CN101484946A - A method of printing on optical discs - Google Patents

A method of printing on optical discs Download PDF

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Publication number
CN101484946A
CN101484946A CNA2007800254237A CN200780025423A CN101484946A CN 101484946 A CN101484946 A CN 101484946A CN A2007800254237 A CNA2007800254237 A CN A2007800254237A CN 200780025423 A CN200780025423 A CN 200780025423A CN 101484946 A CN101484946 A CN 101484946A
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CN
China
Prior art keywords
composition
printing
acrylate
coating
prepolymer
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Pending
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CNA2007800254237A
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Chinese (zh)
Inventor
罗宾·麦克米伦
斯图尔特·克塞尔
詹姆士·弗朗西斯·韦尔奇
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Sun Chemical Corp
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Sun Chemical Corp
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Publication of CN101484946A publication Critical patent/CN101484946A/en
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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G11B23/40—Identifying or analogous means applied to or incorporated in the record carrier and not intended for visual display simultaneously with the playing-back of the record carrier, e.g. label, leader, photograph
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0015—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
    • B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
    • B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
    • B41J11/00214—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4071—Printing on disk-shaped media, e.g. CDs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5209—Coatings prepared by radiation-curing, e.g. using photopolymerisable compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/12—Preparation of material for subsequent imaging, e.g. corona treatment, simultaneous coating, pre-treatments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5227—Macromolecular coatings characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5263—Macromolecular coatings characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B41M5/5272—Polyesters; Polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5263—Macromolecular coatings characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B41M5/5281—Polyurethanes or polyureas

Abstract

The present invention applies a composition onto one side of optical disk and then radiation-curing. The composition comprises a prepolymer, at least one monomer, a photoinitiator and a levelling additive, the composition being free from any surface-modifying additives that would interfere with printability, and the cured composition being water-insoluble and non-absorbing to water, is applied to one side of an optical disc and is then radiation-cured. The resulting coated surface is receptive to printing using a radiation-curable ink jet ink.

Description

Method of printing on CD
The present invention relates to method of printing on CD.
CD comprises compact discs (CD) and various digital versatile disc (DVD), and it comprises as forms such as blu-ray disc (Blu-ray Disc) and HD-DVD.They are designed to carry the data (comprising audio frequency or video information) that can be read by laser or other optical device.The dish that writes down in advance or duplicate is usually being had a printing top layer by the reverse side of laser or the reading of other optical device, with the purpose that shows the information characteristics on the dish or only be used to decorate.For instance, under the situation of compact discs, zone to be decorated is disc material, polycarbonate normally, is again the spin coating that is used to protect recording medium.Expect that this printing should be durable, water-fast and grease resistance and cheap.
For long printing operation process, for example 1000 more than the dish, duplicate industry and will adopt silk screen and/or hectographic printing usually.These technology can produce that every dish is all relatively cheap, the image of good strong and durable printing quality.
Yet, for short printing operation process, for example 500 parts or still less, such technology makes the cost of every dish become too high.For example for the operational process of 50 dishes, the cost of every dish of high-quality serigraphy can reach every dish GBP1 at an easy rate.
Therefore, short like this printing operation process is handled with ink jet printing now usually.(being non-duplicating) that these operations are also normally made carbon copies is unless they are the duties that are used for repetition, fill it up with.
Because it is bad that traditional ink-jet adheres to optical disc surface (normally polycarbonate under the situation of CD, can also be that UV solidifies spin coating perhaps),, make bottom and CD and ink-jet adhere to well so bottom has been taked many suggestions.Such bottom can be used by for example serigraphy or spin coating technique.Example comprises: EP 0 574 860, EP 0 628 956, EP 1 294 570, US 5 573 831 and US 6 437 017, it has all been described absorbing agent prime coat (preferably hydrophillic bottom layer), as the substrate of adopting the standard ink jet inks printer to print subsequently.Products obtained therefrom be attractive and every dish relatively cheap.
Although these prior aries suggestions they desired aspect success, they use water base ink-jet, and do not solve these black basic problems when using by this way---they are just durable inadequately.They are in water or even will fall down from CD under normal process.In addition, they have poor wearing quality usually.These problems can be by covering printed article or overcoming by spraying or printing varnish or lacquer coat with transparent membrane.Yet any of these makeshift all increased extra treatment step, and it always increases expense and possibility is inconvenient, and the material that it need be extra, therefore increased expense.
Standard ink jet inks is all used in all top suggestions.These China inks are normally water base or solvent based.Such China ink by evaporation and absorb enter they be printed thereon substrate and drying, this causes the top various shortcomings of being mentioned.As far as our knowledge goes, handle the ink-jet that neither one in the existing suggestion of this problem adopts any other type.
(as the UV energy-curable) ink-jet of radiation-curable is known.The not moisture usually or organic solvent of these ink-jets, and by solidifying and " exsiccations ", described curing are owing to by being exposed to the result of the polymerization that UV (ultraviolet light) or other radiation (as electron beam) cause.Unlike its water-based equivalents, in case solidify, they just can provide hard, permanance surface, and it can be water-fast, oily, body fluid and the domestic available fluid of major part, and its energy rub resistance.Yet in experiment, we have found that under the situation of the undercoat that is with or without the above-mentioned type, the UV ink-jet that is suitable for high definition print head such as XAAR Omnijet 318 is printed bad on conventional optical disc.For instance, this coating can be removed by scraping even with nail usually, and the image of printing is of poor quality usually, and its printing points owing to difference forms has " (washed-out) that wash off " or faded (faded) outward appearance.Shall also be noted that image when spray printing with the solid look and when white is made back side look particularly, can obtain best visual results.
If use wet undercoat, that is, before having become dry or solidified, it uses, we have found that the printing quality that when spray printing, can obtain.Yet in case coating is dry or curing, printing quality is owing to the acceptability of difference becomes dissatisfied.This is unfavorable, because be responsible for manifolding industry two independent printing process of uncomfortable needs (barrier coating, spray printing top layer then) of short CD operational process.Except two of needs independently (coating machine of each process) the expense of coating machine, they will have by hand transfers to the labour cost that is increased on another machine with disk from a machine, perhaps must invest to realize this operation of machinery more machinery.In either case, this not only increases cost but also has the danger that damages the CD that is transferred.The empty recordable optical disk that is coated with undercoat will be preferably used in this industry, so that they just must be concerned about printed information or decoration thereon.
We have found that now these problems can overcome by the undercoat material that use has some specific physics and a chemical property.
Therefore, the present invention relates to have the CD of readable of light and printing surface, what described printing surface had a radiation curing accepts coating (receptive coating), the described coating of accepting forms by the radiation-curable composition that comprises prepolymer, at least a monomer and smooth adjuvant is carried out radiation curing, described composition does not contain any surface modified additive that can disturb impressionability, and cured compositions is water insoluble and do not absorb water.In addition, the solvent resistance that cured coating should have high level to be promoting ink-jet lip-deep wetting at this, and avoids the softening of inkjet compositions and penetrate into this coating.
Famous in disturbing the surface modified additive of impressionability is the organosilicon surface modified additive, therefore, in one embodiment, the invention provides CD with readable of light and printing surface, described printing surface has the coating of accepting of radiation curing, the described coating of accepting forms by the composition that comprises prepolymer, at least a monomer and smooth adjuvant is carried out radiation curing, described composition does not contain any organosilicon surface modified additive, and cured compositions is water insoluble and do not absorb water.
Unlike the prior art, in the present invention, accept coating and do not absorb the China ink that is applied on it; On the contrary, China ink is positioned at the top of coating and by radiation such as UV or electron beam and solidify.Under composition will be by the situation of UV energy-curable, except the top composition of mentioning, it should comprise light trigger.Under the situation that it is solidified by electron beam (EB), light trigger not necessarily.
Suppose that the composition that forms receiving layer does not contain organosilicon or similar surface modifier, then the ink-jet of radiation-curable will adhere well to the surface of hardening composition.For good compatibility between the China ink of accepting coating and curing that obtains to solidify, the coating of accepting of curing also should be that water is undissolved and do not absorb water.
Therefore, the present invention further provides a kind of method, wherein the ink-jet of radiation-curable is by on the curing receiving layer (as defined above) of spray printing on the CD one side, and should solidify by being exposed to curing radiation subsequently by China ink.
Suppose and adhere to top qualifications, the composition of then accepting coating can change in wide region.It should comprise following ingredients at least:
1. the prepolymer of radiation-curable;
2. the monomer of radiation-curable;
3. light trigger is if composition is by the UV energy-curable; With
4. smooth adjuvant, it is not organic silica-based surface modifier.
In addition, said composition randomly and preferably comprises one of following or both:
5. pigment and/or filler and/or extender; With
6. structural additives.
Be used to prepare the composition of accepting coating and advantageously comprise the combination of at least a prepolymer or prepolymer.Suitable prepolymer (being also referred to as oligomer) comprises the epoxidised soybean oil of amine, acrylic acid saturated resin, acrylic acrylate, cycloaliphatic epoxides (kation), phenol epoxy novolac and acroleic acid esterification of oil, urethane acrylate, polyester acrylate, polyether acrylate, the acroleic acid esterification of epoxy acrylate, acroleic acid esterification.Preferably, this prepolymer has number-average molecular weight greater than 500, and more preferably greater than 800.Based on the gross weight of composition, this is accepted coating and preferably includes and be not less than 10% and preferably be not less than one or more such prepolymers of 20% by weight.Preferably, based on the gross weight of composition, accept coating and comprise and be not more than 50% and preferably be not more than 40% prepolymer by weight.For instance, based on the gross weight of composition, prepolymer can exist with from 1% to 60% amount by weight, and preferably 20% to 40%.In a preferred embodiment, prepolymer has the number-average molecular weight greater than 500, and exists with 20% to 40% level by weight based on the gross weight of composition.Present low-level contraction after the preferred prepolymer cures.Further details and example are at " the Chemistry ﹠amp that is compiled by G Webster; Technology of UV ﹠amp; EBFormulation for Coatings, Inks ﹠amp; Paints ", II volume: Prepolymers ﹠amp; Provide among the Reactive Diluents, its disclosure is merged in this paper by reference.In the middle of these, epoxy acrylate is preferred, and bisphenol A epoxy acrylate and modified bisphenol A epoxy acrylate (for example modification by during preparation introducing amino, hydroxyl, polyester and epoxide group) are preferred.Particularly preferably be those with the available epoxy acrylate of following brand name: from Ebecryl 3701, Ebecryl 3700, Ebecryl 3500, Ebecryl 3708 and the Ebecryl 605 of UCB, Craynor CN104A80, Craynor CNUVE110/95 and Actilane320TP20 ex Cray Valley.
The monomer of radiation-curable is ethylenically unsaturated compounds preferably, and for example acrylate, methacrylate or vinyl compound perhaps can be by open loop mechanism polymeric compounds.
The example of suitable acrylate monomer comprises: butanediol diacrylate; Trimethylolpropane triacrylate; Two-trimethylolpropane tetra-acrylate; Pentaerythritol triacrylate; Two-pentaerythrite, five acrylate; Polyether acrylate is as the tetramethylol methane tetraacrylate of the trimethylolpropane triacrylate of ethoxylation, glycerine propoxylate triacrylate, ethoxylation; Epoxy acrylate is as two anols (dianol) diacrylate (=2, the diacrylate of two [4-(2-hydroxyl-oxethyl) phenyl] propane of 2-is from the Ebecryl150 of UCB); Glycol diacrylate such as tripropylene glycol diacrylate, polyethyleneglycol diacrylate (for example tetraethylene glycol diacrylate), neopentylglycol diacrylate and propylene glycol diacrylate; The acrylate of ethoxylation or propenoxylated dibasic alcohol and polyvalent alcohol, for example propenoxylated neopentylglycol diacrylate, the trimethylolpropane triacrylate of ethoxylation and alkyl acrylate are as hexanediyl ester, isobornyl acrylate, 2-(2-ethoxy ethoxy) ethyl propylene acid esters, the octadecyl acrylate, lauryl acrylate, stearyl acrylate acyl ester, isodecyl acrylate, 2-ethyl hexyl acrylate, decyl acrylate, isobornyl acrylate, phenoxyethyl acrylate, the ethylating phenol acrylate of oxygen, the acrylic acid tetrahydrofuran ester, 2-(2-ethoxy ethoxy) ethyl propylene acid esters and 4-tert-butylcyclohexyl acrylate.
Methacrylate monomers comprises the methacrylate equivalent of top described acrylate, and be hexanediol dimethacrylate, trimethylolpropane triacrylate, triethylene glycol dimethylacrylate, diethylene glycol dimethylacrylate, ethylene glycol dimethacrylate and 1 especially, the 4-butanediol dimethylacrylate.
The reactive diluent of the non-acrylateization that can introduce comprises vinyl composition such as N-vinyl pyrrolidone, N-caprolactam, N-vinyl formamide, vinyl ether and styrene.N-caprolactam (VCAP) has been found to be and has been particularly suitable for being included in preparation the present invention and accepts vinyl monomer in the composition that coating uses, and this is because its adhesion good to optical disc substrate.Vinyl ether compound also can be used, it comprises α, the beta-unsaturated ether monomer, as triethylene glycol divinyl ether, diethylene glycol divinyl ether, 1,4-cyclohexanedimethanol divinyl ether and glycol monomethyl vinyl ether, and ethyl one propenyl ether, triethylene glycol methylpropenyl ether, triethylene glycol methyl vinyl ether and 2-cyclopentene-1-base ether.Other monomer comprises acryloyl morpholine.
The suitable oxygen open loop monomer that contains comprises those monomers that contain oxetanes ring or oxirane ring.The oxirane ring comprises alicyclic epoxy ethane (being also referred to as epoxide), as 3, and 4-oxirane hexyl methyl-3,4-oxirane hexyl carboxylate, and the glycidyl ether of polyvalent alcohol.The oxirane of deriving by the epoxidation of unsaturated materials also can be fit to, for example epoxidised soybean oil, epoxidized polybutadiene or epoxidation of olefins.Oxetanes comprises simple function group and polyfunctional group oxetanes, for example 3-ethyl-3-methylol-oxetanes, two [(1-ethyl-3-oxetanyl) methyl] ether, 3-ethyl-3-[2-ethyl hexyl oxy) methyl] oxetanes, [1, two (3-ethyl-3-oxetanes ylmethoxy) methyl of 4-] benzene and trimethylolpropane oxetanes.Many other suitable materials are known to the technician.
Preferably should select to be used for high capillary prepolymer and monomer, so that said composition has than the higher surface tension of ink-jet thereon to be printed.For example, prepolymer preferably has 35mN/m (dyne/cm at least 2) surface tension, 38mN/m (dyne/cm at least more preferably 2), monomer should preferably have 32mN/m (dyne/cm at least simultaneously 2) surface tension, 35mN/m (dyne/cm at least more preferably 2).
It can be free-radical curable, cationically curable accepting coating or it can be curable by the combination of these two kinds of mechanism.It can also be by electron beam curable.If coating is by the UV energy-curable, light trigger may be necessary so.The character of used light trigger will depend on the curing mechanism of expectation, but not be crucial for the present invention in addition.Light trigger can be dissociative type or hydrogen-abstraction, and preferably is selected from following initiator type: the acyl group phosphine oxide of benzophenone, thioxanthones and related compound, hydroxyalkyl phenyl ketone, aminoalkyl phenyl ketone, anthraquinone, standard and modification (as Lucirin TPO and TPO-L), two acyl group phosphine oxide (as Irgacure 819), benzil ketals, benzoin ether, acetophenone, β ketone sulfone, oxime ester and glyoxic acid phenenyl ester (phenyl glyoxic acid esters).The instantiation of such cation light initiator comprises sulfonium salt (as the potpourri from the available compound of trade (brand) name UVI6992 of Dow Chemical), thianthrene (thianthrenium) salt (as from the available Esacure 1187 of Lamberti), salt compounded of iodine (as IGM 440) from IGM, phenacyl sulfonium salt and thioxanthones (thioxanthonium) salt, such as at WO 03/072567A1, those that describe among WO 03/072568 A1 and WO 2004/055000 A1, its disclosure is incorporated herein by reference, those as being sold with trade mark IGM 550 and IGM 650 by IGM.
The other example of light trigger, synergist and sensitizer can find in standard textbook, as Chemistry ﹠amp; Technology of UV ﹠amp; EB Formulation for Coatings, Inks﹠amp; Paints ", III volume, " Photoinitiators for Free Radical Cationic andAnionic Polymerisation ", second edition, author J.V.Crivello ﹠amp; K.Dietliker, it is write by G.Bradley and by John Wiley ﹠amp; Sons and SITA TechnologyLimited published in 1998; " Exploring the Science, Technology andApplications of UV and EB Curing ", R.S.Davidson, SITA TechnologyLtd., London, 1999, its disclosure is merged in this paper by reference.
Used light trigger does not preferably need additionally to use the sort of of amine synergist, and especially, preferably said composition should not comprise the unhindered amina synergist of non-acrylateization.
As preferably, accepting under the situation that coating is a white, preferably light trigger should be not flavescence usually.Yet, to accept under the situation that coating is another kind of color, this is not necessarily.
Usually, it should be such accepting coating: when using by serigraphy, form film thereby accept the abundant wetting optical disc substrate of coating in substrate.Accept coating and adhere to well, can make and accept coating and adhere on the disk well, and do not have to expand or make the disc material distortion, therefore promote good adhesion in other mode to disc material or spin coating.
Composition of the present invention also comprises the surfactant that is used to improve for example smooth, wetting and antifoam performance.These surface reactive materials should have the low tendency that migrates to coating surface and therefore its acceptance is had a negative impact.Suitable material is not contain organosilyl and can is polymkeric substance in nature.Such examples for compounds comprises polyacrylate, mineral oil blends, low temperature wax dispenser and paraffin dispersion, for example Modaflow TM(Cytec), BYK A501 (BYK), Bevaloid 6681 (Rhone Poulenc), BYK 1790, BYKA500, BYK A560, Tego Airex 910 and Tego Airex 920. (Goldschmidt), it can help the degassing of uncured composition.If expectation, fluorine surfactant can be added in the composition, to improve moistened surface during use.The commercial embodiments of such fluorine surfactant comprise from Dupont Zonyl FSN100, Zonyl FSO100 and from the Fluorad 4430 of 3M.
Be used to prepare the composition that the present invention accepts coating and can randomly comprise pigment or other colorant, preferably pigment.In the context of the present invention, the material of giving true visible color contained in term " colorant ", and it can be and be preferably white.By the weight of total composition, Chinese white is normally involved with the amount of about 40-50%.Yet the actual amount of used colorant can change in wide scope, and this depends on the character of colorant, for example by weight in 1 to 60% scope, more preferably by weight in 7 to 50% scope.If the expectation coating is transparent, do not need to comprise colorant so.
In broad terms, colorant should be considered to be divided into two classes, i.e. dyestuff, and it is soluble basically in ink composition; And pigment, it is that form with particulate is dispersed in the ink composition, if necessary is to disperse down the auxiliary of suitable dispersant.Pigment is selected from the kind of wide region, for example pigment red 146, paratonere 170, pigment red 4 8:2, pigment red 122, pigment blue 15: 3, pigment Violet 23, pigment Green 7, pigment yellow 83, pigment yellow 13, pigment yellow 17, pigment black 7.Other example of suitable pigments is at " Printing Ink Manual ", fourth edition, and Leach R.H.et al. (eds.), Van Nostrand Reinhold, Wokingham provides in (1988), and its disclosure is merged in this paper by reference.Yet if you are using, pigment optimization ground is Chinese white, for example Pigment white 6 titania such as Kemera RDI-S, Kronos 1070, Kronos 1071, Tipure R706, perhaps zinc paste, zinc sulphide or barium sulphate, wherein titania is preferred.In order to reach special effect, if expectation can be used any two or more combination of these colorants.
In order further to improve China ink during printing treatment or behavior afterwards and outward appearance, these preparations can also comprise extender or filler.The typical general example of preferred filler and extender is chalk, talcum, porcelain earth and other the aluminium hydroxide and the silicate of synthetic and natural grades.They are to be known commercial with many brand names, and the example has Calcigloss, Microtalc, Speswhite, Spacerite and Zeolex.
In order to produce preferred rheological behavior in serigraphy, these preparations can also carry out modification as smoking silicon dioxide or activated bentonite with a small amount of structural additives.The example of material has the Aerosil from Degussa like this; Bentone SD1, Bentone SD2, Bentone 34 are from Elementis; With Tixogel DS, Tixogel VPA, TixogelMP 100 from Sud Chemie.
The various compositions of the present composition can exist with the amount of wide region, and this depends on the expectation physics and the chemical property of final solidified coating.Yet usually, preferred use by weight 1 to 60%, more preferably 20 to 40% radiation-curable pre-polymers; By weight 5 to 60%, 20 to 40% radiation-curable monomer more preferably; By weight 0 to 15%, 0 to 8% light trigger more preferably; By weight 0 to 5%, 0 to 3% smooth adjuvant preferably; By weight 1 to 60%, preferably 7 to 50% pigment and/or filler and/or extender (if you are using); By weight 0.1 to 8%, 0.2 to 5% structural additives (if you are using) preferably.
Composition of the present invention can be prepared by simple mixing well known in the art and dispersion technology, and can be applied on the CD by any well-known printing technology, as serigraphy, rotary coating, bat printing or flexographic printing, preferred serigraphy.A whole surface of CD can be applied, and perhaps just a part is applied.This coating can adopt any well-known radiation curing technology to be cured then.
The present invention is further set forth by following non-limiting examples.
Embodiment 1
Following serigraphy ink composition prepares as follows: at first with each material premixed, the gained potpourri of milling on three-roll mill then is until reaching＜grinding of 12 microns (μ m).
Epoxy acrylate-Ebecryl 3701, from Cytec 28.0
The N-caprolactam is from BASF 12.9
Monomer-Ebecryl 110, from Cytec 4.7
Lucirin TPO is from Ciba 4.0
Stabilizing agent 0.2
BYK A501 is from BYK Chemie 1.1
Titanium dioxide white pigment, anatase 49.1
100.0
Gained serigraphy ink composition is printed on the light medium substrate (CDR, DVD-R) by the 150-31 mesh screen, and adopts medium pressure mercury lamp (80Wcm -1) be cured.Adopt commercial UV ink-jet, by XAAR Omnijet 318 piezoelectricity DOD print heads, on cured coating, and UV solidifies with 4 color high definition degree test pattern spray printings.Check the picture quality and the permanance of gained printed article.The result is presented in the following table 1.
Embodiment 2
Following screen ink composition prepares as follows: at first with each material premixed, the gained potpourri of milling on three-roll mill then is until reaching＜grinding of 12 microns (μ m).
Epoxy acrylate-Ebecryl 3701, from Cytec 29.4
The N-caprolactam is from BASF 13.7
Monomer-Ebecryl 110, from Cytec 7.7
Lucirin TPO is from Ciba 3.9
Stabilizing agent 0.2
BYK A501 is from BYK Chemie 1.0
Titanium dioxide white pigment, anatase 39.2
Silica 4.9
100.0
Gained serigraphy ink composition is printed on the light medium substrate (CDR, DVD-R) by the 150-31 mesh screen, and adopts medium pressure mercury lamp (80Wcm -1) be cured.Adopt commercial UV ink-jet, by XAAR Omnijet 318 piezoelectricity DOD print heads, on cured coating, and UV solidifies with 4 color high definition degree test pattern spray printings.To gained printed article checks fie image quality and permanance.The result is presented in the following table 1.
Embodiment 3
Following screen ink composition prepares as follows: at first with each material premixed, the gained potpourri of milling on three-roll mill then is until reaching＜grinding of 12 microns (μ m).
Epoxy acrylate-Ebecryl 605/20, from Cytec 30.7
The N-caprolactam is from BASF 14.2
Monomer-Ebecryl 110, from Cytec 7.9
Lucirin TPO is from Ciba 4.1
Stabilizing agent 0.2
BYK A501 is from BYK Chemie 1.0
Titanium dioxide white pigment, anatase 40.9
Silica 1.0
100.0
Gained serigraphy ink composition is printed on the light medium substrate (CDR, DVD-R) by the 150-31 mesh screen, and adopts medium pressure mercury lamp (80Wcm -1) be cured.Adopt commercial UV ink-jet, by XAAR Omnijet 318 piezoelectricity DOD print heads, on cured coating, and UV solidifies with 4 color high definition degree test pattern spray printings.To gained printed article checks fie image quality and permanance.The result is presented in the following table 1.
Embodiment 4 (comparison)
This embodiment uses silicone defoaming agent to replace the organosilyl smoothing agent that do not contain of the present invention.
Following screen ink composition is prepared as follows: at first with each material premixed, the gained potpourri of milling on three-roll mill then is until reaching＜grinding of 12 microns (μ m).
Epoxy acrylate-Ebecryl 3701 is from Cytec 24.2
The N-caprolactam is from BASF 12.5
Monomer-Ebecryl 110, from Cytec 12.2
Lucirin TPO is from Ciba 3.5
Stabilizing agent 0.2
Silicone defoaming agent 0.7
Wetting agent Zonyl FSN100 0.5
Titanium dioxide white pigment, anatase 46.0
Silica 0.2
100.0
Gained serigraphy ink composition is printed on the light medium substrate (CDR, DVD-R) by the 150-31 mesh screen, and adopts medium pressure mercury lamp (80Wcm -1) be cured.Adopt commercial UV ink-jet, by XAAR Omnijet318 piezoelectricity DOD print head, on cured coating, and UV solidifies with 4 color high definition degree test pattern spray printings.To gained printed article checks fie image quality and permanance.The result is presented in the following table 1.
Embodiment 5
Following screen ink composition is prepared as follows: at first with each material premixed, the gained potpourri of milling on three-roll mill then is until reaching＜grinding of 12 microns (μ m).
Urethane acrylate-CN982/388 is from Cray Valley 29.5
The N-caprolactam is from BASF 6.9
Monomer-Sartomer 238, from Cray Valley 9.9
Monomer-Sartomer 256, from Cray Valley 5.0
Irgacure?907 1.0
Lucirin TPO is from Ciba 3.8
Stabilizing agent 0.4
BYK A501 is from BYK Chemie 1.1
Titanium dioxide white pigment, rutile 41.7
Silica 0.7
100.0
Gained serigraphy ink composition is printed on the light medium substrate (CDR, DVD-R) by the 150-31 mesh screen, and adopts medium pressure mercury lamp (80Wcm -1) be cured.Adopt commercial UV ink-jet, by XAAR Omnijet 318 piezoelectricity DOD print heads, on cured coating, and UV solidifies with 4 color high definition degree test pattern spray printings.To gained printed article checks fie image quality and permanance.The result is presented in the following table 1.
Figure A200780025423D00171

Claims (14)

1. CD, it has readable of light and printing surface, described printing surface has the coating of accepting of radiation curing, the described coating of accepting forms by the composition that comprises prepolymer, at least a monomer and smooth adjuvant is carried out radiation curing, described composition does not contain any surface modified additive that disturbs impressionability, and described cured compositions is water insoluble and do not absorb water.
2. CD according to claim 1, wherein said smooth adjuvant is polyacrylate, mineral oil blends, low temperature wax dispenser or paraffin dispersion, and does not contain organosilicon.
3. composition according to claim 1 and 2, wherein said prepolymer are the epoxidised soybean oil of amine, acrylic acid saturated resin, acrylic acrylate, cycloaliphatic epoxides, phenol epoxy novolac or acroleic acid esterification of oil, urethane acrylate, polyester acrylate, polyether acrylate, the acroleic acid esterification of epoxy acrylate, acroleic acid esterification.
4. composition according to claim 3, wherein said prepolymer is an epoxy acrylate.
5. according to each described composition of aforementioned claim, wherein said prepolymer has 35mN/m (dyne/cm at least 2) surface tension.
6. composition according to claim 5, wherein said prepolymer has 38mN/m (dyne/cm at least 2) surface tension.
7. according to each described composition of aforementioned claim, wherein said monomer is acrylate, methacrylate, vinyl compound or can be by open loop mechanism polymeric compounds.
8. according to each described composition of aforementioned claim, wherein said monomer has 32mN/m (dyne/cm at least 2) surface tension.
9. composition according to claim 8, wherein said monomer has 35mN/m (dyne/cm at least 2) surface tension.
10. according to each described composition of aforementioned claim, it comprises light trigger in addition.
11. method for preparing CD with readable of light and printing surface, wherein following composition is administered to described printing surface and carries out radiation curing, described composition comprises prepolymer, at least a monomer and smooth adjuvant and comprise light trigger under the situation of solidifying by ultraviolet energy, described composition does not contain any surface modified additive that can disturb impressionability, and cured compositions is water insoluble and do not absorb water.
12. method according to claim 11, wherein said composition are as each described composition in the claim 2 to 10.
13. according to claim 11 or 12 described methods, wherein said coating composition is applied on the described CD by serigraphy, rotary coating, bat printing or flexographic printing.
14. a method, wherein with the ink-jet spray printing of radiation-curable to described printing surface according to each described CD of claim 1 to 10, and radiation curing subsequently.
CNA2007800254237A 2006-05-05 2007-05-03 A method of printing on optical discs Pending CN101484946A (en)

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