ISO 9227 under the following conditions: 25° C., 36 h in NaCl fog (pH=7).

9. A method for obtaining antiphytopathogenic coatings on a glass pane surfaces, the method comprising the steps of: placing the glass pane surface on rollers of an feeder; transporting the glass pane surface to an initial vacuum chamber, wherein an initial vacuum is generated; transporting the lass pane surface of the orevious step to a process vacuum chamber; wherein the initial vacuum chamber has a preliminary vacuum of 1.0·10−1 Pa; wherein the process vacuum chamber produces a process vacuum of 1.1·10−1 to 7.6.10−2 Pa.; Nextly, the reactive gas of 100-900 cm3/min is dosed and the impulse DC power supply is switched on; Wherein the methotid runs with an electrical current intensity of 30-45 A, an effective power 4.5-8.7 kW, and a circulating power 1.1-4.5 kW in the magnetic field generated in the chamber; wherein a moving speed is set to 1.9-9.2 m/min and the glass pane surface transported through a first magnetron of the process chamber with a glowing plasma using at least a two-component target, wherein the first component is copper; wherein the method produces a transparent coating layer with a thickness of 10-60 nm.

10. The method according to claim 9, wherein the copper is selected from Cu90Zn10, Cu80Ti20, or Cu90Sn10.

11. The method according to claim 9, wherein the coating is made after passing the magnetron once or twice.

12. The method according to claim 9, wherein the coating is obtained at low reactive gas contents between 100 and 300 cm3.

13. The method according to claim 9, wherein the coating is obtained on glass of various thicknesses between 3 and 18 mm.

14. The method according to claim 9, wherein the coating is obtained on non-tempered and thermally tempered as well as semi-tempered glass.

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