Method of manufacturing an etched glass article

Patent metadata

Field	Value
Publication number	US-10793468-B2
Application number	US-201716080405-A
Country	US
Kind code	B2
Filing date	Feb 24, 2017
Priority date	Feb 29, 2016
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

A method of manufacturing an etched glass article includes the steps of jetting an image with a UV curable inkjet ink on a surface of the glass article; UV curing the image; etching the surface not covered by the UV cured image to obtain an etched image; and removing the UV cured image in an aqueous alkaline solution; wherein the UV curable inkjet ink includes a polymerizable composition, wherein at least 80 wt % of the polymerizable composition consists of: a) 15.0 to 70.0 wt % of an acryl amide; b) 20.0 to 75.0 wt % of a polyfunctional acrylate; and c) 1.0 to 15.0 wt % of a (meth)acrylate containing a carboxylic acid group, a phosphoric acid group or a phosphonic acid group-; with all weight percentages (wt %) based on the total weight of the polymerizable composition.

First claim

The invention claimed is:

1. A method of manufacturing an etched glass article, the method comprising:
jetting an image with a UV curable inkjet ink on a surface of a glass article;
UV curing the image;
etching a surface of the glass article not covered by the UV cured image to obtain an etched image; and
removing the UV cured image in an aqueous alkaline solution; wherein
the UV curable inkjet ink includes a polymerizable composition, and at least 80 wt % of the polymerizable composition consists of:
a) 15.0 to 70.0 wt % of an acryl amide;
b) 20.0 to 75.0 wt % of a polyfunctional acrylate; and
c) 1.0 to 15.0 wt % of a (meth)acrylate including a carboxylic acid group, a phosphoric acid group, or a phosphonic acid group; and
all weight percentages (wt %) are based on a total weight of the polymerizable composition.

2. The method according to claim 1 , wherein the step of UV curing the image is performed with UV LEDs.

3. The method according to claim 1 , wherein a time between the steps of jetting the image and UV curing the image is at least 50 ms.

4. The method according to claim 1 , further comprising the step of:
heating the UV cured image before the step of etching.

5. The method according to claim 1 , wherein the glass article is a glass sheet.

6. The method according to claim 1 , further comprising the step of:
jetting a second UV curable inkjet ink including a colorant on at least a portion of the etched image.

7. The method according to claim 6 , wherein the step of jetting the second UV curable inkjet ink is performed before the step of removing the UV cured image.

8. The method according to claim 1 , wherein the acryl amide is a cyclic acryl amide.

9. The method according to claim 8 , wherein the cyclic acryl amide is acryloyl morpholine.

10. The method according to claim 1 , wherein at least 1.5 wt % of the (meth)acrylate including the carboxylic acid group, the phosphoric acid group, or the phosphonic acid group is present in the polymerizable composition.

11. The method according to claim 1 , wherein the (meth)acrylate including the carboxylic acid group, the phosphoric acid group, or the phosphonic acid group is selected from the group consisting of 2-carboxyethyl acrylate, 2-acryloyl ethyl succinate, and 2-hydroxyethyl methacrylate phosphate.

12. The method according to claim 1 , wherein the polyfunctional acrylate is selected from the group consisting of dipropylene glycol diacrylate, neopentylglycol diacrylate, neopentylglycol (2× propoxylated) diacrylate, penta erythritol tetraacrylate, 1,6-hexanediol diacrylate, trimethylolpropane trimethacrylate, ethoxylated trimethylolpropane triacrylate, tripropylene glycol diacrylate, ditrimethyloylpropane tetraacrylate, ethoxylated pentaerythritol tetraacrylate, and polyethyleneglycol diacrylate.

13. The method according to claim 1 , wherein the polymerizable composition consists of one or more of the acryl amide; one or more of the polyfunctional acrylate; and one or more of the (meth)acrylates including the carboxylic acid group, the phosphoric acid group, or the phosphonic acid group.

14. The method according to claim 1 , wherein the UV curable inkjet ink includes 0 to 3 wt % of a surfactant based on a total weight of the UV curable inkjet ink.

15. The method according to claim 1 , wherein the polymerizable composition includes one or more compounds selected from the group consisting of acryloyl morpholine, 2-carboxyethyl acrylate, 2-hydroxyethyl methacrylate phosphate, dipropylene glycol diacrylate, pentaerythritol tetraacrylate neopentylglycol diacrylate, neopentylglycol (2× propoxylated) diacrylate, pentaerythritol tetraacrylate, 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, tripropyleneglycoldiacrylate, and 2-(2-vinyloxy-ethoxy)-ethyl acrylate.

Assignees

• Agfa Gevaert Nv

Inventors

• Torfs Rita
• Louwet Frank
• Loccufier Johan
• Lens Mark

Classifications

• C03C17/28

  with organic material (C03C17/34, C03C17/44 take precedence) · CPC title

• C03C15/00 Primary

  Surface treatment of glass, not in the form of fibres or filaments, by etching (etching or surface-brightening compositions, in general C09K13/00) · CPC title

• C03C2218/119

  by printing · CPC title

• C09D11/107

  from unsaturated acids or derivatives thereof · CPC title

• C03C2218/355

  Temporary coating · CPC title