CN106675197A - High-performance printing ink coating for ink-jet printing machine - Google Patents
High-performance printing ink coating for ink-jet printing machine Download PDFInfo
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- CN106675197A CN106675197A CN201510766350.3A CN201510766350A CN106675197A CN 106675197 A CN106675197 A CN 106675197A CN 201510766350 A CN201510766350 A CN 201510766350A CN 106675197 A CN106675197 A CN 106675197A
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Abstract
The invention discloses a high-performance printing ink coating for an ink-jet printing machine. The coating is prepared from the following raw materials in percentages by mass: 5-8% of chloride-vinyl acetate resin, 65-76% of butanone, 8-15% of butyl acetate, 1-2% of dioctyl phthalate, 0.5-1% of an adhesion promoter, 0.5-2% of diethyl hexyloxy propylamine and 0.2-2% of paraffin. According to the coating disclosed by the invention, by selecting the chloride-vinyl acetate resin as resin, in a molecular structure thereof, as a nonpolar molecule vinyl acetate is inlaid into a vinyl chloride chain, the polarity of the original molecule is reduced, so that the ability of resisting dissolution by a polar solvent is enhanced; by selecting butanone and butyl acetate as a mixed solvent, the butanone and butyl acetate are mutually dissolved to form a certain ion pair, and the repulsive force among the macromolecular chains can be enhanced, so that macromolecules in the printing ink can be better dispersed; and after the solvent is volatilized and dried, a uniform dense printing film can be formed, so that the alcohol resistance of the printing ink can be increased.
Description
Technical field
The present invention relates to technical field of ink, is especially for the High-performance ink coating of ink jet numbering machine.
Background technology
With the growing interest to safety problem, existing legal provisions must indicate the explanation for date of manufacture, lot number, shelf-life etc. protecting consumers' rights and interests on the label of the products such as food, medicine, cosmetics.It is widely used in label explanation because code-spraying printing ink has a series of excellent properties such as clear writing, stable performance, scrubbing resistance.But, the alcohol resistance of existing code-spraying printing ink is still poor, and especially on the product surface for needing Jing often to clean, ink erasibility is poor, can affect the definition of product outside sign.In addition, in view of the enhancing of environmental consciousness, especially in the packaging in the fields such as food, medicine, cosmetics, to the environmental-protecting performance of code-spraying printing ink new challenge is it is also proposed.
The content of the invention
The purpose of the present invention is the defect for overcoming above-mentioned prior art, there is provided for the High-performance ink coating of ink jet numbering machine, has the advantages that viscosity is low, alcohol resistance is good, adhesive force is strong, quick-drying is suitable, stability is high.
The purpose of the present invention is achieved through the following technical solutions：
For the High-performance ink coating of ink jet numbering machine, it is obtained by the raw material of following mass fraction：Vinyl chloride-vinyl acetate resin 5 ~ 8%, butanone 65 ~ 76%, butyl acetate 8 ~ 15%, dioctyl phthalate 1 ~ 2%, adhesion promoter 0.5 ~ 1%, diethyl hexyloxy propylamine 0.5 ~ 2%, paraffin 0.2 ~ 2%.
In the present invention, there is ink certain solvent resistant scouring performance to be primarily referred to as resistance to ethanol scouring performance, namely require that selected raw material solubility in ethanol is low or insoluble.In four big components of ink system, resin is most important of which is that, many performances of ink including alcohol resistance scrubbing performance are determined by selected resin.Vinyl chloride-vinyl acetate resin be by VCM and vinyl acetate in the presence of initiator copolymerization and obtain, in the molecular structure of vinyl chloride-vinyl acetate resin, in due to the embedded vinyl chloride chain of nonpolar molecule vinyl acetate, so the polarity of original molecule is reduced, so as to enhance the ability of its resistance to polar solvent dissolving.Thus vinyl chloride-vinyl acetate resin has excellent alcohol resistance, dissolution degree in ethanol is less, is relatively suitable as the matrix resin of alcohol resistance scrubbing ink.
Equally, solubility parameter also provides directive guidance for the selection of solvent.In addition, according to the principle of similar compatibility, the selection of solvent also needs compatible with vinyl chloride-vinyl acetate resin.Due to the special use condition of code-spraying printing ink, selected solvent should also as far as possible embody environmental-protecting performance, low irritant smell, and volatilize soon to ensure quick-drying.By realizing finding, at the same temperature, vinyl chloride-vinyl acetate resin in ketones solvent, especially in butanone, solubility is higher, dissolving faster.Meanwhile, the volatility of butanone is good, meets the quick-drying needed for product and requires.Thus, the present invention is main solvent from butanone.To obtain preferable combination property, stablizing for the evaporation rate balance and holding ink when can also realize printing-ink film forming also needs to increase secondary solvent.On the basis of consideration and main solvent butanone and matrix resin vinyl chloride-vinyl acetate resin compatibility, the present invention is from butyl acetate as secondary solvent, it can preferably dissolve each other with butanone, and form certain ion pair, the repulsion between macromolecular chain can be increased, so that the macromolecule in ink preferably disperses, after solvent volatile dry, the ink film of even compact can be formed, thus the alcohol resistance energy of ink can be increased.But, with the increase of quantity of solvent in ink, therefore the alcohol resistance of ink can be deteriorated, this is because in the case of dye content inconvenience, when quantity of solvent increases, correspondingly, the amount of resin in ink will be reduced, so as to the ink film thicknesses for being formed just occur insufficient situation to the cladding of the materials such as dyestuff, and then the alcohol resistance energy of ink can be substantially reduced.Therefore, the mass fraction of butanone is controlled 65 ~ 76% in the present invention, and the mass fraction of butyl acetate is controlled 8 ~ 15%.
Ink colouring agent is divided into pigment and the big class of dyestuff two, compared with solvent dye, the alcohol resistance of the ink being made up of pigment is preferable, it is substantially insoluble in alcohol, but the viscosity using the made ink of pigment is too big, and dispersiveness is not so good as solvent dye, thus the present invention selects solvent dye as colouring agent.Because solvent dye is slightly soluble in alcohol, especially when its content in ink is more than 10%, alcohol resistance is gradually deteriorated；And when being less than 5%, the colourity of ink is again weaker, requirement is not reached, therefore the mass fraction of solvent dye is 5 ~ 10%.
The deflection of ink drop is controlled when ink jet numbering machine works carried out by the carried charge of ink itself, thus requires that ink has certain carried charge.And in ink component, solvent dye is inherently with some electric charge, but the electricity of these electric charges does not also reach requirement, thus must be added to a small amount of conducting salt, so that code-spraying printing ink can produce predetermined deflection under ink jet numbering machine normal work.In the selection of conducting salt, equally it is considered as having preferably compatibility with mixed solvent, and suitable electrical conductivity can be provided.The present invention is from diethyl hexyloxy propylamine as conductive auxiliary agent.Because the electric conductivity of matrix resin vinyl chloride-vinyl acetate resin itself is higher, therefore compared with other resin ink, the addition of conducting salt accordingly will be lacked.In addition, when conductive salt content is more than 2%, ink forms crystallization easily at coding machine nozzle, so as to plug nozzle, so the mass fraction of diethyl hexyloxy propylamine is controlled 0.5 ~ 2%.
The solvent-resisting of code-spraying printing ink is closely bound up with the surface appearance of ink, and the film of surface ethanol-tolerant is thicker, and alcohol resistance is stronger, and such as in the wax powder of one layer this iris action of resin film overlying, then the alcohol resistance of ink will strengthen.Herein from paraffin as solvent resistant auxiliary agent.It is found through experiments, with the increase of paraffin content, the alcohol resistance of ink increased, but when more than 2%, then has insoluble matter to occur in ink.Therefore, the mass fraction of paraffin is controlled 0.2 ~ 2% in the present invention.
Plasticizer is a kind of higher boiling, low-volatile fixation or liquid compound, is mainly used to increase the plasticity of polymer substance.Plasticizer is little due to molecular weight, when mixing with the macromolecular compound such as resin, can penetrate between macromolecular long-chain, play a part of similar lubrication, make molecular resin long-chain potential motion freer, so that polymer becomes soft and high resilience, increase the pliability of ink.Little additionally, due to molecular weight, volume less, can be enriched between the chain link of macromolecular, increase its spacing, and the attraction for making interchain is reduced, and reduce the trend that embrittlement is wrecked, and adhesive force is effectively increased to a certain extent.The present invention from dioctyl phthalate as plasticizer, it can to vinyl chloride-vinyl acetate resin molecule in main side chain play iris action, the active force between polymer molecule is reduced, so as to strengthen adhesive force.When consumption is below 2%, adhesive force increases with the increase of consumption；During more than 2%, the adhesive force of ink increases less or even without growth, and quick-drying performance is reduced, and viscosity increase, film performance is reduced.Therefore, the mass fraction of dioctyl phthalate of the present invention is controlled 1 ~ 2%.Due to predicting the material that code-spraying printing ink is used, and the adhesive force of ink has substantial connection with ground, falls off to prevent script from adhering to excellent ink, the adhesion performance that can increase some adhesion promoters to keep ink film excellent.During due to addition more than 1%, ink occurs cotton-shaped liquid, therefore the mass fraction of adhesion promoter of the present invention is maintained at 0.5 ~ 1%.
Further, the butanone and the mass ratio of the butyl acetate are 5 ~ 6:1.It is shown experimentally that, as the amount of butyl acetate increases, mixed solvent can play larger humidification to the alcohol resistance of ink, when the ratio of butanone and butyl acetate reaches 5:1 to 6:When between 1, its alcohol resistance is most strong, just on a declining curve afterwards.Its reason is when butyl acetate is less, it is impossible to form enough molecules pair with butanone, therefore unobvious to the humidification of alcohol resistance energy.
To realize preferable combination property, further, it is obtained by the raw material of following mass fraction：Vinyl chloride-vinyl acetate resin 6%, solvent dye 8%, dioctyl phthalate 2%, adhesion promoter 1%, diethyl hexyloxy propylamine 1%, paraffin 0.5%, balance of butanone and butyl acetate.Obtained ink ethanol-tolerant of the invention can reach 12.5s, viscosity 2.6cP, and quick-drying E value is 4.0, and stability a is 1.02.
It is preferably compatible with mixed solvent, further, the vinyl chloride-vinyl acetate resin includes polymer V1 and polymer V2, polymer V1 is obtained by the vinyl chloride and mass fraction that mass fraction is 96% for 4% vinyl acetate copolymerization, and polymer V2 is obtained by the vinyl chloride and mass fraction that mass fraction is 85% for 15% vinyl acetate copolymerization.In the preparation of vinyl chloride-vinyl acetate resin, the percentage composition of vinyl acetate in copolymer can be controlled to reach different performance requirements by being gradually added VCM.By realizing finding, dissolubility in a solvent, the vinyl chloride-vinyl acetate resin being modified is not so good as unmodified vinyl chloride-vinyl acetate resin, thus the present invention selects polymer V1 and polymer V2.Although the vinyl chloride-vinyl acetate resin of hydroxyl dissolubility in a solvent is than crying out the vinyl chloride-vinyl acetate resin of carboxyl good, reason is because the butanone in hydroxyl and solvent can form certain hydrogen bond, and carboxyl can react with the hydroxyl in alcohol, so its alcohol resistance is slightly poor, but the addition of polymer V2 can improve adhesive force of the ink on the plastic materials such as PE, consider, selective polymer V1 and polymer V2 are used as main resin.
Further, the mass ratio of the polymer V1 and polymer V2 is 1:2.
Further, the adhesion promoter is Silquest A-1100 or Silquest A-187.
Further, the solvent dye is SLB-34.
The invention has the advantages that：In the present invention, from vinyl chloride-vinyl acetate resin as resin, in its molecular structure, because nonpolar molecule vinyl acetate is embedded in vinyl chloride chain, so the polarity of original molecule is reduced, so as to enhance the ability of its resistance to polar solvent dissolving；From butanone and butyl acetate as mixed solvent, both can dissolve each other and form certain ion pair, can increase the repulsion between macromolecular chain, so that the macromolecule in ink preferably disperses, after solvent volatile dry, the ink film of even compact can be formed, thus the alcohol resistance energy of ink can be increased.From dioctyl phthalate as plasticizer, it can to vinyl chloride-vinyl acetate resin molecule in main side chain play iris action, the active force between polymer molecule is reduced, so as to strengthen adhesive force；Adhesion promoter is added further to keep the excellent adhesion performance of ink film.The present invention has the advantages that viscosity is low, alcohol resistance is good, adhesive force is strong, quick-drying is suitable, stability is high under the requirement for meeting environmental-protecting performance.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Embodiment 1
For the High-performance ink coating of ink jet numbering machine, it is obtained by the raw material of following mass fraction：Vinyl chloride-vinyl acetate resin 5 ~ 8%, butanone 65 ~ 76%, butyl acetate 8 ~ 15%, dioctyl phthalate 1 ~ 2%, adhesion promoter 0.5 ~ 1%, diethyl hexyloxy propylamine 0.5 ~ 2%, paraffin 0.2 ~ 2%.
In the present embodiment, there is ink certain solvent resistant scouring performance to be primarily referred to as resistance to ethanol scouring performance, namely require that selected raw material solubility in ethanol is low or insoluble.In four big components of ink system, resin is most important of which is that, many performances of ink including alcohol resistance scrubbing performance are determined by selected resin.Vinyl chloride-vinyl acetate resin be by VCM and vinyl acetate in the presence of initiator copolymerization and obtain, in the molecular structure of vinyl chloride-vinyl acetate resin, in due to the embedded vinyl chloride chain of nonpolar molecule vinyl acetate, so the polarity of original molecule is reduced, so as to enhance the ability of its resistance to polar solvent dissolving.Thus vinyl chloride-vinyl acetate resin has excellent alcohol resistance, dissolution degree in ethanol is less, is relatively suitable as the matrix resin of alcohol resistance scrubbing ink.
Equally, solubility parameter also provides directive guidance for the selection of solvent.In addition, according to the principle of similar compatibility, the selection of solvent also needs compatible with vinyl chloride-vinyl acetate resin.Due to the special use condition of code-spraying printing ink, selected solvent should also as far as possible embody environmental-protecting performance, low irritant smell, and volatilize soon to ensure quick-drying.By realizing finding, at the same temperature, vinyl chloride-vinyl acetate resin in ketones solvent, especially in butanone, solubility is higher, dissolving faster.Meanwhile, the volatility of butanone is good, meets the quick-drying needed for product and requires.Thus, the present invention is main solvent from butanone.To obtain preferable combination property, stablizing for the evaporation rate balance and holding ink when can also realize printing-ink film forming also needs to increase secondary solvent.On the basis of consideration and main solvent butanone and matrix resin vinyl chloride-vinyl acetate resin compatibility, the present invention is from butyl acetate as secondary solvent, it can preferably dissolve each other with butanone, and form certain ion pair, the repulsion between macromolecular chain can be increased, so that the macromolecule in ink preferably disperses, after solvent volatile dry, the ink film of even compact can be formed, thus the alcohol resistance energy of ink can be increased.But, with the increase of quantity of solvent in ink, therefore the alcohol resistance of ink can be deteriorated, this is because in the case of dye content inconvenience, when quantity of solvent increases, correspondingly, the amount of resin in ink will be reduced, so as to the ink film thicknesses for being formed just occur insufficient situation to the cladding of the materials such as dyestuff, and then the alcohol resistance energy of ink can be substantially reduced.Therefore, the mass fraction of butanone is controlled 65 ~ 76% in the present invention, and the mass fraction of butyl acetate is controlled 8 ~ 15%.
Ink colouring agent is divided into pigment and the big class of dyestuff two, compared with solvent dye, the alcohol resistance of the ink being made up of pigment is preferable, it is substantially insoluble in alcohol, but the viscosity using the made ink of pigment is too big, and dispersiveness is not so good as solvent dye, thus the present invention selects solvent dye as colouring agent.Because solvent dye is slightly soluble in alcohol, especially when its content in ink is more than 10%, alcohol resistance is gradually deteriorated；And when being less than 5%, the colourity of ink is again weaker, requirement is not reached, therefore the mass fraction of solvent dye is 5 ~ 10%.
The deflection of ink drop is controlled when ink jet numbering machine works carried out by the carried charge of ink itself, thus requires that ink has certain carried charge.And in ink component, solvent dye is inherently with some electric charge, but the electricity of these electric charges does not also reach requirement, thus must be added to a small amount of conducting salt, so that code-spraying printing ink can produce predetermined deflection under ink jet numbering machine normal work.In the selection of conducting salt, equally it is considered as having preferably compatibility with mixed solvent, and suitable electrical conductivity can be provided.The present invention is from diethyl hexyloxy propylamine as conductive auxiliary agent.Because the electric conductivity of matrix resin vinyl chloride-vinyl acetate resin itself is higher, therefore compared with other resin ink, the addition of conducting salt accordingly will be lacked.In addition, when conductive salt content is more than 2%, ink forms crystallization easily at coding machine nozzle, so as to plug nozzle, so the mass fraction of diethyl hexyloxy propylamine is controlled 0.5 ~ 2%.
The solvent-resisting of code-spraying printing ink is closely bound up with the surface appearance of ink, and the film of surface ethanol-tolerant is thicker, and alcohol resistance is stronger, and such as in the wax powder of one layer this iris action of resin film overlying, then the alcohol resistance of ink will strengthen.Herein from paraffin as solvent resistant auxiliary agent.It is found through experiments, with the increase of paraffin content, the alcohol resistance of ink increased, but when more than 2%, then has insoluble matter to occur in ink.Therefore, the mass fraction of paraffin is controlled 0.2 ~ 2% in the present invention.
Plasticizer is a kind of higher boiling, low-volatile fixation or liquid compound, is mainly used to increase the plasticity of polymer substance.Plasticizer is little due to molecular weight, when mixing with the macromolecular compound such as resin, can penetrate between macromolecular long-chain, play a part of similar lubrication, make molecular resin long-chain potential motion freer, so that polymer becomes soft and high resilience, increase the pliability of ink.Little additionally, due to molecular weight, volume less, can be enriched between the chain link of macromolecular, increase its spacing, and the attraction for making interchain is reduced, and reduce the trend that embrittlement is wrecked, and adhesive force is effectively increased to a certain extent.The present invention from dioctyl phthalate as plasticizer, it can to vinyl chloride-vinyl acetate resin molecule in main side chain play iris action, the active force between polymer molecule is reduced, so as to strengthen adhesive force.When consumption is below 2%, adhesive force increases with the increase of consumption；During more than 2%, the adhesive force of ink increases less or even without growth, and quick-drying performance is reduced, and viscosity increase, film performance is reduced.Therefore, the mass fraction of dioctyl phthalate of the present invention is controlled 1 ~ 2%.Due to predicting the material that code-spraying printing ink is used, and the adhesive force of ink has substantial connection with ground, falls off to prevent script from adhering to excellent ink, the adhesion performance that can increase some adhesion promoters to keep ink film excellent.During due to addition more than 1%, ink occurs cotton-shaped liquid, therefore the mass fraction of adhesion promoter of the present invention is maintained at 0.5 ~ 1%.
Preferably, the butanone and the mass ratio of the butyl acetate are 5 ~ 6:1.It is shown experimentally that, as the amount of butyl acetate increases, mixed solvent can play larger humidification to the alcohol resistance of ink, when the ratio of butanone and butyl acetate reaches 5:1 to 6:When between 1, its alcohol resistance is most strong, just on a declining curve afterwards.Its reason is when butyl acetate is less, it is impossible to form enough molecules pair with butanone, therefore unobvious to the humidification of alcohol resistance energy.
To realize preferable combination property, it is preferable that be obtained by the raw material of following mass fraction：Vinyl chloride-vinyl acetate resin 6%, solvent dye 8%, dioctyl phthalate 2%, adhesion promoter 1%, diethyl hexyloxy propylamine 1%, paraffin 0.5%, balance of butanone and butyl acetate.Obtained ink ethanol-tolerant of the invention can reach 12.5s, viscosity 2.6cP, and quick-drying E value is 4.0, and stability a is 1.02.
It is preferably compatible with mixed solvent, preferably, the vinyl chloride-vinyl acetate resin includes polymer V1 and polymer V2, polymer V1 is obtained by the vinyl chloride and mass fraction that mass fraction is 96% for 4% vinyl acetate copolymerization, and polymer V2 is obtained by the vinyl chloride and mass fraction that mass fraction is 85% for 15% vinyl acetate copolymerization.In the preparation of vinyl chloride-vinyl acetate resin, the percentage composition of vinyl acetate in copolymer can be controlled to reach different performance requirements by being gradually added VCM.By realizing finding, dissolubility in a solvent, the vinyl chloride-vinyl acetate resin being modified is not so good as unmodified vinyl chloride-vinyl acetate resin, thus the present invention selects polymer V1 and polymer V2.Although the vinyl chloride-vinyl acetate resin of hydroxyl dissolubility in a solvent is than crying out the vinyl chloride-vinyl acetate resin of carboxyl good, reason is because the butanone in hydroxyl and solvent can form certain hydrogen bond, and carboxyl can react with the hydroxyl in alcohol, so its alcohol resistance is slightly poor, but the addition of polymer V2 can improve adhesive force of the ink on the plastic materials such as PE, consider, selective polymer V1 and polymer V2 are used as main resin.
Preferably, the mass ratio of the polymer V1 and polymer V2 is 1:2.
Preferably, the adhesion promoter is Silquest A-1100 or Silquest A-187.
Preferably, the solvent dye is SLB-34.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to which the specific embodiment for assert the present invention is confined to these explanations.For general technical staff of the technical field of the invention, the other embodiment drawn under without departing from technical scheme should be included in protection scope of the present invention.
Claims (7)
1. the High-performance ink coating of ink jet numbering machine is used for, it is characterised in that：It is obtained by the raw material of following mass fraction：Vinyl chloride-vinyl acetate resin 5 ~ 8%, butanone 65 ~ 76%, butyl acetate 8 ~ 15%, dioctyl phthalate 1 ~ 2%, adhesion promoter 0.5 ~ 1%, diethyl hexyloxy propylamine 0.5 ~ 2%, paraffin 0.2 ~ 2%.
2. the High-performance ink coating for ink jet numbering machine according to claim 1, it is characterised in that：The butanone is 5 ~ 6 with the mass ratio of the butyl acetate:1.
3. the High-performance ink coating for ink jet numbering machine according to claim 2, it is characterised in that：It is obtained by the raw material of following mass fraction：Vinyl chloride-vinyl acetate resin 6%, solvent dye 8%, dioctyl phthalate 2%, adhesion promoter 1%, diethyl hexyloxy propylamine 1%, paraffin 0.5%, balance of butanone and butyl acetate.
4. the High-performance ink coating for ink jet numbering machine according to any one of claim 1 ~ 3, it is characterised in that：The vinyl chloride-vinyl acetate resin includes polymer V1 and polymer V2, polymer V1 is obtained by the vinyl chloride and mass fraction that mass fraction is 96% for 4% vinyl acetate copolymerization, and polymer V2 is obtained by the vinyl chloride and mass fraction that mass fraction is 85% for 15% vinyl acetate copolymerization.
5. the High-performance ink coating for ink jet numbering machine according to claim 4, it is characterised in that：The mass ratio of the polymer V1 and polymer V2 is 1:2.
6. environmentally friendly code-spraying printing ink according to claim 5, it is characterised in that：The adhesion promoter is Silquest A-1100 or Silquest A-187.
7. environmentally friendly code-spraying printing ink according to claim 5, it is characterised in that：The solvent dye is SLB-34.
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| CN201510766350.3A CN106675197A (en) | 2015-11-11 | 2015-11-11 | High-performance printing ink coating for ink-jet printing machine |
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| CN201510766350.3A CN106675197A (en) | 2015-11-11 | 2015-11-11 | High-performance printing ink coating for ink-jet printing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117511296A (en) * | 2023-11-29 | 2024-02-06 | 广州瑞润科技有限公司 | Ink jet printer permeation ink and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117511296A (en) * | 2023-11-29 | 2024-02-06 | 广州瑞润科技有限公司 | Ink jet printer permeation ink and preparation method thereof |
| CN117511296B (en) * | 2023-11-29 | 2024-04-09 | 广州瑞润科技有限公司 | Ink jet printer permeation ink and preparation method thereof |
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Application publication date: 20170517 |