The present invention generally relates to disinfectant, and particularly relates to a Disinfectant for display screen surfaces of electronic devices.
Background of the Invention:
The electronic device/gadgets such as mobile phone, pads, tablets or hand-held devices or like is an indispensable part of person's life, and the frequent contact of the electronic device with hands, mouth, skin or other things, dirt, dust, germs, sweat, saliva and other pollutants may inevitably adhered to the electronic devices, and when a large amount of pollutants are adhered to such electronic devices, they can become a source of infection/ disease, and therefore, cleaning of the electronic device is an indispensable requirement in personal hygiene.
Generally available options merely clean the electronic device/gadgets and fail to disinfect the same.
Several attempts have been made to provide a disinfectant that disinfects the electronic device/gadgets, but most disinfectant compositions that are commercially available are well suited to killing microorganisms on surfaces when applied. The efficacy of many disinfectant compositions, however, rapidly decreases after application. In particular, the disinfectant composition fails to remain on the surface for any length of time to provide a sustained efficacy. The disinfectant composition rapidly degrades, evaporates, or tends to be physically removed from the surface due to repeated touching or wiping with a cloth. As a result, if the surface becomes re-contaminated, the disinfectant composition must be reapplied in order to kill the newly deposited microorganisms. In view of the above, a need exists for a disinfectant composition that delivers fast initial antimicrobial kill and also provides long lasting protection and efficacy. A need also exists for a disinfectant composition capable of providing prolonged antimicrobial activity against microorganisms without affecting a surface or making the surface sticky to the touch. A need also exists for a disinfectant composition that is highly efficient against microorganisms without creating chemical build up on the surface.
Thus, there exists a need to provide a disinfectant for cleaning the electronic devices such as mobile, pads, tablets or hand-held devices that addresses one or more disadvantage as faced in the prior art.

Summary of the Invention:
This summary is provided to introduce a selection of concepts in a simplified format that are further described in the detailed description of the invention. This summary is neither intended to identify key or essential inventive concepts of the invention and nor is it intended for determining the scope of the invention.
Accordingly the present invention provides a disinfectant composition comprising ethanol, silica, propylene glycol methyl ether, benzalkonium chloride, silane compound, quarternary ammonium silane compound, antistatic agent, perfume and water.
In an embodiment of the invention, the disinfectant composition optionally comprises at least one of a resin film forming agent, acetic acid, and dodecyl dimethyl ammonium chloride.
In another embodiment of the invention, the ethanol is in the range of 97.55%-97.75% V/V.
In yet another embodiment of the invention, silica is in the form of colloidal silicate and is in a range of 0.05%-0.1% W/V and provides a nano-coating to the solution.
In still another embodiment of the invention, propylene Glycol Methyl ether is present in a range of 0.1%-0.3% W/V and functions as a solvent and cleanser.
In a further embodiment of the invention, benzalkonium chloride is in a range of 0.22%-0.25% W/V.
In a furthermore embodiment of the invention, the silane compound is a 3-Trimethoxysilyl PDOA and is present in a range of 0.70%-0.75% W/V and functions as nano-film former.
In another embodiment of the invention, the quarternary ammonium silane compound is in a range of 0.03%-0.35% W/V and functions as a fixative for antimicrobials for longer action.
In yet another embodiment of the invention, the antistatic agent is present in a range of 0.1%-0.2% W/V.
In still another embodiment of the invention, the perfume is present in a range of 0.1%-0.3% W/V that provides fragrance attribute to the disinfectant.
In a further embodiment of the invention, water functions as a solvent.

In a furthermore embodiment of the invention, the composition has a pH vale in a range of pH 5.5 to 7.0.
In an embodiment of the invention, the disinfectant is used on electronic devices flat screens, laptop screens, touch screens, displays, displays of mobile phones, smart phones, tablet PCs, PDAs and such devices.
To further clarify advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof.
Detailed Description of the Invention:
For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
It will be understood by those skilled in the art that the foregoing general description and the following detailed description are explanatory of the invention and are not intended to be restrictive thereof.
Reference throughout this specification to "an aspect", "another aspect" or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrase "in an embodiment", "in another embodiment" and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a device that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by "comprises... a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other

components or additional devices or additional sub-systems or additional elements or additional structures or additional components.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skilled in the art to which this invention belongs. The device, methods, and examples provided herein are illustrative only and not intended to be limiting.
The present invention provides disinfectant for display screen surfaces of electronic devices. The disinfectant comprises of ethanol, silica, propylene glycol methyl ether, benzalkonium chloride, silane compound, quarternary ammonium silane compound, an antistatic agent, perfume and water.
The disinfectant further optionally comprises at least one of a resin film forming agent, acetic acid, and dodecyl dimethyl ammonium chloride.
In an embodiment of the invention, the ethanol (95%) is present in the range of (97.55-97.75%) V/V and is adapted to provide instant anti-microbial cleaning properties.
In an embodiment of the invention, the silica is in the form of colloidal silicate and is in a range of (0.05%-0.1%) W/V.
In an embodiment of the present invention, the propylene glycol methyl ether is present in the range of (0.1-0.3%) W/V and is used as a solvent to clean the screen of the electronic devices.
In an embodiment of the invention, the benzalkonium Chloride is present in a range of (0.22-0.25%)) W/V. The benzalkonium Chloride functions as a disinfectant/antimicrobial.
In an embodiment of the invention, the silane compound is present in a range of (0.70-0.75%)) W/V functions as nano-film former.
In an embodiment of the invention, the quarternary ammonium silane compound present in a range of (0.030%>-0.35%>) W/V functions as a fixative for antimicrobials for longer action.
In an embodiment of the present invention, the antistatic agent is present in a range of (0.1%-0.2%) W/V.

In an embodiment of the present invention, the perfume is present in a range of (0.1%-0.3%) W/Vthat provides fragrance attribute to the disinfectant.
In an embodiment of the invention, the water functions as a solvent.
In an embodiment of the invention, the disinfectant is a clear liquid with a pH ranges between
5.5-7.0.
In an embodiment of the invention, the composition comprises acetic acid functions as a catalyst and the dodecyl dimethyl ammonium chloride provides antimicrobial properties.
In an embodiment of the present invention, the compounds providing antimicrobial activity include but not limited to ethanol, benzalkonium Chloride, dodecyl dimethyl ammonium chloride etc.
In an embodiment of the invention, the disinfectant leads to the killing of yeasts, fungi and bacteria.
In an embodiment of the invention, the disinfected is used on the screen surfaces of electronic devices are in particular the screen surfaces of touch screens, mobile phones, smartphones, flat screens, laptop screens, tablet PCs and PDAs, in particular the displays or touch screens or the protective films applied to these devices are disinfected.
In an embodiment of the present invention the disinfectant kills 99.9% Bacteria &Viruses and gives upto 24 hours protection with the help of the present active nano technology.
Advantages of the present invention:
• The present invention not only deliver fast initial antimicrobial kill over a broad spectrum of microorganisms, but also provide antimicrobial activity over an extended length of time. In an embodiment of the invention, it may provide protection to electronic devices/gadgets for almost 24 hrs against multiple touches.
• Of particular advantage, the thin coating or film formed on the surface is clear, non-tacky, and relatively invisible.
• The disinfectant composition is resistant to chemical build up over time allowing for repeated use of the composition on the same surface.

• The disinfectant is highly efficient to provide a minimum amount of the anti¬microbial agent can be used to save cost and to avoid or reduce any possible adverse effects caused by the antimicrobial agent.
Example 1:
A disinfectant composition is prepared as per Table 1 provided below.
Table 1: Composition of disinfectant for display screen surface of electronic device

Sr. No. RMNAME %
1 Ethanol 95% (Ethyl Alcohol) IP 97.55 % V/V
2 IMP (Colloidal Silica) 0.05 %W/V
3 Propylene glycol methyl ether 0.1% W/V
4 Benzalkonium Chloride 80% 0.22% W/V
5 Nano 10 Concentrate (Quaternary Ammonium Silane compound -Fixate) 0.30 %W/V
6 3-Trimethoxysilyl PDOA Concentrate (Silane compound) 0.70% W/V
7 Crodastat-400 (antistatic agent) 0.1- 0.2% W/V
8 Perfume 0.1 %W/V
9 Water Remaining
The disinfectant composition as prepared above has the properties as mentioned in Table 2. Table 2: Properties of the disinfectant for display screen surface of electronic device

Sr.
No. Parameter UOM Specification
1 Appearance NA Clear liquid
2 Colour NA Colourless to pale yellow
3 Odour NA Characteristic Odour match with STD.
4 pH@25°C (as such) NA 5.5 -7.0
5 Sp eci fi c gravity @2 5 °C NA 0.8050-0.8300

6 Assay of Alcohol Content (95%) IP % (87.975 - 107.525)% v/v on 95%
basis (83.573 -102.146)% v/v on 100%
basis
(90.0 - 110.0)% of label Claim
7 Benzalkonium Chloride (80%) % 0.225 to 0.275 % w/v (90.0 to 110.0 % of label Claim)
8 Upper turbidity limit(>80°C) NA No turbidity
9 Lower turbidity limit(<5°C) NA No turbidity
The disinfectant composition as prepared above is tested for stability tests and outcome of the stability tests post production (taken as 0 week) and post 1 week are provided in Table 3.
Table 3: Stability tests post production and post 1 week
Test interval: WeekO (11.10.2021) Wee kl (19.10.21)
Temperature condition: Cool Rt Hot Cool Rt Hot
Relative humidity: 5°C 25 ± 2°C 40
°c,
75 % 5°C 25 ± 2°C 40°C
75%
Proc uct testing:
Test process: Method Limits
Appearance: Visual Homog enous OK OK OK OK
Colour: Visual Colourl
ess OK OK OK OK
Odour: Characteri stic Charact eristic OK OK OK OK
PH @ 25 °C 5.5-7.0 6.2 6.3 6.42 6.26
Specific
gravity @ 25
°C 0.8050 0.8300 0.81 46 0.81 40 0.8138 0.81 36
Bkc / qac content (total) 0.480-0.500 0.49 50 0.50 0 0.498 0.49 8
Utl Visual Should be clear OK OK OK OK

Ltl Visual Should be clear OK OK OK OK
Container testing Visual Should be clear OK OK OK OK
The disinfectant composition as prepared above is tested for stability tests and outcome of the stability tests post 2 weeks and 4 weeks are provided in Table 4.
Table 4: Stability testing of disinfectant on 2 week and 4 week

Test interval: Week 2(27.10.21) Week 4 (11.1 1.21)
Temperatur e condition: Cool Rt Hot Cool Rt Hot
Relative humidity: 5°C 25 ± 2°C 40°C, 75% 5°C 25 ± 2°C 40°C
75%
Product testing:
Test process: Method Limits
Appearance Visual Homoge nous OK OK OK OK OK OK
Colour: Visual Colourle
ss OK OK OK OK OK OK
Odour: Characteri stic Characte ristic OK OK OK OK OK OK
PH @ 25 °C 5.5 -7.0 6.15 6.32 6.2 6.29 6.29 6.2
Specific gravity @
25 °C 0.8050-0.8300 0.8132 0.81
32 0.813
2 0.81 16 0.81 16 0.81 16
Bkc / qac content (total) 0.480-0.500 0.493 0.49 0 0.484 0.49 8 0.49 3 0.49 1
Utl Visual Should be clear OK OK OK OK OK OK
Ltl Visual Should be clear OK OK OK OK OK OK
Container testing Visual Should be clear OK OK OK OK OK OK

The disinfectant composition as prepared above is tested for stability tests and outcome of the stability tests post 8 weeks and 16 weeks are provided in Table 5.
Table 5: Stability testing of disinfectant on 8 week and 16 week.

Test interval: Week 8 (11.12.21) Week 12(10.01.22)
Temperature condition: Cool Rt Hot Cool Rt Hot
Relative humidity: 5°C 25
±
2°C 40°C
75% 5°C 25 ± 2°C 40°C, 75%
Product testing:
Test process: Method Limits
Appearance: Visual Homogeno us
Colour: Visual Colourless OK OK OK OK OK OK
Odour: Characte ristic Characteris tic OK OK OK OK OK OK
PH @ 25 °C 5.5-7.0 OK OK OK OK OK OK
Specific
gravity @ 25
°C 0.8050-0.8300 6.24 6.2 8 6.11 6.45 6.54 6.44
Bkc / qac content (total) 0.480-0.500 0.818 6 0.8 19
2 0.81 58 0.81 48 0.81 50 0.815 0
Utl Visual Should be clear 0.500 0.4 97 0.49 9 0.48 8 0.48 1 0.482
Ltl Visual Should be clear OK OK OK OK OK OK
Container testing Visual Should be clear OK OK OK OK OK OK
The disinfectant composition as prepared above is tested for stability tests and outcome of the stability tests post 16 weeks and 32 weeks are provided in Table 6.
Table 6: Stability testing of disinfectant on 16 week and 32 week.

Test interval: Week 16 (09.02.22) Week 32 (08-06-2022)
Temperature condition: Cool Rt Hot Cool Rt Hot
Relative humidity: 5°C 25 ± 2°C 40
°c,
75 % 5°C 25 ± 2°C 40°C
75%
Pro< iuct testing
Test process: Method Limits
Appearance: Visual Homogen ous OK OK OK OK OK OK
Colour: Visual Colourles
s OK OK OK OK OK OK
Odour: Characte ristic Character istic OK OK OK OK OK OK
PH @ 25 °C 5.5 -7.0 6.28 6.45 6.5 1 6.32 6.3 5.73
Specific
gravity @ 25
°C 0.8050-0.8300 0.818
2 0.81 82 0.8 182 0.80
55 0.80 54 0.80 54
Bkc / qac content (total) 0.480-0.500 0.481 0.48 0.4 85 0.48 6 0.48
7 0.48 1
Utl Visual Should be clear OK OK OK OK OK OK
Ltl Visual Should be clear OK OK OK OK OK OK
Container testing Visual Should be clear OK OK OK OK OK OK
The above tables describe the stability testing of disinfectant over a different intervals of time.
Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of process described herein may be changed and are not limited to the manner described herein. The scope of embodiments is by no means limited by these specific examples. While certain embodiments of the invention have been illustrated and described herein, it is to be understood that the invention is not limited thereto. Clearly, the invention may be otherwise variously embodied and practiced within the scope of the disclosure.

WE CLAIM:

1. A disinfectant composition comprises:
ethanol, silica, propylene glycol methyl ether, benzalkonium chloride, silane compound, quarternary ammonium silane compound, antistatic agent, perfume and water.
2. The disinfectant composition as claimed in claim 1, optionally comprising at least one of a resin film forming agent, acetic acid, and dodecyl dimethyl ammonium chloride.
3. The disinfectant composition as claimed in claim 1, wherein the ethanol is in the range of 97.55%-97.75% V/V.
4. The disinfectant as claimed in claim 1, wherein the silica is in the form of colloidal silicate and is in a range of 0.05%-0.1% W/V and provides a nano-coating to the solution.
5. The disinfectant composition as claimed in claim 1, wherein the propylene Glycol Methyl ether is present in a range of 0.1%-0.3% W/V and functions as a solvent and cleanser.
6. The disinfectant composition as claimed in claim 1, wherein the benzalkonium chloride is in a range of 0.22%-0.25% W/V.
7. The disinfectant as claimed in claim 1, wherein the silane compound is a 3-Trimethoxysilyl PDOA and is present in a range of 0.70%-0.75% W/V and functions as nano-film former.
8. The disinfectant as claimed in claim 1, wherein the quarternary ammonium silane compound is in a range of 0.03%-0.35% W/V and functions as a fixative for antimicrobials for longer action.
9. The disinfectant composition as claimed in claim 1, wherein the antistatic agent is present in a range of 0.1%-0.2% W/V, the perfume is present in a range of 0.1%-0.3% W/V that provides fragrance attribute to the disinfectant, and water functions as a solvent.

10. The disinfectant composition as claimed in claim 1, wherein the composition has a pH vale in a range of pH 5.5 to 7.0.