CN106675187A - Printing ink with low viscosity - Google Patents
Printing ink with low viscosity Download PDFInfo
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- CN106675187A CN106675187A CN201510766443.6A CN201510766443A CN106675187A CN 106675187 A CN106675187 A CN 106675187A CN 201510766443 A CN201510766443 A CN 201510766443A CN 106675187 A CN106675187 A CN 106675187A
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- vinyl acetate
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Abstract
The invention discloses printing ink with low viscosity. The printing ink is prepared from raw materials in percentage by mass as follows: 5%-8% of vinisol, 65%-76% of butanone, 8%-15% of butyl acetate, 1%-2% of dioctyl phthalate, 0.5%-1% of an adhesion promoter, 5%-10% of solvent dye and 0.2%-2% of paraffin. The vinyl chloride-vinyl acetate resin is taken as the resin, in the molecular structure of the vinyl chloride-vinyl acetate resin, nonpolar molecule vinyl acetate is embedded into vinyl chloride chains, so that the original molecular polarity is reduced, and the capacity of the resin for resisting dissolution of a polar solvent is enhanced; butanone and butyl acetate are selected as a mixed solvent, can be mutually dissolved and form certain ion pairs, repulsion between polymer chains can be improved, polymers in the ink can be better dispersed, a uniform and dense ink film can be formed after the solvent is evaporated and dried, and the alcohol resistance of the ink can be improved.
Description
Technical field
The present invention relates to technical field of ink, more particularly, to low viscous printing-ink.
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 with low viscous printing-ink, 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：
With low viscous printing-ink, 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%, solvent dye 5 ~ 10%, 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 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%, 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.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
With low viscous printing-ink, 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%, solvent dye 5 ~ 10%, 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 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：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%, 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.
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. there is low viscous printing-ink, 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%, solvent dye 5 ~ 10%, paraffin
0.2~2%。
2. according to claim 1 with low viscous printing-ink, it is characterised in that：The butanone is 5 ~ 6 with the mass ratio of the butyl acetate:1.
3. according to claim 2 with low viscous printing-ink, 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%, paraffin 0.5%, balance of butanone and butyl acetate.
4. according to any one in claim 1 ~ 3 with low viscous printing-ink, 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. according to claim 4 with low viscous printing-ink, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766443.6A CN106675187A (en) | 2015-11-11 | 2015-11-11 | Printing ink with low viscosity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766443.6A CN106675187A (en) | 2015-11-11 | 2015-11-11 | Printing ink with low viscosity |
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| CN106675187A true CN106675187A (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510766443.6A Pending CN106675187A (en) | 2015-11-11 | 2015-11-11 | Printing ink with low viscosity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864816A (en) * | 2018-08-01 | 2018-11-23 | 张家港市东威新材料技术开发有限公司 | A kind of environment-friendlyink ink and preparation method thereof |
| CN115923291A (en) * | 2022-12-20 | 2023-04-07 | 佛山市彩龙镀膜包装材料有限公司 | Alcohol-resistant BOPP aluminized film and preparation method thereof |
-
2015
- 2015-11-11 CN CN201510766443.6A patent/CN106675187A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864816A (en) * | 2018-08-01 | 2018-11-23 | 张家港市东威新材料技术开发有限公司 | A kind of environment-friendlyink ink and preparation method thereof |
| CN115923291A (en) * | 2022-12-20 | 2023-04-07 | 佛山市彩龙镀膜包装材料有限公司 | Alcohol-resistant BOPP aluminized film and preparation method thereof |
| CN115923291B (en) * | 2022-12-20 | 2023-09-15 | 佛山市彩龙镀膜包装材料有限公司 | Alcohol-resistant BOPP aluminized film and preparation method thereof |
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Application publication date: 20170517 |