EP0106628A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Printing ink
Assignee: Johnson Matthey PLC
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Filing: 1983-10-05
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Granted: —
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Expires: 2003-10-05
Abstract
Abstract A radiation (preferably UV)-curable printing ink for applying a decoration to ceramic, metallic, vitreous or transfer paper substrates and which fires well consists of a colouring material and a medium comprising a fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator. The diluent is resin-free and enables the cured film successfully to withstand fast firing schedules such as are used in the production of car windscreens.
Inventors
- 👤 David Carter
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:24
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/101; B; B41; B41M; B41M1/00; B41M1/26; B41M1/34; B41M3/00; B41M3/12; B41M7/00; B41M7/0081
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
31 words
A radiation-curable and firable printing ink comprising a colouring material and a medium therefor, wherein the medium consists essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator.
Claim 2
Dependent Claim
31 words
A radiation-curable and firable printing ink comprising a colouring material and a medium therefor, wherein the medium consists essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator.
Claim 3
Dependent Claim
17 words
An ink according to claim 1 wherein the resin is solid at temperatures up to about 25°C.
Claim 4
Dependent Claim
28 words
An ink according to claim 1 or claim 2 wherein the resin is not less than about 80% volatilisable on heating to a temperature of 450°C in air.
Claim 5
Dependent Claim
27 words
An ink according to any preceding claim wherein the resin is an acrylic resin, a hydrocarbon resin, a ketone resin, a cellulose resin or a rosin derivative.
Claim 6
Dependent Claim
37 words
An ink according to claim 4 wherein the resin is acrylic and is a homopolymer selected from polymethylmethacrylate and polybutylmethacrylate, or a co-polymer of two or more monomers selected from methylmethacrylate, butylmethacrylate, methacrylic acid and ethyl acrylate.
Claim 7
Dependent Claim
15 words
An ink according to any of claims 1 to 5 wherein the diluent is resin-free.
Claim 8
Dependent Claim
12 words
An ink according to claim 6 wherein the diluent contains ethylenic unsaturation.
Claim 9
Dependent Claim
15 words
An ink according to claim 7 wherein the diluent comprises a monofunctional or polyfunctional acrylate.
Claim 10
Dependent Claim
33 words
An ink according to claim 7 wherein the diluent comprises a vinyl-containing compound selected from vinyl pyrrollidone, isobornyl acrylate, hexane diol diacrylate, triethylene glycol diacrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate and pentaerythritol triacrylate.
Claim 11
Dependent Claim
14 words
An ink according to claim 7 wherein the diluent contains an aliphatic ether linkage.
Claim 12
Dependent Claim
19 words
An ink according to claim 10 wherein the diluent comprises an alkoxylated derivative of a monofunctional or polyfunctional acrylate.
Claim 13
Dependent Claim
23 words
An ink according to any of claims 1 to 11 which contains from 40 to 85% by weight of colouring material, balance medium.
Claim 14
Dependent Claim
33 words
An ink according to any preceding claim in which the medium comprises from 1 to 80% by weight thermoplastic resin, from 15 to 95% by weight diluent, balance photoinitiator and optionally inessential additives.
Claim 15
Dependent Claim
87 words
A process for decorating a ceramic, vitreous or metallic substrate comprising applying a decoration in a radiation-curable printing ink, curing the ink by exposure to radiation and thereafter firing the decorated substrate, wherein the ink contains a colouring material and a medium which consists essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator, the frit being molten at the peak firing temperature, and the resin and cured diluent being fugitive at temperatures lower than the temperature at which the frit begins to sinter.
Claim 16
Dependent Claim
87 words
A process for decorating a ceramic, vitreous or metallic substrate comprising applying a decoration in a radiation-curable printing ink, curing the ink by exposure to radiation and thereafter firing the decorated substrate, wherein the ink contains a colouring material and a medium which consists essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator, the frit being molten at the peak firing temperature, and the resin and cured diluent being fugitive at temperatures lower than the temperature at which the frit begins to sinter.
Claim 17
Dependent Claim
84 words
A process according to claim 14 for applying a mask to a - car windscreen, wherein a film of printing ink is applied by screen printing, the ink consisting of an enamel colour and a medium comprising a fully polymerised thermoplastic resin, a photoinitiator and a radiation-curable ethylenically-unsaturated diluent, the film is subjected to radiation to cure the diluent, and the windscreen carrying the cured film is subjected to a fast firing schedule in which the heating rate is at least 100°C per minute.
Claim 18
Dependent Claim
69 words
A process for decorating a ceramic, vitreous or metallic substrate by applying a decoration in a radiation-curable printing ink comprising a colouring material and a medium consisting essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator to a decalcomania substrate, curing the ink by exposure to radiation and thereafter transferring the decoration to the ceramic, vitreous or metallic substrate and firing the thus decorated substrate.
Claim 19
Dependent Claim
69 words
A process for decorating a ceramic, vitreous or metallic substrate by applying a decoration in a radiation-curable printing ink comprising a colouring material and a medium consisting essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator to a decalcomania substrate, curing the ink by exposure to radiation and thereafter transferring the decoration to the ceramic, vitreous or metallic substrate and firing the thus decorated substrate.
Claim 20
Dependent Claim
54 words
A process for making a decalcomania comprising applying a decoration to a decalcomania backing sheet and curing the said decoration by exposure to radiation, wherein the decoration is constituted by a printing ink comprising a colouring material and a medium consisting essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator.
Claim 21
Dependent Claim
54 words
A process for making a decalcomania comprising applying a decoration to a decalcomania backing sheet and curing the said decoration by exposure to radiation, wherein the decoration is constituted by a printing ink comprising a colouring material and a medium consisting essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator.
Claim 22
Dependent Claim
69 words
A decalcomania for applying a decoration to a ceramic, vitreous or metallic substrate, the decalcomania comprising a decalcomania backing sheet and a decoration layer, wherein the decoration layer is formed from a radiation-curable printing ink comprising a colouring material and a medium consisting essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator, the decoration layer having been exposed to radiation to cure the printing ink.
Claim 23
Dependent Claim
69 words
A decalcomania for applying a decoration to a ceramic, vitreous or metallic substrate, the decalcomania comprising a decalcomania backing sheet and a decoration layer, wherein the decoration layer is formed from a radiation-curable printing ink comprising a colouring material and a medium consisting essentially of a substantially fully-polymerised thermoplastic resin, a radiation-curable diluent and a photoinitiator, the decoration layer having been exposed to radiation to cure the printing ink.
References Cited (Backward Citations)
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