CN101880492B - Titanium dioxide pigment for ink and preparation method thereof - Google Patents
Titanium dioxide pigment for ink and preparation method thereof Download PDFInfo
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- CN101880492B CN101880492B CN 201010231162 CN201010231162A CN101880492B CN 101880492 B CN101880492 B CN 101880492B CN 201010231162 CN201010231162 CN 201010231162 CN 201010231162 A CN201010231162 A CN 201010231162A CN 101880492 B CN101880492 B CN 101880492B
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Abstract
The invention relates to a titanium dioxide pigment for ink and a preparation method thereof. The titanium dioxide pigment for the ink is prepared by coating a coated material on surfaces of titanium dioxide particles and is characterized in that the coated material is an aluminum oxide which accounts for 1.0 to 4.0 percent of the weight of the titanium dioxide particles in weight percentage. The preparation method of the titanium dioxide pigment for the ink comprises the following steps of: (1) beating the titanium dioxide particles to prepare titanium dioxide water suspension; (2) adding a dispersing agent into the water suspension for dispersion, regulating the pH value and grinding; (3) diluting and heating the solution; (4) adding an aluminium compound into the solution; (5) regulating the pH value and curing to form an aluminum oxide coated layer on the surfaces of the titanium dioxide particles; and (6) filtering, washing, drying and superfinely grinding the obtained product. The titanium dioxide pigment prepared by the method has high glossiness and dispersibility when applied to the ink or like products. The preparation method can be used for treating the titanium dioxide pigment prepared in any way.
Description
Technical field
The invention belongs to chemical material technical field, relate to a kind of titanium white powder pigment, specifically is a kind of titanium dioxide pigment for ink and preparation method thereof.
Background technology
White titanium pigment be a kind of be the very excellent white pigment of performance, it is widely used in industries such as coating, plastic cement, plastics, papermaking, printing-ink, chemical fibre, rubber, makeup, pottery.For different application industries, white titanium pigment generally all need pass through the processing of mineral compound, to improve it such as application performances such as weathering resistance, whiteness, reducing power and opacifying powers.
The titanium white powder pigment that is used for printing ink or similar system is except that should having excellent pigment performance, and perfect performance is to have high oiliness system glossiness and good oiliness system dispersiveness.In order to improve glossiness and the dispersiveness that is applied in the oiliness system; Common way is the titanium white powder pigment particle to be carried out coating with one or more hydrous oxides handle, and particularly uses the oxide compound of aluminium to use glossiness and dispersiveness to improve its oiliness system.In the prior art, the method for using various hydrous oxides that titanium white powder pigment is handled has a lot, but generally speaking, and these methods are in order to produce the white titanium pigment of high gloss, often needs long treatment time, higher temperature and than complex apparatus.
Summary of the invention
This object of the invention is to overcome the deficiency that exists in the prior art, and a kind of titanium white powder pigment that in the application of printing ink or similar system, has high glossiness and good dispersiveness and preparation method thereof is provided.
According to technical scheme provided by the invention: a kind of titanium dioxide pigment for ink; Be coated with coated fertilizer on white titanium pigment particulate surface; It is characterized in that: said coated fertilizer is an al oxide, percentage ratio meter by weight, and the content of said al oxide is white titanium pigment particulate 1.0~4.0%.
A kind of working method of titanium dioxide pigment for ink is characterized in that comprising the steps:
(1) the white titanium pigment particle is joined in the deionized water, be mixed with the white titanium pigment aqeous suspension through stirring, the concentration of white titanium pigment aqeous suspension is 500~700g/L;
(2) in the above-mentioned white titanium pigment aqeous suspension for preparing, add dispersion agent and disperseed 25~35 minutes, percentage ratio meter by weight, said dispersant dosage is a white titanium pigment particulate 0.05%~1%; Adopt the pH regulator agent that the pH value of white titanium pigment aqeous suspension is adjusted to 8~11 then, again the white titanium pigment aqeous suspension is carried out milled processed, lapping mode can adopt ball milling or sand milling, preferably adopts sand milling;
(3) the white titanium pigment aqeous suspension that adopts deionized water will pass through milled processed is diluted to 250g/L~350g/L, is heated to 50 ℃~80 ℃ TR then and keeps;
(4) add a certain amount of alkaline aluminum compound aqueous solution and abundant the dispersion in the white titanium pigment aqeous suspension after heating earlier, slaking is 0.5~1 hour under whipped state, is beneficial to the abundant deposition of oxide compound; Then in 0.5~1.5 hour, add a certain amount of acidic aluminum compound water solution again and fully disperse to above-mentioned white titanium pigment aqeous suspension, slaking 1~2 hour under whipped state then is beneficial to the abundant deposition of oxide compound; The calculating principle that aluminium element in said alkalescence and the acidic aluminum compound water solution adds total amount is: percentage ratio meter by weight, and the weight that whole aluminium elements of adding generate aluminum oxide is the white titanium pigment particulate 1~4% in the white titanium pigment aqeous suspension; Wherein, the ratio of the aluminium element add-on in the aluminium element add-on in the alkaline aluminum compound aqueous solution and the acidic aluminum compound water solution is 1: 1~1: 3;
(5) keep TR in the step (3); The pH value of using the pH regulator agent will add the white titanium pigment aqeous suspension of aluminium element is adjusted between 6.5~7.5; Slaking is 0.5~1 hour under whipped state; Be beneficial to the abundant deposition of oxide compound, make the white titanium pigment particle surface form one deck alumina-coated layer;
(6) adopt at last currently known methods to the titanium white powder pigment aqeous suspension filter, wash, dry, micronizing and organic process, to strengthen the dispersiveness of said titanium white powder pigment in application system, obtain final titanium white powder pigment particle; Above-mentioned organic process can adopt wet method to carry out, and also can when micronizing, add organic agent and handle, and organic agent can adopt conventional trimethylolethane, TriMethylolPropane(TMP) and various siloxanes.
As further improvement of the present invention, in the step (1) of titanium white powder pigment working method, the concentration of white titanium pigment aqeous suspension is 550~650g/L.
As further improvement of the present invention, in the step (2) of titanium white powder pigment working method, the dispersion agent of adding is a phosphoric acid salt, and preferably, said phosphoric acid salt preferably adopts Sodium hexametaphosphate 99; The consumption of dispersion agent is a white titanium pigment particulate 0.1%~0.5%, and the pH value of white titanium pigment aqeous suspension is adjusted to 9.5~10.5.
As further improvement of the present invention, in the step (3) of titanium white powder pigment working method, the white titanium pigment aqeous suspension of process milled processed is diluted to 320g/L~330g/L, most 75 ℃ of the white titanium pigment aqeous suspension heating after the dilution.
As further improvement of the present invention; In the step (4) of titanium white powder pigment working method; The calculating principle that aluminium element in said alkalescence and the acidic aluminum compound water solution adds total amount is: percentage ratio meter by weight, the weight that whole aluminium elements of adding generate aluminum oxide is the white titanium pigment particulate 1.5~3% in the white titanium pigment aqeous suspension.
As further improvement of the present invention, in the step (4) of titanium white powder pigment working method, the ratio of the aluminium element add-on in the aluminium element add-on in the alkaline aluminum compound aqueous solution and the acidic aluminum compound water solution is 2: 3.
As further improvement of the present invention, in the step (4) of titanium white powder pigment working method, said alkaline aluminum compound is inclined to one side VAL-DROP, and said acidic aluminum compound is a Tai-Ace S 150.
As further improvement of the present invention, in the step (2) and (5) of titanium white powder pigment working method, the pH regulator agent of using is aqueous sodium hydroxide solution or dilute sulfuric acid aqueous solution.
The present invention compared with prior art, advantage is: the titanium white powder pigment that makes has high glossiness and good dispersiveness in the application of printing ink or similar system.The preparation method can be used for handling the titanium white powder pigment that makes in any form, the anatase titanium dioxide pigment that is for example made by sulfuric acid process, the rutile titanium dioxide pigment that is made by sulfuric acid process or chlorination technology.Each step of preparation method may be carried out batchwise also and can carry out continuously.
Embodiment
Below in conjunction with specific embodiment the present invention is described further.
Embodiment 1:
(1) take by weighing white titanium pigment particle 300g, the white titanium pigment particle is joined in the deionized water, it is 600g/L white titanium pigment aqeous suspension that making beating is mixed with concentration;
(2) in the above-mentioned white titanium pigment aqeous suspension for preparing, add sodium hexametaphosphate dispersant and disperseed 30 minutes, percentage ratio meter by weight, the consumption of Sodium hexametaphosphate 99 is a white titanium pigment particulate 0.3%; Adopt aqueous sodium hydroxide solution that the pH value of white titanium pigment aqeous suspension is adjusted to 9.8 then, again with sand mill to white titanium pigment aqeous suspension milled processed 30 minutes, remove sand;
(3) the white titanium pigment aqeous suspension that adopts deionized water will pass through milled processed is diluted to 300g/L, is heated to 75 ℃ TR then and keeps;
(4) add the sodium metaaluminate aqueous solution and abundant the dispersion in the white titanium pigment aqeous suspension after heating earlier, slaking is 0.5 hour under whipped state, is beneficial to the abundant deposition of oxide compound; Add aluminum sulfate aqueous solution again and fully disperse to above-mentioned white titanium pigment aqeous suspension then, slaking 1 hour under whipped state then is beneficial to the abundant deposition of oxide compound; Said sodium metaaluminate add-on is 3.86g, and promptly the weight of the whole aluminium elements generation aluminum oxide in the sodium metaaluminate is 2.4g; Said Tai-Ace S 150 add-on is 4g, and promptly the weight of the whole aluminium elements generation aluminum oxide in the Tai-Ace S 150 is 1.2g;
(5) keep TR in the step (3); The pH value of using dilute sulfuric acid aqueous solution will add the white titanium pigment aqeous suspension of aluminium element is adjusted between 7.0; Slaking is 0.5 hour under whipped state, is beneficial to the abundant deposition of oxide compound, makes the white titanium pigment particle surface form one deck alumina-coated layer;
(6) adopt at last currently known methods to the titanium white powder pigment aqeous suspension filter, wash, dry, micronizing, obtain final titanium white powder pigment particle.
Embodiment 2:
(1) take by weighing white titanium pigment particle 300g, the white titanium pigment particle is joined in the deionized water, it is 600g/L white titanium pigment aqeous suspension that making beating is mixed with concentration;
(2) in the above-mentioned white titanium pigment aqeous suspension for preparing, add sodium hexametaphosphate dispersant and disperseed 30 minutes, percentage ratio meter by weight, the consumption of Sodium hexametaphosphate 99 is a white titanium pigment particulate 0.3%; Adopt aqueous sodium hydroxide solution that the pH value of white titanium pigment aqeous suspension is adjusted to 9.8 then, again with sand mill to white titanium pigment aqeous suspension milled processed 30 minutes, remove sand;
(3) the white titanium pigment aqeous suspension that adopts deionized water will pass through milled processed is diluted to 300g/L, is heated to 75 ℃ TR then and keeps;
(4) add the sodium metaaluminate aqueous solution and abundant the dispersion in the white titanium pigment aqeous suspension after heating earlier, slaking is 0.5 hour under whipped state, is beneficial to the abundant deposition of oxide compound; Add aluminum sulfate aqueous solution again and fully disperse to above-mentioned white titanium pigment aqeous suspension then, slaking 1 hour under whipped state then is beneficial to the abundant deposition of oxide compound; Said sodium metaaluminate add-on is 8.7g, and promptly the weight of the whole aluminium elements generation aluminum oxide in the sodium metaaluminate is 5.4g; Said Tai-Ace S 150 add-on is 12g, and promptly the weight of the whole aluminium elements generation aluminum oxide in the Tai-Ace S 150 is 3.6g;
(5) keep TR in the step (3); The pH value of using dilute sulfuric acid aqueous solution will add the white titanium pigment aqeous suspension of aluminium element is adjusted between 7.0; Slaking is 0.5 hour under whipped state, is beneficial to the abundant deposition of oxide compound, makes the white titanium pigment particle surface form one deck alumina-coated layer;
(6) adopt at last currently known methods to the titanium white powder pigment aqeous suspension filter, wash, dry, micronizing and organic process, to strengthen the dispersiveness of said titanium white powder pigment in application system, obtain final titanium white powder pigment particle; Above-mentioned organic process is when micronizing, to add TriMethylolPropane(TMP) to handle, percentage ratio meter by weight, and the add-on of said TriMethylolPropane(TMP) is a white titanium pigment particulate 0.3~0.3%.
Embodiment 3:
Step among the embodiment 3 (1) to step (5) and embodiment 1 are identical, only in step (6) to the titanium white powder pigment aqeous suspension filter, wash, dry, micronizing and organic process, obtain final titanium white powder pigment particle; Above-mentioned organic process is when micronizing, to add TriMethylolPropane(TMP) to handle, percentage ratio meter by weight, and the add-on of said TriMethylolPropane(TMP) is a white titanium pigment particulate 0.3~0.3%.
The titanium white powder pigment of embodiment 1~3 preparation and commercially available pigment are compared, and wherein, reduced pigment 1 is for adopting the pigment of the dual coating of sial, and reduced pigment 2 is for adopting the pigment of the dual coating of zirconium aluminium, and reduced pigment 3 is the pigment without coating.
Comparing result is following:
Embodiment 1 | Embodiment 2 | Embodiment 3 | Contrast 1 | Contrast 2 | Contrast 3 | |
Glossiness | 66.2 | 77.8 | 85.6 | 76.6 | 73.4 | 56.1 |
Oil-dispersing property | 3.5 | 5.25 | 5.5 | 5 | 5 | 3.8 |
Visible by comparing result: the titanium white powder pigment of the present invention's preparation has the dispersed and high oiliness system glossiness of good oiliness system.
The foregoing description only is in order to understand the present invention better, and the present invention is not limited in the content in the foregoing description, and the simple modification that those skilled in the art make in the open scope of the present invention still is included in claims and limits in the protection domain.
Claims (8)
1. the working method of a titanium dioxide pigment for ink is characterized in that comprising the steps:
(1) the white titanium pigment particle is joined in the deionized water, be mixed with the white titanium pigment aqeous suspension through stirring, the concentration of white titanium pigment aqeous suspension is 500~700g/L;
(2) in the above-mentioned white titanium pigment aqeous suspension for preparing, add dispersion agent and disperseed 25~35 minutes, percentage ratio meter by weight, said dispersant dosage is a white titanium pigment particulate 0.05%~1%; Adopt the pH regulator agent that the pH value of white titanium pigment aqeous suspension is adjusted to 8~11 then, again the white titanium pigment aqeous suspension is carried out milled processed;
(3) the white titanium pigment aqeous suspension that adopts deionized water will pass through milled processed is diluted to 250g/L~350g/L, is heated to 50 ℃~80 ℃ TR then and keeps;
(4) add a certain amount of alkaline aluminum compound aqueous solution and abundant the dispersion in the white titanium pigment aqeous suspension after heating earlier, slaking is 0.5~1 hour under whipped state; Then in 0.5~1.5 hour, add a certain amount of acidic aluminum compound water solution again and fully disperse to above-mentioned white titanium pigment aqeous suspension, slaking 1~2 hour under whipped state then; The calculating principle that aluminium element in said alkalescence and the acidic aluminum compound water solution adds total amount is: percentage ratio meter by weight, and the weight that whole aluminium elements of adding generate aluminum oxide is the white titanium pigment particulate 1~4% in the white titanium pigment aqeous suspension; Wherein, the ratio of the aluminium element add-on in the aluminium element add-on in the alkaline aluminum compound aqueous solution and the acidic aluminum compound water solution is 1: 1~1: 3;
(5) keep TR in the step (3), the pH value of using the pH regulator agent will add the white titanium pigment aqeous suspension of aluminium element is adjusted between 6.5~7.5, and slaking is 0.5~1 hour under whipped state, makes white titanium pigment particle surface formation one deck alumina-coated layer;
(6) at last to the titanium white powder pigment aqeous suspension filter, wash, dry, micronizing and organic process, obtain final titanium white powder pigment particle;
In step (4), said alkaline aluminum compound is a sodium metaaluminate, and said acidic aluminum compound is a Tai-Ace S 150.
2. the working method of titanium dioxide pigment for ink as claimed in claim 1, it is characterized in that: in step (1), the concentration of white titanium pigment aqeous suspension is 550~650g/L.
3. the working method of titanium dioxide pigment for ink as claimed in claim 1, it is characterized in that: in step (2), the dispersion agent of adding is a phosphoric acid salt; The consumption of dispersion agent is a white titanium pigment particulate 0.1%~0.5%, and the pH value of white titanium pigment aqeous suspension is adjusted to 9.5~10.5.
4. the working method of titanium dioxide pigment for ink as claimed in claim 1 is characterized in that: in step (3), be diluted to 320g/L~330g/L, most 75 ℃ of the white titanium pigment aqeous suspension heating after the dilution through the white titanium pigment aqeous suspension of milled processed.
5. the working method of titanium dioxide pigment for ink as claimed in claim 1; It is characterized in that: in step (4); The calculating principle that aluminium element in said alkalescence and the acidic aluminum compound water solution adds total amount is: percentage ratio meter by weight, the weight that whole aluminium elements of adding generate aluminum oxide is the white titanium pigment particulate 1.5~3% in the white titanium pigment aqeous suspension.
6. the working method of titanium dioxide pigment for ink as claimed in claim 1 is characterized in that: in step (4), the ratio of the aluminium element add-on in the aluminium element add-on in the alkaline aluminum compound aqueous solution and the acidic aluminum compound water solution is 2: 3.
7. the working method of titanium dioxide pigment for ink as claimed in claim 1, it is characterized in that: in step (2) and (5), the pH regulator agent of using is aqueous sodium hydroxide solution or dilute sulfuric acid aqueous solution.
8. the working method of titanium dioxide pigment for ink as claimed in claim 3, it is characterized in that: said phosphoric acid salt preferably adopts Sodium hexametaphosphate 99.
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JP2000345090A (en) * | 1998-06-30 | 2000-12-12 | Pentel Corp | Aqueous pigment ink |
CN100547037C (en) * | 2007-11-13 | 2009-10-07 | 攀枝花学院 | A kind of composite envelope titanium white powder and preparation method thereof |
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Effective date of registration: 20190930 Address after: 243000 Anhui city of Ma'anshan province at Xinhua Economic Development Zone, Road No. 1 Patentee after: Anhui Venus Titanium White (Group) Co., Ltd. Address before: 214194 Beizhen Jing Zhang Jing Industrial Zone, Xishan District, Jiangsu, Wuxi Patentee before: Wuxi Haopu Titanium Co., Ltd. |