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1. WO2020110140 - A COMPOSITION FOR LACQUERING GLASS SUBSTRATES

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[ EN ]

Claims

We Claim:

1) A composition for lacquering glass substrates comprising:

about 10 - 90% of a resin;

about 2 - 40 % of filler selected from the group consisting of inorganic particles;

about 2 - 50% of pigments selected from the group consisting of metal pigments or color pigments;

about 1 - 20% of cross linkers selected from an amine group or an epoxy group or an acrylic group;

about 0.1 - 10% of adhesion promoters; and

about 0.1 - 5% of surfactants dissolved in about 1 - 60% of water, wherein the said composition is devoid of any organic solvents.

2) The composition as claimed in claim 1 , wherein the resin is a water-soluble resin or a water-dispersible resin or an emulsion.

3) The composition as claimed in claim 1, wherein the resin is a dispersion or an emulsion or a suspension containing polyurethane, epoxy resin, ester resin, acrylic resin, alkyd resin, melamine resin or their combinations thereof.

4) The composition as claimed in claim 1 , wherein the filler is selected from the group consisting of glass bubble, glass flake, ceramic beads or glass microbeads.

5) The composition as claimed in claim 1, wherein the metal pigments or color pigments are selected from the group consisting of ZnS, ZnO, BaSC>4, Zn3(PC>4)2, FeO, phthalocyanine, carbon black, aluminum powder, ammonium manganese (III) pyrophosphate, cobalt violet, cobalt blue, chrome yellow or chrome green.

6) The composition as claimed in claim 1 , wherein the cross linkers are selected from the group consisting of aromatic amine, aliphatic amine, cycloaliphatic amine, epoxides or urethane.

7) The composition as claimed in claim 1 , wherein the adhesion promoters are selected from the group consisting of 3-glycidyloxypropyl trimethoxysilane, polymeric salt- acidic group hybrid, epoxy silane oligomer, metal chelating titanate or zirconate, g- minopropyltriethoxysilane or vinyltrimethoxysilane.

8) The composition as claimed in claim 1, wherein the surfactants are selected from the group consisting of rheology modifiers, flow agents, levelling agents, de aerators, deformers, wetting agents or dispersion agents.

9) The composition as claimed in claim 1 is opaque and has gloss values ranging between 10 - 100 R-60°.

10) A method of making a lacquered glass comprising the steps of:

cleaning a glass substrate having a first surface and a second surface; coating the lacquer composition as claimed in claim 1 on the first surface of the glass substrate; and

curing the first surface of the glass substrate coated with the lacquer composition for about 5 - 30 minutes to obtain a lacquered glass.

11) The method as claimed in claim 10, wherein step of coating the lacquer composition is done by Meyer rod coating, curtain coating, roller coating, spin coating, bar coating or spray coating.

12) The method as claimed in claim 10, wherein the thickness of the lacquer composition ranges between 40 - 100 pm.

13) The method as claimed in claim 10, wherein the viscosity of the lacquer composition ranges between ford cup 4 efflux time 15-150 seconds.

14) A lacquered glass article comprising the composition for lacquering as claimed in claim 1.

15) The lacquered glass as claimed in claim 14 wherein the composition of lacquering covers about 10 - 80% of the surface area of the glass article.

16) The lacquered glass as claimed in claim 14 wherein the composition of lacquering covers the entire surface area of the glass article.