Description:TECHNICAL FIELD
[001] Present disclosure in general relates to a field of automobile engineering. Particularly but not exclusively, the present disclosure relates to an aqueous inorganic ink coating composition for windshield of a vehicle and method thereof for preparing the same.

BACKGROUND OF THE DISCLOSURE

[002] Generally, automobiles windshield is equipped with the black band, black painted enamel which is often referred as glass frit.
[003] The frit Enhances the bond between the glass and the car frame, providing structural strength and acts as a shield against UV radiation, safeguarding the adhesive bond from sunlight exposure.
[004] Polyurethane adhesives, commonly used for glass bonding, can weaken with prolonged sunlight exposure. The frit protects the adhesive bond from UV rays, maintaining its strength over time. Hybrid polymer-based adhesives offer enhanced UV resistance, ensuring longevity.
[005] The black band is made from organic compound or are organic based and contains elements comprising lead and cadmium. The organic compounds in these paints are hazardous for environment especially when such black band is dumped in garbage areas or taken ahead for recycling.
[006] There is a long-standing need to replace the conventional Black Band material being a glass frit with a new material or a new composition which are completely safe from all perspectives.

SUMMARY OF THE DISCLOSURE

[007] One or more shortcomings of conventional system are overcome, and additional advantages are provided through the provision of shift tower as claimed in the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

[008] In one non-limiting embodiment of the disclosure, a method for preparing an aqueous inorganic ink coating for windshield of a vehicle is described. The method comprises developing an activated alkaline solution (AAS). The method further comprises selecting a proportionate quantity of AAS with proportionate quantities of copper chromite, manganese ferrite, bismuth oxide, zinc oxide, kaolin, magnesium oxide, surfactant, and water. The method further comprises mixing the selected proportionate quantities under a high shear force to form an aqueous inorganic ink. The method further comprises passing the aqueous inorganic ink through a rolling mill.

[009] In one non-limiting embodiment of the disclosure, an aqueous inorganic ink coating composition for windshield of a vehicle is described. The aqueous inorganic ink coating composition comprises 70 – 80 % by weight proportionate quantity of AAS. The aqueous inorganic ink coating composition further comprises 15 - 25% by weight proportionate quantity of copper chromite. The aqueous inorganic ink coating composition further comprises 2 – 8 % by weight proportionate quantity of manganese ferrite. The aqueous inorganic ink coating composition further comprises 0.2 – 2 % by weight proportionate quantity of bismuth oxide. The aqueous inorganic ink coating composition further comprises 0. 01 - 0.1 % by weight proportionate quantity of zinc oxide. The aqueous inorganic ink coating composition further comprises 0.05 – 0.2 % by weight proportionate quantity of kaolin. The aqueous inorganic ink coating composition further comprises 0.01 – 0.1 % by weight proportionate quantity of magnesium oxide. The aqueous inorganic ink coating composition further comprises predefined proportionate quantity of surfactant. The aqueous inorganic ink coating composition further comprises predefined proportionate quantity of water.

[010] It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the disclosure.
[011] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF ACCOMPANYING DRAWINGS

[012] The novel features and characteristic of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings. One or more embodiments are now described, by way of example only, with reference to the accompanying drawings wherein like reference numerals represent like elements and in which:
[013] Figure. 1 illustrates a portion of vehicle windshield 101 equipped with an aqueous inorganic ink coating 102, in accordance with a first embodiment of the present disclosure.
[014] Figure. 2 illustrates an assembly 200 of the vehicle windshield 101 attached over the vehicle along Section A - A, in accordance with a second embodiment of the present disclosure.
[015] Figure. 3 illustrates a method 300 of preparation of an aqueous inorganic ink coating 102 composition for a windshield 101 of a vehicle, in accordance with a third embodiment of the present disclosure.
[016] The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION

[017] While the embodiments in the disclosure are subject to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the figures and will be described below. It should be understood, however, that it is not intended to limit the disclosure to the particular form disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.
[018] It is to be noted that a person skilled in the art would be motivated from the present disclosure and modify various constructions of the shift tower, which may vary from transmission to transmission. However, such modifications should be construed within the scope of the disclosure. Accordingly, the drawings show only those specific details that are pertinent to understand the embodiments of the present disclosure, so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
[019] The terms “comprises”, “comprising”, or any other variations thereof used in the disclosure, are intended to cover a non-exclusive inclusion, such that assembly that comprises a list of components does not include only those components but may include other components not expressly listed or inherent to such assembly. In other words, one or more elements in the assembly proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the assembly.

[020] The following paragraphs describe the present disclosure with reference to Figures. 1 to 3. In the Figures, the same element or elements which have similar functions are indicated by the same reference signs. In the figures, vehicle is not illustrated for the purpose of simplicity.
[021] The present disclosure is directed to overcome one or more limitations stated above and any other limitations associated with the prior arts.
[022] Referring now to Figure. 1, a portion of vehicle windshield 101 equipped with an aqueous inorganic ink coating 102 is disclosed, in accordance with a first embodiment of the present disclosure.
[023] The aqueous inorganic ink coating 102 is painted or adhered over the windshield 101 from the inner side i.e. from cabin side with a continuous coating at the edges and with reducing form with short reducing circles.
[024] The composition of aqueous inorganic ink coating for windshield by mass described in Table 1:
COMPOSITION OF AQUEOUS INORGANIC INK COATING
Component Mass %
Alkaline Activated Solution 74.67
Copper Chromite (CuCr) 19.97
Manganese Ferrite (MnFe) 4.99
Bismuth Oxide (Bi2O3) 0.2
Zinc Oxide (ZnO) 0.03
Kaolin 0.11
Magnesium Oxide (MgO) 0.02
Surfactant Mass Ink *0.3%
Water Mass AAS *1%
Table 1
[025] The Composition of the alkaline activated solution is provided in Table 2.
Composition of the alkaline activated solution
Component Mass%
Water 45.96
Sodium hydroxide
(NaOH) 18.55
Silicon Dioxide
(SiO2) 35.49
Table 2
[026] In an exemplary embodiment, the surfactant used in the composition is a non-silicone, non-fluorine, low foaming surfactant
[027] The Table 1 discloses the preferred masses in percentage, however the masses of the components may vary with the following ranges as shown in Table 3.

COMPOSITION OF AQUEOUS INORGANIC INK COATING
Component Mass %
Alkaline Activated Solution 70 – 80
Copper Chromite (CuCr) 15 – 25
Manganese Ferrite (MnFe) 2 – 8
Bismuth Oxide (Bi2O3) 0.2 – 2
Zinc Oxide (ZnO) 0. 01 - 0.1
Kaolin 0.05 – 0.2
Magnesium Oxide (MgO) 0.01 – 0.1
Surfactant Mass Ink *0.01 – 0.1 %
Water Mass AAS *1%

[028] Referring now to Figure. 2, an assembly 200 of the vehicle windshield 101 attached over the vehicle BIW panel 201 along Section A – A is disclosed, in accordance with a second embodiment of the present disclosure.
[029] The windshield 101 with the aqueous inorganic ink coating 102 is attached over the vehicle BIW panel 201 via an adhesive 202. The adhesive 202 may be butyl-based adhesive.
[030] In an embodiment, the aqueous inorganic ink coating 102 may also be applied over the glass of rear window and side windows.
[031] Referring now to Figure. 3, a method 300 of preparation of an aqueous inorganic ink coating 102 composition for a windshield 101 of a vehicle is disclosed, in accordance with a third embodiment of the present disclosure.
[032] At step 301, a sodium hydroxide solution is developed by mixing proportionate amount of sodium hydroxide (NaOH) with water. The solution is heated to form a uniform solution of sodium hydroxide and is kept further for cooling.
[033] At step 302, once the sodium hydroxide solution is cooled, precipitated silica (SiO2) with a proportionate quantity.
[034] In an embodiment, the composition of sodium hydroxide solution is achieved by mixing of 45.96 % by mass of water, 18.55 % by mass of NaOH, and 35.49 by mass of SiO2.
[035] At step 303, the mixture of sodium hydroxide solution and precipitated is heated at a predefined temperature and cooled under rotary motion.
[036] At step 304, the activated alkaline solution (also referred as AAS) is formed and achieved after constant cooling of the mixture obtained in step 303.
[037] At step 305, a proportionate quantity of activated alkaline solution (AAS) is added with other composite components consisting of proportionate quantities of copper chromite, manganese ferrite, bismuth oxide, zinc oxide, kaolin, magnesium oxide, surfactant, and water.
[038] In an embodiment, the proportionate quantity of AAS is 74.67% by weight, copper chromite is 19.97% by weight, manganese ferrite is 4.99% by weight, bismuth oxide is 0.20% by weight, zinc oxide is 0.03% by weight, kaolin is 0.11% by weight, magnesium oxide is 0.02% by weight.
[039] Further, the proportionate quantity of surfactant is 0.03% by mass of ink and proportionate quantity of water is 1.0% by mass AAS.
[040] In an embodiment, the surfactant is non-silicone, non-fluorine, low foaming surfactant.
[041] At step 306, the mixture obtained in step 305 is mixed under a high shear force to form an aqueous inorganic ink.
[042] At step 307, the aqueous inorganic ink formed at step 306 is further rolled under a rolling mill to form aqueous inorganic ink coating for windshield of a vehicle.
[043] In an embodiment, the rolling mill used is be a 3 roll mill.

Equivalents:

[044] With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.
It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances, where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."

[045] While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Referral Numerals:
Referral numeral Description
101 Windshield
102 Aqueous inorganic ink coating
200 Assembly
201 BIW panel
202 Adhesive
300 Method
, Claims:1. A method 300 for preparing an aqueous inorganic ink coating 102 for windshield 101 of a vehicle, the method 300 comprising:
developing an activated alkaline solution (AAS):
selecting a proportionate quantity of AAS with proportionate quantities of copper chromite, manganese ferrite, bismuth oxide, zinc oxide, kaolin, magnesium oxide, surfactant, and water;
mixing the selected proportionate quantities under a high shear force to form an aqueous inorganic ink;
passing the aqueous inorganic ink through a rolling mill.

2. The method 300 of claim 1, wherein the AAS is developed by
mixing water and sodium hydroxide to form a sodium hydroxide solution;
mixing the sodium hydroxide solution with precipitated silica to form a mixed solution;
heating the mixed solution and cooling the heated mixed solution under rotary motion.

3. The method of claim 1, wherein the rolling mill is selected from a multi- roll mill.

4. The method of claim 1, wherein proportionate quantity of AAS is between 70 – 80 % by weight.

5. The method of claim 1, wherein proportionate quantity of copper chromite is 15 - 25% by weight.

6. The method of claim 1, wherein proportionate quantity of manganese ferrite is 2 – 8 % by weight.

7. The method of claim 1, wherein proportionate quantity of bismuth oxide is 0.2 – 2 % by weight.

8. The method of claim 1, wherein proportionate quantity of zinc oxide is 0. 01 - 0.1% by weight.

9. The method of claim 1, wherein proportionate quantity of kaolin is 0.05 – 0.2 % by weight.

10. The method of claim 1, wherein proportionate quantity of magnesium oxide is 0.01 – 0.1 % by weight.

11. The method of claim 1, wherein proportionate quantity of surfactant is 0.01 – 0.1% by mass of ink.

12. The method of claim 11, wherein the surfactant is non-silicone, non-fluorine, low foaming surfactant.

13. The method of claim 1, wherein proportionate quantity of water is 1.0% by mass of AAS.

14. An aqueous inorganic ink coating 102 composition for windshield 101 of a vehicle, comprising:

70 – 80 % by weight proportionate quantity of AAS;
15 – 25 % by weight proportionate quantity of copper chromite;
2 – 8 % by weight proportionate quantity of manganese ferrite;
0.2 – 2 % by weight proportionate quantity of bismuth oxide;
0. 01 - 0.1 % by weight proportionate quantity of zinc oxide;
0.05 – 0.2 % by weight proportionate quantity of kaolin;
0.01 – 0.1 % by weight proportionate quantity of magnesium oxide;
predefined proportionate quantity of surfactant; and
predefined proportionate quantity of water.

15. An aqueous inorganic ink coating composition claim 14, wherein proportionate quantity of surfactant is 0.01 – 0.1 % by mass of ink.

16. An aqueous inorganic ink coating composition claim 15, wherein the surfactant is non-silicone, non-fluorine, low foaming surfactant

17. An aqueous inorganic ink coating composition claim 14, wherein proportionate quantity of water is 1.0% by mass AAS.