CN100383339C - Paper-making colorant and preparation method thereof - Google Patents
Paper-making colorant and preparation method thereof Download PDFInfo
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- CN100383339C CN100383339C CNB2004100184478A CN200410018447A CN100383339C CN 100383339 C CN100383339 C CN 100383339C CN B2004100184478 A CNB2004100184478 A CN B2004100184478A CN 200410018447 A CN200410018447 A CN 200410018447A CN 100383339 C CN100383339 C CN 100383339C
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Abstract
The present invention discloses a paper making colorant which solves the technical problems of the nonuniform color matching, the low oxidation resistance and the easy yellowing of paper through the color matching of common colorants and has the advantage of favorable effect. The present invention also discloses a preparation method for the paper making colorant. The paper making colorant is prepared from a violet compound of a colorant RVL having a structural formula (1) and a blue compound of a colorant 2B having a structural formula (2), wherein the blue compound of the colorant 2B accounts for 11.80 wt % to 20.40 wt % of the total colorant. The preparation method of the present invention is used for preparing two colorant compounds, namely that water, dispersing agents, antisettle agents, agents for preventing dissociation, etc. are added to solid pigments and then uniformly stirred and mixed to obtain solid-liquid mixing materials which are continuously ground until a grain diameter is completely controlled below 1 mu m so as to obtain the compounds, and the two compounds are prepared to a proper proportion. The present invention can be used in the paper making industry to produce paper having the favorable performance of high whiteness, uniform staining and oxidation resistance.
Description
Technical field
The present invention relates to a kind of colouring agent, particularly a kind of colouring agent that is used for paper-making process allotment paper form and aspect.The invention still further relates to a kind of preparation method of colouring agent, specifically, the present invention relates to a kind of preparation method of papermaking colouring agent.
Background technology
Colouring agent is widely used in fields such as papermaking, coating, particularly at paper industry, it requires to improve constantly to paper form and aspect in magma, deinking slurry, cultural paper, newsprint, coating papermaking, the paper production process, and especially printing paper and coated printing paper form and aspect whiteness, outward appearance, vision are had relatively high expectations.The same with the cultural paper kind of non-coating, the coated paper processing of generally mixing colours, the coated paper of not mixing colours almost be can't see.Except few coloured coated paper, the purpose of toning is in order to adjust to white to coated paper, and the purpose of adjusting to white is in order to obtain better visual effect.Usually contain china clay in the coating, make more whitening of coated paper by the yellow hue that adds dyestuff counteracting china clay, to improve visual whiteness.Whiteness is the psychophysical quantity of a complexity, and the whiteness of any tone is whiter actually, also depends on factors such as observer's culture background and affiliated ethnic group.Certainly, the toning in the actual production also depends in part on people's wish.
Coating mill is mixed colours in actual production and is perplexed such as problems such as painted not even aberration are big often, also therefore is subjected to user's complaint and complaint sometimes.Solve this type of problem, except strict control process process, also must carefully select the dye species that suits.
The dyestuff that is generally used for the paper toning has ACID DYES, basic-dyeable fibre, direct dyes, and these dyestuffs that are used for paper are with water miscible in the majority.Use water-soluble dye in the toning process, Yin Qiyi enters body paper or moves to coating surface when the drying with water, and each component of dyestuff has different compatibilities, and regular meeting causes change in color or painted irregular.This moment is a large amount of input brightening agents when paper production just, so that the paper whitening, but the paper oxidative resistance is not high behind a large amount of brightening agent that adds, and this will cause the paper flavescence.Papermaking enterprise is usually bought the import colouring agent, and effect is better but cost is too high, so present paper industry demand is fit to the novel colouring agent of its requirement, to solve intrinsic technical problem in the prior art.
Summary of the invention
Have when the invention solves in the above-mentioned prior art paper through common colouring agent toning that aberration, toning are irregular, paper oxidative resistance technical problem such as high easy jaundice not, a kind of papermaking colouring agent of effect excellence is provided, and the present invention also provides the preparation method of above-mentioned papermaking colouring agent.
Colouring agent of the present invention can be allocated the demand form and aspect as required, improve visual whiteness and paper surface oxidation resistance, record between the whiteness 92-96 between the light wave 400-420mm, need the colouring agent light wave between 410-425mm, to be the best like this, it is the intrinsic way of raw material that the off the beaten track paper industry of the present invention is selected dyestuff for use, and selects the main raw material of organic pigment as the papermaking colouring agent for use according to Application Areas.
For solving technical problem of the prior art, the technical scheme of papermaking colouring agent of the present invention is:
A kind of papermaking colouring agent, include purple composition of toner RVL and the blue composition of toner 2B, the allotment ratio of purple composition of toner RVL and the blue composition of toner 2B is: the percentage by weight that the blue composition of toner 2B accounts for purple composition of toner RVL and the blue composition total weight of toner 2B is 11.80%-20.40%.
Wherein: the structural formula of toner RVL purple is:
(I)
The structural formula of toner 2B orchid is:
Among the present invention, the percentage by weight that the blue composition of described toner 2B accounts for purple composition of toner RVL and the blue composition total weight of toner 2B is 14.99%-18.40%, best results.
R is English red (redness) abbreviation in the RVL purple, and V is the abbreviation of English violet (purple), and L is the abbreviation of English lightfastness (fastness to light).
The 2B of 2B orchid represents the inclined to one side phase degree of form and aspect, is Lan Sezhong.
The purple composition of above-mentioned toner RVL contains the water that percentage by weight is 30%-60%, the toner RVL purple of 26%-40%, the dispersant of 0.1%-10%, the anti-free agent of the sagging inhibitor of 6%-40% and 0.5%-2%.
The blue composition of above-mentioned toner 2B contains the water that percentage by weight is 15%-50%, the organic pigment of 20%-35%, the dispersant of 0.1%-10%, the anti-free agent of the sagging inhibitor of 6%-40% and 0.5%-2%.
Sagging inhibitor is a fatty alcohol-polyoxyethylene ether silane in the preferred version of the present invention, the Disperbyk-190 dispersant that dispersant preferably uses German company to produce, the anti-free preferred triethanolamine of agent.
Papermaking colouring agent of the present invention can be allocated arbitrarily according to the different demands of papermaking producer dialogue paper tone, to reach paper is mixed colours and group white requirement.Colouring agent is selected to high whiteness paper toning, both can be applicable to toning in the slurry, and also can use toning in coating, two kinds of usings method all have the good white effect of dialling, can be deployed into various form and aspect paper, make paper more can be adapted to various printing forms and also can improve printing effect.
Another one technical scheme of the present invention is the preparation method of papermaking colouring agent, specifically comprises the steps:
(1) the purple composition of preparation toner RVL:
(a) preliminary treatment: the solid pigment of getting 100KG toner RVL purple is put into container, the water that adds equivalent, add anti-free agent adjusting pH value in the even back of container for stirring, obtain pH value and be the solution between the 7.0-7.5, filtration is also carried out the vacuum dehumidifier with filtering water and inorganic salts, obtains pure solid pigment RVL purple;
(b) preparation solidliquid mixture material: get the water that above-mentioned pure solid pigment is pressed column weight amount percentage preparation mixed solution: 30%-60%, the pure solid pigment RVL purple of 26%-40%, the dispersant of 0.1%-10%, the anti-free agent of the sagging inhibitor of 6%-40% and 0.5%-2% stirs;
(c) the control temperature is constantly ground above-mentioned solidliquid mixture material and is controlled at below the 1 μ m until material particular diameter 100% under the constant condition of room temperature.
(2) directly get solid toner 2B orchid and be equipped with the blue composition of toner 2B in following ratio:
(a) adding percentage by weight in container is the water of 15%-50%, the toner 2B orchid of 20%-35%, the dispersant of 0.1%-10%, the anti-free agent of the sagging inhibitor of 6%-40% and 0.5%-2%, in container, constantly stir make the surface of toner 2B orchid fully moistening, emulsification, dispersion, obtain homogeneous mixture of material.
(b) the control temperature is constantly ground the said mixture material and is controlled at below the 1 μ m until material particular diameter 100% under the constant condition of room temperature.
(3) get the blue composition of toner 2B that obtains in purple composition of the toner RVL that obtains in the step (1) and the step (2) and carry out mixing preparation papermaking colouring agent, wherein the blue composition of the purple composition of toner RVL/toner 2B is 3.9 by weight proportion: 1-7.5: 1, and promptly to account for the percentage by weight of purple composition of toner RVL and the blue composition total weight of toner 2B be 11.80%-20.40% to the blue composition of toner 2B.
Percentages all in this specification all are weight percentage.
Temperature preferably is controlled in below 30 ℃ among the preparation method of the present invention.
For making the colouring agent better effects if, the present invention prepares in the method for producing toner and toner also can add emulsifying agent, homogenizing agent, bleeding agent and antifreezing agent, and homogenizing agent can be selected fatty oxygen alcohol oxirane for use, and emulsifying agent is selected oxirane for use, bleeding agent can be selected DMF for use, is N, dinethylformamide.
Produce in the colouring agent process, at first control raw-material stability, the form and aspect of colored pigment control tinctorial yield in the raw material, control comprises impurity, content etc.Next is the heat that control abrasive product collision produces in the process of lapping, must control temperature and be in constantly, just can guarantee agent system stability, guarantees that viscosity Control is not destroyed within the specific limits.The active surface promoter effect is under the good mechanical working order, and finished product grain size is controlled, and coloured light is controlled, just guarantees the colouring agent monolithic stability.
Comprehensive technique scheme, beneficial effect of the present invention is as follows:
(1) papermaking colouring agent of the present invention has good affinity, and colouring agent is kept the rate height here, is not subjected to the influence of pH value in the use of the present invention.。
(2) the organic pigment heat resistance better function that adopts of the present invention is not changed by bake out temperature in actual applications and the paper tone is impacted.
(3) mix colours in coating, dialling contour painting can be good, and good with the coating compatibility, diffusivity is good during application, can prolong coated paper makes the paper brightness reversion through oxidation cycle.
(4) product property of the present invention is stable, effectively floccule can not occur in the storage time, and production cost reduces.
The specific embodiment:
Embodiment 1-7:
Contain inorganic salts and slaine in the commodity toner RVL purple, comprise phosphorus, molybdate in its structure, so its hydrophily is good.But it is made aqueous color paste and then swells, floccule appears then, by a large amount of experiments, find that this shortcoming can carry out pretreated method with it by the advantage of the purple good hydrophilic property of commodity toner RVL and solve, promptly in container, add the purple 100Kg of toner RVL earlier, add deionized water 100Kg again, in container, pull an oar and stirred 10 minutes, pigment is evenly mixed with water fully, regulate pH value between 7.2-7.5 with triethanolamine, use high-density non-woven fabrics vacuum dehumidifier then, water in the elimination pigment and inorganic salts.Measure staying filter cloth paint cake moisture, control solid moisture about 50% is so that next step feeds intake.
Add Disperbyk-190# dispersant, 3Kg castor oil oxirane emulsifying agent, 3Kg fatty alcohol oxirane homogenizing agent, 1.5KgN, N-formamide bleeding agent, the 9Kg ethylene glycol antifreeze that 0.6Kg Germany BYK company produces by proportioning in another container, the water that reaches 9Kg fatty alcohol-polyoxyethylene ether silane sagging inhibitor, 12Kg stirs and makes mixed liquor.
Get the moisture of giving money as a gift after the above-mentioned filtration and be 50% pigment cake 60Kg, add in the above-mentioned mixed liquor for preparing and stir, make dispersant fully be adsorbed on the granules of pigments surface, stop to stir the material that obtains mixing.
Use pipeline that the exit is arranged at the bottom that an electric diaphragm pump is connected two containers, the above-mentioned material that makes enters horizontal ball mill import department by a container by membrane pump and grinds dispersion, and material enters the another one container by the ball mill exit.According to this reiteration circulation, constantly enter in the ball mill and grind.Will note controlling the flow that enters ball mill in this process, the heat that is produced by pearl collision in the control ball mill avoids the ball mill temperature to rise, and rises and causes material to be swollen and system is destroyed thereby avoid influencing temperature of charge.
Through circular grinding continuously, material is from progressively refinement of initial particle diameter 100-150 μ m, the material surface brightness also progressively improves in the container, illustrate that material particular diameter diminishes, tinctorial yield improves along with the variation of particle diameter, last terminal point particle diameter 100% reaches below the 1 μ m, and it is the highest that tinctorial yield reaches, color and luster saturation degree the best.
The purple composition sampling of toner RVL that will reach terminal point and standard sample compare that to reach vision consistent, enter PC-2A pigment form and aspect color difference meter by 0.1% dilution proportion and measure, grain diameter all is controlled at below the 1 μ m, and median is 0.4-0.5 μ m, the ph value is 7.3, and viscosity is 20pms.
Structural formula is the 2B orchid possess hydrophilic property not of II, can omitting preprocessing process, directly to select percentage by weight for use by the component of ratio requirement be 35% 2B orchid (structural formula is II), the dispersant of higher proportion i.e. the Disperbyk-190# dispersant produced of 7.0% German BYK company, adds 7.0% castor oil oxirane emulsifying agent in addition again, 3.5% fatty alcohol oxirane homogenizing agent, 3.5% N, N-formamide bleeding agent, the anti-free agent of 1.2% triethanolamine, 7.0% ethylene glycol antifreeze and 14.0% fatty alcohol-polyoxyethylene ether silane sagging inhibitor, 21.8% water.Above-mentioned mixed liquor in container, pull an oar stir make that surface of pigments is moistening, emulsification, dispersion, make lipophile pigment change into hydrophily, entered behind the carrier abundant moistening high speed dispersion 1 hour, make it evenly to mix the material that obtains mixing with water fully.
Use pipeline that the exit is arranged at the bottom that an electric diaphragm pump is connected two containers, the above-mentioned material that makes is entered horizontal ball mill import department by a container by membrane pump grind dispersion, material enters the another one container by the ball mill exit.According to this reiteration circulation, constantly enter in the ball mill and grind.To note controlling the flow that enters ball mill in this process, connect circulating condensing water around the pipeline and take away the heat that produces by the pearl collision in the ball mill, avoid the ball mill temperature to rise, rise and cause material to be swollen and system is destroyed thereby avoid influencing temperature of charge.
Through circular grinding continuously, material is from progressively refinement of initial particle diameter 100-150 μ m, the material surface brightness also progressively improves in the container, illustrate that material particular diameter diminishes, tinctorial yield improves along with the variation of particle diameter, last terminal point particle diameter 100% reaches below the 1 μ m, and it is the highest that tinctorial yield reaches, color and luster saturation degree the best.The blue composition sampling of toner 2B that will reach terminal point and standard sample compare that to reach vision consistent, enter PC by 0.1% dilution proportion, and handling back 2B orchid method for producing toner and toner outward appearance is gorgeous blue look solution, and tinctorial yield is 100%.
Get blue composition of above-mentioned toner 2B and the purple composition of toner RVL, allocate papermaking colouring agent of the present invention.Papermaking colouring agent of the present invention is used to be coated with painted or the interior tone look of paper industry paper pulp, and when mixing colours in paper pulp, ratio according to the present invention adds toner in the slurry successively.
The embodiment 1 to embodiment 7 of concrete allotment ratio sees also table one, and serves as the test of mixing colours of contrast benchmark with import mixed colorant C, and import colouring agent C is that Switzerland's vapour clings to product violet N.
Fixedly the consumption of colouring agent C is that 200ppm is (with respect to unit over dry pigment, down together), adjust toner RVL purple and the proportioning of toner 2B orchid and their total consumption, carry out the test and the calculating of whiteness and color according to standard GB 7975 and CIE1982 whiteness formulas; The coated paper degradation is undertaken by GB/T464.1, and to investigate the heat-proof aging effect of organic pigment, colouring agent C also compares simultaneously.For guaranteeing accurate measurement and batching evenly, 100 times of uses of above-mentioned three kinds of toners dilution.
The above-mentioned coating that contains colouring agent is coated on 80g/m
2Body paper on, coating weight 20-21g/m
2, in 105 ℃ of dryings 1 minute.For avoiding introducing error, each pattern in only each being taken turns chromogenic indicator compare.In addition, the not modified processing of coated paper.
The key instrument that needs in the experiment is: YQ-Z-48A whiteness colour measurement instrument, and whiteness and color are measured in place of production China Hangzhou; The NDJ-5S viscosimeter, place of production Chinese Shanghai is measured viscosity; The GFJ-0.4 high speed dispersor, place of production Chinese Shanghai is used for batching; Hand-held expanding slot scraper is used for coating, place of production Japan.
Table one is the whiteness of colouring agent of embodiment of the invention 1-7 and the concrete data of every index, wherein L is a lightness index, R is brightness (being whiteness), W represents visual whiteness, T represents colour cast (on the occasion of the green partially degree of representative, negative value is represented red partially degree), a and b represent chromaticity index, a is on the occasion of the red partially degree of expression, represent green partially degree during negative value, b on the occasion of the time represent yellow partially degree, represent blue partially degree during negative value, Δ Hab and Δ Eab represent to contain hue difference and the aberration between the papermaking colouring agent of each embodiment among colouring agent C and the present invention respectively.
Can find out that from table one the total consumption of colouring agent of the present invention be that 180ppm can obtain than consumption is the close color of import colouring agent of 200ppm, and brightness and whiteness are better, tinting strength, tinting power is higher.
Table two be the heat aging property of papermaking colouring agent of embodiment of the invention 1-7 and import colouring agent heat aging property data relatively.The pattern of getting the pattern of the mixed colorant that contains colouring agent C and containing the papermaking colouring agent of embodiment 1-7 ratio hangs on respectively in the baking oven, 105 ℃ of following heat ageings 12 hours, measure aging before and after every colour index of pattern.The difference of index is listed in the table two before and after aging, increases on the occasion of the aging back of expression, and negative value represents that aging back reduces.
Table one
The heat-resistant aging of table two, colouring agent
| Index | Mixed colorant C | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| ΔL | 0.83 | 0.85 | 0.84 | 0.86 | 0.83 | 0.86 | 0.84 | 0.88 |
| Δa | -1.40 | -1.37 | -1.34 | -1.31 | -1.33 | -1.34 | -1.35 | -1.37 |
| Δb | 5.88 | 5.43 | 5.44 | 5.40 | 5.37 | 5.38 | 5.35 | 5.40 |
| ΔHab | 5.86 | 5.20 | 5.25 | 5.10 | 5.11 | 5.14 | 5.09 | 5.22 |
| ΔEab | 6.10 | 5.66 | 5.58 | 5.42 | 5.49 | 5.61 | 5.55 | 5.70 |
| ΔR | -5.21 | -4.83 | -4.76 | -4.70 | -4.74 | -4.66 | -4.68 | -4.89 |
| ΔW | -24.73 | -23.62 | -23.50 | -23.42 | -23.41 | -23.37 | -23.34 | -23.60 |
| ΔT | 0.02 | 0.10 | 0.08 | 0.11 | 0.10 | 0.16 | 0.16 | 0.16 |
From table two, can find out, the variation tendency unanimity of two based colorants, promptly L, b and T increase, and a, R and W reduce.From intensity of variation, a of colouring agent of the present invention, b, R and W all change less, and L is bigger, and only T changes greatly.On aberration Δ Eab and these two composite targets of hue difference Δ Hab, colouring agent of the present invention all changes less, Comprehensive analysis results, and heat-resistant aging of the present invention is better.
Claims (4)
1. papermaking colouring agent, include purple composition of toner RVL and the blue composition of toner 2B, it is characterized in that the allotment ratio of purple composition of toner RVL and the blue composition of toner 2B is: the percentage by weight that the blue composition of toner 2B accounts for purple composition of toner RVL and the blue composition total weight of toner 2B is 11.80%-20.40%; The purple composition of described toner RVL contains the water that percentage by weight is 30%-60%, the toner RVL purple of 26%-40%, the dispersant of 0.1%-10%, the anti-free agent of the fatty alcohol-polyoxyethylene ether silane sagging inhibitor of 6%-40% and the triethanolamine of 0.5%-2%; The blue composition of described toner 2B contains the water that percentage by weight is 15%-50%, the toner 2B orchid of 20%-35%, the dispersant of 0.1%-10%, the anti-free agent of the fatty alcohol-polyoxyethylene ether silane sagging inhibitor of 6%-40% and the triethanolamine of 0.5%-2%;
The structural formula of this toner RVL purple is: (I)
The structural formula of this toner 2B orchid is: (II)
2. papermaking colouring agent according to claim 1 is characterized in that the percentage by weight that described toner 2B orchid composition accounts for purple composition of toner RVL and the blue composition total weight of toner 2B is 14.99%-18.40%.
3. according to claim 1 or 2 described papermaking colouring agents, it is characterized in that described dispersant is the Disperbyk-190 dispersant that German BYK company produces.
4. the preparation method of a papermaking colouring agent is characterized in that the preparation method comprises the steps:
(1) the purple composition of preparation toner RVL:
(a) preliminary treatment: the solid pigment of getting 100KG toner RVL purple is put into container, the water that adds equivalent, add the anti-free agent adjusting pH value of triethanolamine in the even back of container for stirring, obtain pH value and be the solution between the 7.0-7.5, filtration is also carried out the vacuum dehumidifier with filtering water and inorganic salts, obtains pure solid pigment RVL purple;
(b) preparation solidliquid mixture material: get the water that above-mentioned pure solid pigment is pressed column weight amount percentage preparation mixed solution: 30%-60%, the pure solid pigment RVL purple of 26%-40%, the dispersant of 0.1%-10%, the anti-free agent of the fatty alcohol-polyoxyethylene ether silane sagging inhibitor of 6%-40% and the triethanolamine of 0.5%-2% stirs;
(c) the control temperature is constantly ground above-mentioned solidliquid mixture material and is controlled at below the 1 μ m until material particular diameter 100% under the constant condition of room temperature;
(2) directly get solid toner 2B orchid and be equipped with the blue composition of toner 2B in following ratio:
(a) adding percentage by weight in container is the water of 15%-50%, the toner 2B orchid of 20%-35%, the dispersant of 0.1%-10%, the anti-free agent of the fatty alcohol-polyoxyethylene ether silane sagging inhibitor of 6%-40% and the triethanolamine of 0.5%-2%, in container, constantly stir make the surface of toner 2B orchid fully moistening, emulsification, dispersion, obtain homogeneous mixture of material;
(b) the control temperature is constantly ground the said mixture material and is controlled at below the 1 μ m until material particular diameter 100% under the constant condition of room temperature;
(3) get the blue composition of toner 2B that obtains in purple composition of the toner RVL that obtains in the step (1) and the step (2) and carry out mixing preparation papermaking colouring agent, the percentage by weight that the blue composition of toner 2B accounts for purple composition of toner RVL and the blue composition total weight of toner 2B is 11.80%-20.40%.
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| CNB2004100184478A CN100383339C (en) | 2004-05-19 | 2004-05-19 | Paper-making colorant and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2554344B2 (en) * | 1987-10-09 | 1996-11-13 | 三菱製紙株式会社 | Lightweight coated paper |
| JP2588211B2 (en) * | 1987-09-21 | 1997-03-05 | 三菱製紙株式会社 | Neutral paper manufacturing method |
| CN1067736C (en) * | 1994-04-11 | 2001-06-27 | 北京造纸七厂 | Whitening agent and whitening method for making paper |
| US6432185B1 (en) * | 1999-03-16 | 2002-08-13 | Clariant Gmbh | Red acid dyes for injet printing and paper dyeing |
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2004
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2588211B2 (en) * | 1987-09-21 | 1997-03-05 | 三菱製紙株式会社 | Neutral paper manufacturing method |
| JP2554344B2 (en) * | 1987-10-09 | 1996-11-13 | 三菱製紙株式会社 | Lightweight coated paper |
| CN1067736C (en) * | 1994-04-11 | 2001-06-27 | 北京造纸七厂 | Whitening agent and whitening method for making paper |
| US6432185B1 (en) * | 1999-03-16 | 2002-08-13 | Clariant Gmbh | Red acid dyes for injet printing and paper dyeing |
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