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Title:
THE DEVELOPMENT OF A HYDROPHOBIC SOLUTION COMPRISING BORON NITRIDE
Document Type and Number:
WIPO Patent Application WO/2024/080947
Kind Code:
A1
Abstract:
The invention relates to the development of a hydrophobic and antibacterial coating material comprising boron nanomaterial.

Inventors:
DAYAN SERKAN (TR)
TOYDEMİR TUNCAY (TR)
ÇAM FATIH (TR)
Application Number:
PCT/TR2022/051711
Publication Date:
April 18, 2024
Filing Date:
December 30, 2022
Export Citation:
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Assignee:
T C ERCIYES UENIVERSITESI (TR)
ORTA ANADOLU TICARET VE SANAYI ISLETMESI T A S (TR)
International Classes:
D06B9/00; C01B21/064
Domestic Patent References:
WO2017213596A12017-12-14
Foreign References:
CN210886735U2020-06-30
CN106758167A2017-05-31
Attorney, Agent or Firm:
YALCINER, Ugur G. (YALCINER PATENT & CONSULTING LTD.) (TR)
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Claims:
CLAIMS

1. A composition, characterized in that it comprises;

• metal nitride and/or metal oxide nanoparticles with antibacterial and hydrophobic properties,

• at least one dispersing agent that disperses nanoparticles,

• at least one surfactant that provides stabilization of nanoparticles.

2. A composition according to claim 1, characterized in that said metal nitride and/or metal oxide nanoparticles are boron nitride nanoparticles.

3. A composition according to claim 2, characterized in that the boron nitride nanoparticles are smaller than 100 nm.

4. A composition according to claim 2, characterized in that the boron nitride nanoparticles are hexagonal (h-BN).

5. A composition according to claim 1, characterized in that said dispersing agent is dodecan-l-ol.

6. A composition according to claims 1 or 5, characterized in that the weight ratio of nanoparticles is 1.75% w/v in the dispersing agent.

7. A composition according to claim 1, characterized in that said surfactant is oil acid or acrylic acid derivatives.

8. A composition according to claims 1 or 6, characterized in that said surfactant is oleic acid.

9. A coating material, characterized in that it comprises a composition according to any one of the preceding claims.

Description:
THE DEVELOPMENT OF A HYDROPHOBIC SOLUTION COMPRISING BORON

NITRIDE

Technical Field Related to the Invention

The present invention relates to the development of a hydrophobic material comprising boron nanomaterials. Within the scope of the invention, a material with hydrophobic properties and a material with antibacterial properties are offered for use in combination by creating an antibacterial and water-repellent coating for textile products with a boron structure that can be produced from domestic boron mines.

State of the Art Related to the Invention (Background)

The areas of use of boron minerals are increasing each day and they are frequently used in existing industrial areas. Boron, which addresses a wide range of applications from solar cells to protection layers in technological materials, also stands out with its specific basic properties. In recent years, with the increasing importance of anti-bacterial protection, the use of boron ingredients in combination with silver materials has been observed to increase. These materials, which also have different properties, can have water repellent or oil repellent effects. Coatings have become increasingly important, from cell phone screen technologies to textile materials. Especially the development of water repellent textile materials has become a preferred application due to their ease of use in many areas. Currently used water-repellent coatings have some limiting physicochemical and microbiological effects, as well as some toxic effects in the long term. The idea of alternative applications where these limiting features are eliminated has gained importance in recent years.

Brief Description and Objects of the Invention

Within the scope of the said invention, an antibacterial and water repellent coating for textile products can be created using a boron structure that can be produced from domestic boron mines. Thus, the development of a material with a high localization rate from the raw material source to the final product will become possible and a material with hydrophobic properties and a material with anti-bacterial properties will also be offered for use in combination. This mixture of materials can be coated on the material deemed appropriate as a suspended solution using spray, immersion, or doctor blade (scraping) methods. In existing systems, there is no precedent product that is both boron-sourced and offers the two features in combination. It is anticipated that the invention will be demanded in the market and will provide added value to the Turkish economy as it is both functional (antibacterial and water repellent) and sustainable.

Detailed Description of the Invention

The components of the hydrophobic and antibacterial material of the invention, the properties of these components, and the method of preparation are detailed below.

BORON NITRIDE (1 mmol): It is used as the main material with its water repellent and antibacterial coating agent properties. Although boron nitride structures with different properties and crystal structures can be used, hexagonal boron nitride (h-BN) is preferably used in the invention. Boron nitride is preferred due to its hydrophobic and antibacterial properties.

OLEIC ACID (5 mmol): It is used as a hydrophobic (water repellent) property enhancer and as a material surrounding the boron nitride compound. In alternative embodiments of the invention, 2-propenoic acid can also be used in the same proportions. The main reason for preferably using oleic acid is to increase hydrophobicity. Oleic acid, which is water repellent at the molecular level, is placed around the boron nitride material to improve its water repellency capacity and persistence since the water repellency of boron nitride alone does not reach the desired levels. In alternative embodiments of the invention, several oil acids or acrylic acid derivatives can be used to increase the water repellency of boron nitride. n-HEXANE (10 ml): It is used as a solvent. Although dodecan-l-ol can also be used in the same proportions in an alternative embodiment of the invention, n-hexane is preferably used in the said embodiment. In the experiment to prepare the hydrophobic and antibacterial material of the invention, 1 mmol boron nitride (hexagonal (h-BN)) is added to the reactor with 10 ml n-hexane (or dodecan-l-ol) and stirred at 800 rpm for 5 min with a heated magnetic stirrer. 5 mmol oleic acid (or 2-propenoic acid) is added to it and the reaction is refluxed for 1 hour. At the end of the process, the heater is turned off and the mixture continues to mix until it reaches room temperature. The resulting mixture is then centrifuged for 15 minutes, and the resulting boron nanoparticles are dried in an oven at 50°C. The material comprising these boron nanoparticles is referred to as Hydrophobe-modified-BN. This procedure can also be performed using other metal nitrides and metal oxides. Alternative or hybrid designs to the invention can also be created with metal nitrites such as vanadium nitride, zirconium nitride, aluminum nitride, etc., and derivatives such as modified silicon oxide, modified aluminum oxide, etc. Although most of these alternatives can be hydrophobic, there is no clear expression for their anti-bacterial properties. The produced nanoparticles (Hydrophobe-modified-BN) are dispersed in distilled water / dodecan-l-ol mixture (99/1) (1.75% w/v or different ratios depending on the area of use) and made into a homogeneous mixture. This ratio can be varied to obtain mixtures with different properties or depending on the usage in the application areas. It can then be applied to the intended surface from a distance of 10 cm using a spray gun. The application (coating) process can also be performed by immersion or scraping, and the product can be fixed or coated on the intended surface and chemical hardeners can be used in this process.

The resulting mixture provides a hydrophobic coating comprising boron nitride, which is known to have antibacterial properties in textile products in different usage amounts.