CN109839803A - A kind of heat susceptible coating for exempting from processing CTP editions suitable for water development - Google Patents
A kind of heat susceptible coating for exempting from processing CTP editions suitable for water development Download PDFInfo
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- CN109839803A CN109839803A CN201910070888.9A CN201910070888A CN109839803A CN 109839803 A CN109839803 A CN 109839803A CN 201910070888 A CN201910070888 A CN 201910070888A CN 109839803 A CN109839803 A CN 109839803A
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Abstract
The invention discloses a kind of heat susceptible coatings for exempting from processing CTP editions suitable for water development.The coating with water development liquid good compatibility, plate-making can be developed by water, avoid the discharge of chemical development liquid and develop environmental pollution brought by the discharge of flushing water the problem of, also reduce use cost；Heat cross-linking resin and the optical cross-linked resin sensitivity also with higher obtained by multiple aggregation extends the service life of laser so as to reduce the laser power of platemaking machine, while also preventing coating since the degree of cross linking is not enough and the phenomenon that cause press resistance rate to reduce.
Description
Technical field
The present invention relates to printing technologies, and in particular to a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development.
Background technique
Domestic traditional CT P editions need alkaline-based developer to develop, and thus bring waste developing solution discharge and development is rinsed
The problem of environmental pollution brought by the discharge of water.The unprocessed discharge of waste developing solution has been forbidden in many cities at present, it is necessary to
It is recycled through qualified department.Thus add additional use cost.
Instantly occurring a large amount of flushing-free version in the market, flushing-free version is exactly no development flushing link, after plate exposure,
Without development, directly upper printing machine develops to image under the action of developer solution and ink, shows the part got off by paper tape
It walks.Development link is thus eliminated, certainly without developer solution, less there is the discharge of developer solution, there are no environmental pollutions to ask
Topic.
Flushing-free version still has larger problem in printing process, i.e., in the detection that can not carry out site and image,
Be easy to ignore blind version and scumming, in turn result in material and artificial waste, not can guarantee product quality not only, and also result in compared with
Big cost consumption.
Therewith one kind exempt from be chemically treated version come into being, that is, be not necessarily to chemical treatments, our popular saying is water development-type
Exempt to handle version.Water development-type exempts from processing version and still needs to develop, but since developer solution is water, no chemical pollutant, it is possible to
Non-treated discharge, non-environmental-pollution problem.
But it is more harsh to the component requirement of coating to exempt to be chemically treated version, it not only will be in view of to the sensitive journey of light and heat
Degree, but also to have stronger compatibility to water development liquid, while also to have preferable sensitivity, so to exempting to be chemically treated
The heat-sensitive layer component research of version is the most important thing of this field development.
Summary of the invention
It is an object of the present invention in view of the above shortcomings of the prior art, propose that a kind of water development that is suitable for exempts to handle CTP
The heat susceptible coating of version, it is well compatible with water development liquid, and there is stable high sensitivity and higher press resistance rate.
The present invention proposes a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development, includes heat cross-linking tree by mass parts
25-35 parts of rouge, 20-28 parts of optical cross-linked resin, 12-18 parts of performed polymer, 8-15 parts of polyfunctional monomer, 10-16 parts of infrared absorbing agents
With 5-8 parts of photoinitiator.
Further, the heat cross-linking resin is styrene, methacrylonitrile, amino unsaturated double-bond and contains branched hydrophilic
Group multi-component copolymer generates.
Further, the group containing branched hydrophilic is one or more of amide groups, ether, pyrrolidone-base.
Wherein styrol structural unit controls glass transition temperature, and amino unsaturated double-bond structural unit realizes light-exposed part parent
Aqueous to become lipophilic, group containing branched hydrophilic then enhances development effect.
Further, the optical cross-linked resin is that alkenes unsaturated group and sulfonic acid group copolymerization generate.Sulfonic acid group can
To guarantee having preferable water solubility, when being convenient for water development, better effect can be obtained.
Further, the performed polymer is esters of acrylic acid, Epoxy Acrylates, polyurethane acrylates, polyethers
One of esters of acrylic acid and organic silicon.
Further, the performed polymer is polyurethane acrylates.Since polyurethanyl group tool has good wearability,
So the present invention preferentially selects.
Further, the polyfunctional monomer is methacryloyloxyethyl acetoacetic ester and ethoxy trimethylolpropane tris third
One of olefin(e) acid ester.
Further, the infrared absorbing agents are phthalocyanine dye.Phthalocyanine dye has absorption maximum in 780-850 range, more
Added with the excitation for being conducive to heat-sensitive layer；Phthalocyanine dye has good water-soluble and system compatibility simultaneously.
Further, the phthalocyanine dye needs first chlorination, then carries out esterification with polyhydroxy acrylic acid.
Further, the initiator is hexafluorophosphoric acid diphenyl iodnium.
It is provided by the invention it is a kind of exempt from CTP editions heat susceptible coatings of processing suitable for water development, the coating with water development liquid
Good compatibility, plate-making can be developed by water, avoid the discharge institute band of the discharge of chemical development liquid and the flushing water that develops
The problem of environmental pollution come, also reduce use cost；The heat cross-linking resin and optical cross-linked resin obtained by multiple aggregation
Sensitivity also with higher extends the service life of laser so as to reduce the laser power of platemaking machine, while also preventing coating
Since the degree of cross linking is not enough and the phenomenon that cause press resistance rate to reduce.
Specific embodiment
For present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, various changes or modification that those skilled in the art make the present invention, this
A little equivalent forms are equally fallen in the application range claimed.Proportion in the embodiment of the present invention is by weight.
Embodiment 1
The coating obtained through the invention is directly made a plate；
Version base processing: using the aluminum substrate (surface roughness 0.4um is not necessarily to electrochemistry subsequent processing) of 0.4mm, first it is with concentration
18% NaOH solution is rinsed aluminium plate primary surface, and washing time is controlled in 35-45s；After flushing, with water to version base surface
It is rinsed, rinsing to pH value is neutral (being detected with pH test paper)；Using concentration again is 20% nitric acid solution to aluminium plate base table
Face is rinsed, and washing time is controlled in 25-30s；After flushing, version base surface is rinsed with water, rinses to pH value and is
Property (being detected with pH test paper), finally carry out drying and processing, drying temperature will be 90-110 DEG C, drying time 45-55s.
Version base coating: the coating of photosensitive layer, coating weight 1.3-2.0g/m are carried out using coating machine to version base2, photosensitive layer presses
Mass parts include 25 parts of heat cross-linking resin, 20 parts of optical cross-linked resin, 12 parts of urethane acrylate, methacryloyloxyethyl acid second
8 parts of ester, 10 parts of phthalocyanine dye and 5 parts of hexafluorophosphoric acid diphenyl iodnium；After drying, drying, protected in photosensitive layer surface
Layer coating, 9 parts of PVAC polyvinylalcohol are coated, coating amount be 2.5-3.0g/ ㎡ to get arrive a kind of double coating water developments
Exempt from processing CTP editions.
The styrene nano-micro level particle branch introducing used in the specific embodiment of the invention has hydrophobic group-CH3；Heat cross-linking
Resin is that styrene, methacrylonitrile, amino unsaturated double-bond and the multi-component copolymer of group containing branched hydrophilic generate；Alkenes are unsaturated
Group and sulfonic acid group copolymerization generate.
Embodiment 2
The coating obtained through the invention is directly made a plate；
Version base processing: using the aluminum substrate (surface roughness 0.4um is not necessarily to electrochemistry subsequent processing) of 0.4mm, first it is with concentration
18% NaOH solution is rinsed aluminium plate primary surface, and washing time is controlled in 35-45s；After flushing, with water to version base surface
It is rinsed, rinsing to pH value is neutral (being detected with pH test paper)；Using concentration again is 20% nitric acid solution to aluminium plate base table
Face is rinsed, and washing time is controlled in 25-30s；After flushing, version base surface is rinsed with water, rinses to pH value and is
Property (being detected with pH test paper), finally carry out drying and processing, drying temperature will be 90-110 DEG C, drying time 45-55s.
Version base coating: carrying out the coating of photosensitive layer, coating weight 1.3-2.0g/m2 to version base using coating machine, and photosensitive layer is pressed
Mass parts include 30 parts of heat cross-linking resin, 24 parts of optical cross-linked resin, 15 parts of urethane acrylate, methacryloyloxyethyl acid second
11 parts of ester, 13 parts of phthalocyanine dye and 6 parts of hexafluorophosphoric acid diphenyl iodnium；After drying, drying, protected in photosensitive layer surface
The coating of layer, 12 parts of PVAC polyvinylalcohol are coated, and coating amount is 2.5-3.0g/ ㎡ to get aobvious to a kind of double coating water
Shadow exempts from processing CTP editions.
The styrene nano-micro level particle branch introducing used in the specific embodiment of the invention has hydrophobic group-CH3；Heat cross-linking
Resin is that styrene, methacrylonitrile, amino unsaturated double-bond and the multi-component copolymer of group containing branched hydrophilic generate；Alkenes are unsaturated
Group and sulfonic acid group copolymerization generate.
Embodiment 3
The coating obtained through the invention is directly made a plate；
Version base processing: using the aluminum substrate (surface roughness 0.4um is not necessarily to electrochemistry subsequent processing) of 0.4mm, first it is with concentration
18% NaOH solution is rinsed aluminium plate primary surface, and washing time is controlled in 35-45s；After flushing, with water to version base surface
It is rinsed, rinsing to pH value is neutral (being detected with pH test paper)；Using concentration again is 20% nitric acid solution to aluminium plate base table
Face is rinsed, and washing time is controlled in 25-30s；After flushing, version base surface is rinsed with water, rinses to pH value and is
Property (being detected with pH test paper), finally carry out drying and processing, drying temperature will be 90-110 DEG C, drying time 45-55s.
Version base coating: carrying out the coating of photosensitive layer, coating weight 1.3-2.0g/m2 to version base using coating machine, and photosensitive layer is pressed
Mass parts include 35 parts of heat cross-linking resin, 28 parts of optical cross-linked resin, 18 parts of urethane acrylate, methacryloyloxyethyl acid second
15 parts of ester, 16 parts of phthalocyanine dye and 8 parts of hexafluorophosphoric acid diphenyl iodnium；After drying, drying, protected in photosensitive layer surface
The coating of layer, 15 parts of PVAC polyvinylalcohol are coated, and coating amount is 2.5-3.0g/ ㎡ to get aobvious to a kind of double coating water
Shadow exempts from processing CTP editions.
The styrene nano-micro level particle branch introducing used in the specific embodiment of the invention has hydrophobic group-CH3；Heat cross-linking
Resin is that styrene, methacrylonitrile, amino unsaturated double-bond and the multi-component copolymer of group containing branched hydrophilic generate；Alkenes are unsaturated
Group and sulfonic acid group copolymerization generate.
Evaluation:
Sensitivity detection: sensitivity is the energy that photosensitive layer obtains extraneous excitation in unit area, i.e., photosensitive layer is in the excitation energy
Radiation issues heat and melts thermoplastic cross-linking reaction, unit mj/cm2, numerical value is smaller to be illustrated sensitivity higher (sensitivity is too low, then needs
The laser power of platemaking machine is excessively high, impairs laser service life；It also be easy to cause and is wanted because obtained energy is not achieved simultaneously
Derivation causes the coating degree of cross linking not enough press resistance rate to be caused to reduce), irradiated area (i.e. version base effective area) is 100-400cm2, spoke
According to source strength 10-60W, irradiation intensity is unitary variant when detection, in incrementally detecting, and records each sample sensitivity；
The detection of resistance to printing amount: within the scope of the printing quality of rule, maximum printing amount that printing plate can reach；
Stablize timeliness: i.e. under naturally occurring state, guaranteeing the maximum conserving time limit under 95% resistance to printing amount；
Using Screen 8600M-S type CTP platemaking machine.
More than the plate-making service condition of embodiment 1, embodiment 2 and embodiment 3 and commercially available Agfa Azura editions progress
Data are detected and are collected, and testing result is shown in Table 1:
Table 1
By table 1 it is found that embodiment 1, embodiment 2 and embodiment 3 in the present invention are marked with commercially available famous brand Agfa Azura editions
Quasi- data are very close, and have biggish advantage, especially stable timeliness in sensitivity, resistance to printing amount and stable timeliness data
Difference, compare Agfa Azura edition, product of the invention take it is resistance to store 3 months, not only reduce purchase cost, while also mentioning
The high stability of product quality, the present invention have stronger home brands competitiveness.
Exemplary illustration is carried out to the embodiment of the present invention above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.All the changes and improvements etc. of all application ranges according to the present invention,
It should all fall within the scope of the patent of the present invention.
Claims (10)
1. a kind of exempt from CTP editions heat susceptible coatings of processing suitable for water development, it is characterised in that: by mass parts include heat cross-linking resin
25-35 parts, 20-28 parts of optical cross-linked resin, 12-18 parts of performed polymer, 8-15 parts of polyfunctional monomer, 10-16 parts of infrared absorbing agents and
5-8 parts of photoinitiator.
2. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as described in claim 1, it is characterised in that: described
Heat cross-linking resin is that styrene, methacrylonitrile, amino unsaturated double-bond and the multi-component copolymer of group containing branched hydrophilic generate.
3. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as claimed in claim 2, it is characterised in that: described
Group containing branched hydrophilic is one or more of amide groups, ether, pyrrolidone-base.
4. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as described in claim 1, it is characterised in that: described
Optical cross-linked resin is that alkenes unsaturated group and sulfonic acid group copolymerization generate.
5. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as described in claim 1, it is characterised in that: described
Performed polymer is in esters of acrylic acid, Epoxy Acrylates, polyurethane acrylates, polyoxyalkylene acrylate esters and organic silicon
One kind.
6. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as described in claim 1, it is characterised in that: described
Performed polymer is polyurethane acrylates.
7. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as described in claim 1, it is characterised in that: described
Polyfunctional monomer is one of methacryloyloxyethyl acetoacetic ester and ethoxy trimethylolpropane trimethacrylate.
8. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as described in claim 1, it is characterised in that: described
Infrared absorbing agents are phthalocyanine dye.
9. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as claimed in claim 8, it is characterised in that: described
Phthalocyanine dye needs first chlorination, then carries out esterification with polyhydroxy acrylic acid.
10. a kind of heat susceptible coating for exempting from processing CTP editions suitable for water development as described in claim 1, it is characterised in that: described
Initiator is hexafluorophosphoric acid diphenyl iodnium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910070888.9A CN109839803A (en) | 2019-01-25 | 2019-01-25 | A kind of heat susceptible coating for exempting from processing CTP editions suitable for water development |
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| CN201910070888.9A CN109839803A (en) | 2019-01-25 | 2019-01-25 | A kind of heat susceptible coating for exempting from processing CTP editions suitable for water development |
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Address after: 242200 No. 37, Pengju Road, Guangde Economic Development Zone, Xuancheng City, Anhui Province Applicant after: Anhui Qiangbang New Material Co.,Ltd. Address before: 242200 No. 37, Pengju Road, Guangde Economic Development Zone, Xuancheng City, Anhui Province Applicant before: ANHUI STRONG STATE PRINTING MATERIAL Co.,Ltd. |
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Application publication date: 20190604 |