EP0337705A2
Expired / Lapsed
EP
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Printing inks
Assignee: Sericol Ltd
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Filing: 1989-04-10
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Granted: —
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Expires: 2009-04-10
Abstract
Abstract The invention provides screen printing inks consisting of a water-soluble, radiation curable component, a photoinitiator and/or a photochemical crosslinking agent, a pigment and/or a water soluble dye, and an ionic, non-radiation curable thickener. High screen stability has been achieved without compromising cure speed, combined with a low printed film weight comparable with that obtained with solvent based inks.
Inventors
- 👤 Robert Augustus Fassam
- 👤 Helen Jezequel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 12:21
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/101
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
29 words
A screen printing ink comprising a water-soluble, radiation-curable component, a photoinitiator and/or a photochemical crosslinking agent, a pigment and/or a water soluble dye, and an ionic, non-radiation curable thickener.
Claim 2
Dependent Claim
29 words
A screen printing ink comprising a water-soluble, radiation-curable component, a photoinitiator and/or a photochemical crosslinking agent, a pigment and/or a water soluble dye, and an ionic, non-radiation curable thickener.
Claim 3
Dependent Claim
23 words
A screen printing ink according to claim 1, wherein the ionic, non-radiation curable thickener comprises sodium carboxymethylcellulose, a poly-acrylic acid or a clay.
Claim 4
Dependent Claim
16 words
A screen printing ink according to claim 2, wherein the clay comprises montmorillonite, kaolinite or attapulgite.
Claim 5
Dependent Claim
26 words
A screen printing ink according to any of the preceding claims, containing from 20 to 80 percent of water based on the weight of the ink.
Claim 6
Dependent Claim
41 words
A screen printing ink according to any of the preceding claims, wherein the water soluble, radiation curable oligomer comprises a water soluble urethane acrylate, epoxy acrylate or polyester acrylate, an acrylamide-modified starch, or an amine-neutralised high acid value radiation curable oligomer.
Claim 7
Dependent Claim
39 words
A screen printing ink according to any of the preceding claims, wherein the water soluble unsaturated monomer comprises N-vinyl-pyrrolidone, acrylamide, N,N′-methylene bis-acrylamide, N-methylol acrylamide, di-acetone acrylamide, trimethylolpropane ethoxylate triacrylate, dimethylaminoethyl acrylate, an acrylic carbamate, hydroxyethyl methacrylate or hydroxyethyl acrylate.
Claim 8
Dependent Claim
21 words
A screen printing ink according to any of the preceding claims, including a water miscible solvent and/or a water soluble amine.
Claim 9
Dependent Claim
18 words
A screen printing ink according to any of the preceding claims, including a silicone or non-silicone flow aid.
Claim 10
Dependent Claim
15 words
A screen printing ink according to any of the preceding claims, including a mineral powder.
Claim 11
Dependent Claim
28 words
A screen printing ink according to any of the preceding claims, wherein the mineral powder comprises finely divided silicon dioxide, barium sulfate, calcium carbonate or hydrous magnesium silicate.
References Cited (Backward Citations)
No citation records indexed.
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