# US 9,434,879 B2 · Etching compositions, methods and printing components

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,434,879 B2
- Document ID: US9434879B2
- Status: Granted
- Kind: B2
- Application number: 14/553,141
- Filed: 2014-11-25
- Published: 2015-03-19
- Granted: 2016-09-06
- Earliest claimed: 2007-09-24
- Assignees: Dip-Tech Ltd.
- Applicants: DIP Tech Ltd.
- Inventors: Matti Ben-Moshe; Michael Kheyfets
- Web page: https://patentgrep.com/patent/US9434879B2

## CPC

- C09K 13/10: containing a boron compound
- C03C 15/00: Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00)
- C09D 11/03: characterised by features other than the chemical nature of the binder
- C09D 11/30: Inkjet printing inks
- C09K 13/04: containing an inorganic acid
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

Liquid compositions for etching glass are disclosed herein. The liquid composition may include a non-active etching agent precursor that is inactive with respect to chemically etching glass in an amount of at least 2.5% by weight of the total composition, a binder and a liquid vehicle. The precursor may include an alkali metal salt having an activation temperature of at least 400° C. and when heated to above the activation temperature, the precursor yields an active etching agent suitable for chemical etching of glass.

## Claims

### Claim 1

A liquid composition comprising:
a non-active etching agent precursor in an amount of at least 2.5% by weight of the total composition, the non-active etching agent precursor is inactive with respect to chemically etching glass;
a binder; and
a liquid vehicle,
wherein the precursor comprises an alkali metal salt having an activation temperature of at least 400° C. and when heated to above the activation temperature, the precursor yields an active etching agent suitable for chemical etching of glass.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the alkali metal salt is a carbonate salt, a sulfate salt, a nitrate salt or a combination thereof.

### Claim 3 (depends on 1)

The composition of claim 1, wherein the alkali metal salt is potassium carbonate, lithium carbonate, sodium sulfate, lithium nitrate or any combination thereof.

### Claim 4 (depends on 1)

The composition of claim 1, wherein the binder comprises silica nanoparticles.

### Claim 5 (depends on 1)

The composition of claim 1, further comprising at least one pigment.

### Claim 6 (depends on 1)

The composition of claim 1, further comprising dendritic polymers.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the composition is formulated for inkjet printing and has a viscosity of 10-30 Cp at a jetting temperature.

### Claim 8 (depends on 1)

The composition of claim 1, wherein the composition is formulated for inkjet printing and has a viscosity of 1-10 Cp at a jetting temperature.

### Claim 9 (depends on 1)

The composition of claim 1 further comprising:
an additive which decreases the activation temperature at which the non-active etching agent precursor yields the active etching agent.