CN101302372A - Method for improving moisture dispersibility of gravure composite printing ink - Google Patents
Method for improving moisture dispersibility of gravure composite printing ink Download PDFInfo
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- CN101302372A CN101302372A CN 200810052208 CN200810052208A CN101302372A CN 101302372 A CN101302372 A CN 101302372A CN 200810052208 CN200810052208 CN 200810052208 CN 200810052208 A CN200810052208 A CN 200810052208A CN 101302372 A CN101302372 A CN 101302372A
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- Inks, Pencil-Leads, Or Crayons (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The invention relates to a method for improving the moistening and dispersing performances of a gravure composite printing ink. The method is characterized by comprising the following implementation steps that: in the process of preparing the printing ink, a macromolecular weight polyurethane moistening and dispersing addition agent is added; a chemical structure of the additon agent is formed by adding a special pigment anchor group or a segmer on a polyurethane copolymer; the molecular weight is between 20000 and 50000 Mw; the addition agent is suitable for various printing ink resin systems and the moistening and dispersing needs of the pigment; the method for adding the addition agent comprises the following steps that: the addition agent can be directly added in the process of printing ink production; the total adding range is counted according to the addition agent solid/the pigment and filler solid portions of 2 to 40 portions/100 portions; or the addition agent is directly added in the printing process according to the need and the quality of printing ink without adding a diluter; the adding amount of the addition agent in the printing process accounts for 1 to 2 portions/100 portions of the printing ink; and the addition agent is evenly stirred and can be used. The method has simple process and obvious effect and effectively improves the product quality.
Description
Technical field
The present invention relates to a kind of method that improves ink performance, relate in particular to a kind of method that improves moisture dispersibility of gravure composite printing ink.
Background technology
At present, in the preparation process and typography of printing ink, the color emissivity of the pigment of printing ink production process, the flowability of printing ink, the stability that printing ink is deposited, the machine stability of printing process, the solvability again of printing ink all are to be directly connected to the important technology index whether this ink product adapts to requirements of the times, also are the important prerequisites of each printing ink manufacturing enterprise existence.
Traditional production principle is to add pigment production based on one or more relevant resin low-melting ink vehicle that composite print uses, auxiliary agent, solvents etc. of being used for, but there is following shortcoming in this traditional printing ink:
" dirty version " and " roller platen set-off " 1, take place in printing process easily.
2, gambling version phenomenon takes place easily.
3, the flowability of printing ink is poor, easily foaming.
4, printing ink because wettability is poor, often causes color emissivity, the poor mobile performance of pigment in process of production.
5, the machine stability of printing ink is poor, should not print for a long time.
Above drawback mainly is because the selection and the improper use of dispersion moisture agent cause.
Therefore, improving above-mentioned present situation as early as possible, provide a kind of raising printing ink wetting dispersion effect, reduce milling time, and save the method for the improvement moisture dispersibility of gravure composite printing ink of cost, is one of the current urgency of this field scientific research personnel difficult problem to be solved.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part, provide a kind of and effectively improve the quality of products, technology is simple, the method for obvious results improvement moisture dispersibility of gravure composite printing ink.
Implementation step of the present invention for achieving the above object is as follows:
In the printing ink preparation process, add the wetting dispersing auxiliary of a kind of high molecular weight polyurethanes, its chemical structure is that polyurethane copolymer adds special pigment anchoring group or segment, molecular weight is at 20000-50000Mw, and main effect is for helping wetting dispersion by reducing surface tension when grinding; The addition means of described auxiliary agent: in the production process of printing ink, earlier with the resin low-melting ink vehicle, pigment, solvent are even, add this auxiliary agent then, stir 15-20 minute through 9m/ rotating speed second, are ground to the fineness that GB is stipulated with sand China ink machine then; The overall interpolation scope of described auxiliary agent in the printing ink preparation process is by auxiliary agent solid/face, filler solid part: 2-40 part/100 part; Or, directly add according to the ink quality that does not add thinner as required in the printing process adding; The addition of described auxiliary agent in printing process is 1-2 part/100 part of printing ink, can use after stirring.
Described auxiliary agent is as follows at different face, amount of auxiliary that filler added in the printing ink preparation process:
Face, filler auxiliary agent solid/pigment solids (part/100 parts)
Titanium dioxide 2-3;
Common iron oxide pigment 3.5-4.5;
Chromic oxide pigment 2-3;
The blue or green class pigment of phthalein 20-25;
Azophloxine 20-30;
Diarylide yellow 15-20;
Dioxazine violet 20-30;
Regular grade carbon black 20;
High-carbon black pigment 30-40.
The invention has the beneficial effects as follows:
(1) can significantly improve pigment wetting effect in the printing ink production process, improve the color emissivity of pigment, obtain stable color effects.
(2) can effectively improve the flowing property of printing ink in the printing ink production process, reduce the milling time of printing ink, improve the production efficiency of printing ink.
(3) can significantly improve printing ink in printing process in solvability, stop the generation of printing ink mist version, gambling version phenomenon in printing process.
Adopt the wetting dispersing auxiliary of high molecular weight polyurethanes that pigment is had good wetting, dispersion, stability, and in printing process, add the machine stability to improve printing ink, solvability again, make printing ink have long-time printing and nondiscoloration, be difficult for taking place printing troubles such as mist version, gambling version, can obtain more stable printing.
In a word, technology of the present invention is simple, and effect is remarkable, makes printing ink in printing process, good fluidity, and foaming is few, and unsuitable conjunctiva effectively improves the quality of products in the ink fountain.
Embodiment
Below in conjunction with preferred embodiment, to details are as follows according to embodiment provided by the invention:
In the printing ink preparation process, add the wetting dispersing auxiliary of a kind of high molecular weight polyurethanes, its chemical structure is that polyurethane copolymer adds special pigment anchoring group or segment, molecular weight is at 20000-50000Mw, and main effect is for helping wetting dispersion by reducing surface tension when grinding; The addition means of described auxiliary agent: in the production process of printing ink, earlier with the resin low-melting ink vehicle, pigment, solvent are even, add this auxiliary agent then, stir 15-20 minute through 9m/ rotating speed second, are ground to the fineness that GB is stipulated with sand China ink machine then; The overall interpolation scope of described auxiliary agent in the printing ink preparation process is by auxiliary agent solid/face, filler solid part: 2-40 part/100 part; Or, directly add according to the ink quality that does not add thinner as required in the printing process adding; The addition of described auxiliary agent in printing process is 1-2 part/100 part of printing ink, can use after stirring.
Described auxiliary agent is as follows at different face, amount of auxiliary that filler added in the printing ink preparation process:
Face, filler auxiliary agent solid/pigment solids (part/100 parts)
Titanium dioxide 2-3;
Common iron oxide pigment 3.5-4.5;
Chromic oxide pigment 2-3;
The blue or green class pigment of phthalein 20-25;
Azophloxine 20-30;
Diarylide yellow 15-20;
Dioxazine violet 20-30;
Regular grade carbon black 20;
High-carbon black pigment 30-40.
Embodiment 1
Improvement high-performance intaglio plate composite packaging chilli oil China ink
10 parts of azophloxine pigment,
15 parts of resin liquid,
20 parts of solvents;
After above-mentioned ink raw materials high-speed stirring mixed, add 0.2 part/100 parts wetting dispersing auxiliaries of high molecular weight polyurethanes, stirred 20 minutes through 9m/ rotating speed second, be ground to GB with sand China ink machine and require needed fineness, routinely needed two material are added together then, after mixing, detect index of correlation, do certain adjustment and after-filtration, barrelling.The printing ink that adopts this method to prepare, flowing property is good, and color and luster is full.
Embodiment 2
The printing adaptability of improvement intaglio plate composite black printing ink
1 part/100 parts wetting dispersing auxiliaries of high molecular weight polyurethanes are joined in the polyurethanes black ink, stir, routinely towards rare to printing viscosity, last machine printing can reduce the probability that mist version, gambling version take place greatly.
Above-mentioned detailed description of the method for this improvement moisture dispersibility of gravure composite printing ink being carried out with reference to embodiment; be illustrative rather than determinate; can exemplify out several embodiment according to institute's limited range; therefore in the variation and the modification that do not break away under the general plotting of the present invention, should belong within protection scope of the present invention.
Claims (2)
1, a kind of method that improves moisture dispersibility of gravure composite printing ink is characterized in that implementation step is as follows:
Adding a kind of chemical structure in the printing ink preparation process is that polyurethane copolymer adds special pigment anchoring group or segmental molecular weight at the wetting dispersing auxiliary of the high molecular weight polyurethanes of 20000-50000Mw, and its main effect is for helping wetting dispersion by reducing surface tension when grinding; The addition means of described auxiliary agent: in the production process of printing ink, earlier with the resin low-melting ink vehicle, pigment, solvent are even, add this auxiliary agent then, stir 15-20 minute through 9m/ rotating speed second, are ground to the fineness that GB is stipulated with sand China ink machine then; The overall interpolation scope of described auxiliary agent in the printing ink preparation process is by auxiliary agent solid/face, filler solid part: 2-40 part/100 part; Or, directly add according to the ink quality that does not add thinner as required in the printing process adding; The addition of described auxiliary agent in printing process is 1-2 part/100 part of printing ink, can use after stirring.
2, the method for improvement moisture dispersibility of gravure composite printing ink according to claim 1 is characterized in that described auxiliary agent is as follows at different face, amount of auxiliary that filler added in the printing ink preparation process:
Face, filler auxiliary agent solid/pigment solids (part/100 parts)
Titanium dioxide 2-3;
Common iron oxide pigment 3.5-4.5;
Chromic oxide pigment 2-3;
The blue or green class pigment of phthalein 20-25;
Azophloxine 20-30;
Diarylide yellow 15-20;
Dioxazine violet 20-30;
Regular grade carbon black 20;
High-carbon black pigment 30-40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810052208 CN101302372A (en) | 2008-01-29 | 2008-01-29 | Method for improving moisture dispersibility of gravure composite printing ink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810052208 CN101302372A (en) | 2008-01-29 | 2008-01-29 | Method for improving moisture dispersibility of gravure composite printing ink |
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| Publication Number | Publication Date |
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| CN101302372A true CN101302372A (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200810052208 Pending CN101302372A (en) | 2008-01-29 | 2008-01-29 | Method for improving moisture dispersibility of gravure composite printing ink |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021837B (en) * | 2009-09-11 | 2012-10-10 | 上海华峰超纤材料股份有限公司 | Superfine fiber synthetic leather, preparation method thereof and printing material composition |
-
2008
- 2008-01-29 CN CN 200810052208 patent/CN101302372A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102021837B (en) * | 2009-09-11 | 2012-10-10 | 上海华峰超纤材料股份有限公司 | Superfine fiber synthetic leather, preparation method thereof and printing material composition |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081112 |