CN101538421B - Method for preparing coated pigment - Google Patents
Method for preparing coated pigment Download PDFInfo
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- CN101538421B CN101538421B CN2009101139839A CN200910113983A CN101538421B CN 101538421 B CN101538421 B CN 101538421B CN 2009101139839 A CN2009101139839 A CN 2009101139839A CN 200910113983 A CN200910113983 A CN 200910113983A CN 101538421 B CN101538421 B CN 101538421B
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- pigment
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Abstract
The invention discloses a method for preparing coated pigment, comprising refinement of a substrate carrier and the pigment; the method is characterized in that a dry-wet method is used for coating and comprises the following steps of firstly starting a high-speed mixer, subsequently pouring and keeping the substrate carrier in the mixer at the rotation speed of 400r/min for 5min, leading the powder to generate self-heat; after evaporating the water in the substrate, adding the additive with the amount of 1-5% times of the substrate amount in the mixer at the rotation speed of 400r/min for 5min; leading the additive to coat on the surface of the substrate uniformly and adjusting the rotation speed of the high-speed mixer to 900r/min; subsequently adding powdered pigment according to the weight ratio between the substrate and the pigment of 70-90:30-10, coating for 10 minutes and leading the temperature of the coated pigment to achieve about 110-150 DEG C, and quickly solidifying the adhesive in the additive. The method has the advantages of good coating direction determination, generating no error actions of cheap substrate carrier pigment, wasting no expensive pigment, uniformly dispersed pigment due to powdered agent, thin and firm coating due to additive, low oil-absorption rate and good sheltering force.
Description
Technical field
The present invention relates to coated pigment, particularly the preparation method of various coated pigments.
Background technology
Coated pigment is outside base vector, to coat auxiliary agent and additives of pigments; And the coated pigment that forms; Be widely used in the industries such as colored paint, printing ink, coating, plastics, pottery, rubber, at present the preparation method of coated pigment has two kinds of dry method and wet methods, and described dry method coating is that raw material coats under anhydrous situation; This preparing method's deficiency is: raw material dispersed bad, and the color additives consumption is big; To be raw material coat having under the situation of water described wet method coating, and the deficiency of this law is a complex process, and cost is high.South China Sea is climbed precious ZL92109268.7 patent and is disclosed the technology that a kind of dry method is produced white coated pigment; It is base vector and additives of pigments to be encased in simultaneously carry out coating in the Centrifugal vibration mill and handle, but this method coating process does not have orientation, possibly be pigment bag base-material; Also possibly be base-material bag pigment; This just makes that the utilization ratio of pigment is low, and production cost is high, and its hiding rare of acquisition coloured pigment, oil absorbency all do not reach requirement.
Summary of the invention
The objective of the invention is in order to overcome the deficiency of prior art, and disclose a kind of method that wet coating legal system is equipped with coated pigment of doing that adopts.
Preparing method of the present invention comprises the refinement of base vector and pigment, it is characterized in that: utilize and do the wet method coating, adopt dried wet method to carry out coating, its step is following:
1) starts impeller earlier, rotating speed is risen to 400 commentaries on classics/min, then base vector is dropped in the stirrer, kept rotating speed 5 minutes, make powder produce self-heating, evaporate a spot of moisture content in the base-material;
2) 1～5% of adding base-material amount dispersion agent and caking agent, 400 commentaries on classics/min running 5 minutes makes dispersion agent and caking agent even in the base-material surface coated;
3) again the impeller rotating speed is risen to 900 commentaries on classics/min; Wetting base-material the high speed of impeller throw get rid of and the centrifugation effect state under, add the pigment of dust formation, add-on is in base-material: the weight ratio of pigment=70～90: 30～10 ratio; Coating 10 minutes; Make the coated pigment temperature reach 110～150 ℃, caking agent solidifies very soon, promptly makes spherical coated pigment.
Described base vector is bleaching synthetic calcium silicate (nCaOmsiO
2), or natural mineral powder such as tiff, calcite, talcum, single crystal quartz stone.
Described pigment can be mineral dye, also can be pigment dyestuff, needs to take according to the color of desire system product, for example selects for use white titanium pigment, indigo plant, green phthalocyanine pigment, yellow, red sun-proof, fast light pigment can make the coated pigment of respective color.
Described dispersion agent is a silicon class dispersion agent, and described caking agent is the caking agent of zirconium sulfate class and aluminium esters of gallic acid.
The pigment of described dust formation is to brush pigment and obtain with pressurized air.
The base vector difference that the coated pigment of different colours is used, the additives of pigments difference that different coated pigments is used.
Advantage of the present invention is: it is directed good 1, to coat, and the misoperation that cheap base vector coats pigment can not occur, also can not waste expensive pigment; 2, pigment is the dust formation agent, is uniformly dispersed; 3, be added with auxiliary agent, coating is thin and firm; 4, the oil absorbency of product is low, opacifying power good.
Embodiment
Through several specific embodiments of describing the present invention is done further elaboration below, but be not qualification of the present invention.
Embodiment 1: prepare white coated pigment
The first step is opened impeller to 400 commentaries on classics/min earlier, and the bleaching synthetic calcium silicate of selecting for use is dropped in the stirrer, keeps 5 minutes working order; Second goes on foot, and adds the auxiliary agent of base-material amount 3% again, and 400 commentaries on classics/min turned round 5 minutes; The 3rd step; The impeller rotating speed is left to 900 commentaries on classics/min; Again with base vector: the titanium oxide of the weight ratio of titanium oxide=80: 20 is through the pressurized air dust formation; Get in the impeller and advanced coating 10 minutes, can make the titanium oxide orientation be coated on synthetic calcium silicate particulate surface uniformly, make white spherical coated pigment with wetting base vector (nucleome).
Embodiment 2: prepare blue coated pigment
The first step is opened impeller to 400 commentaries on classics/min earlier, and natural mineral calcite material is dropped in the stirrer, keeps 5 minutes working order; Second goes on foot, and adds the auxiliary agent of base-material amount 3% again, and 400 commentaries on classics/min turned round 5 minutes; The 3rd step; The impeller rotating speed is left to 900 commentaries on classics/min; Again with base vector: the phthalocyanine blue of the weight ratio of phthalocyanine blue=85: 15 is through the pressurized air dust formation; Get in the impeller and advanced coating 10 minutes, can make phthalocyanine blue be coated on calcite material particle uniformly in appearance, make blue coated pigment with wetting base vector (nucleome).
Embodiment 3: prepare green coated pigment
The first step is started impeller, the natural mineral ground barium sulfate dropped in the impeller, and control impeller rotating speed, making the impeller rotating speed is 400 commentaries on classics/min working conditions 5 minutes; Second step, the auxiliary agent of adding base-material amount 3%, 400 commentaries on classics/min turned round 5 minutes; The 3rd step; Impeller is left to 900 commentaries on classics/min; Again in base vector: the phthalocyanine green of the ratio of the weight ratio of phthalocyanine green=83: 17 is used the pressurized air dust formation; Send in the impeller and advanced coating 10 minutes, phthalocyanine green is coated on the ground barium sulfate particle uniformly, make green coated pigment with wetting base vector (nucleome).
Embodiment 4: prepare yellow coated pigment
Processing condition and material proportional quantity are with embodiment 1, but the base vector that uses is the single crystal quartz stone flour, and additives of pigments is to use organic yellow, can make yellow coating pigment.
Embodiment 5: prepare red coated pigment
Processing condition and material proportional quantity are with embodiment 1, and the base vector of use is for being talcum powder, and additives of pigments is red with sun-proof, can make red coating pigment.
Table 1: the process step of the reparation technology embodiment of coated pigment, raw materials used and raw material consumption:
Table 2
" 1-5 " climbs the quality product of precious ZL92109268.7 for the South Sea, and " one to five " is the quality product of the inventive method.
Claims (5)
1. the preparation method of coated pigment comprises the refinement of base vector and pigment, it is characterized in that: adopt dried wet method to carry out coating, its step is following:
1) starts impeller earlier, rotating speed is risen to 400 commentaries on classics/min, then base vector is dropped in the stirrer, kept rotating speed 5 minutes, make powder produce self-heating, evaporate a spot of moisture content in the base-material;
2) 1～5% of adding base-material amount dispersion agent and caking agent, 400 commentaries on classics/min running 5 minutes makes dispersion agent and caking agent even in the base-material surface coated, and described caking agent is zirconium sulfate class and aluminium esters of gallic acid;
3) again the impeller rotating speed is risen to 900 commentaries on classics/min; Wetting base-material the high speed of impeller throw get rid of and the centrifugation effect state under, add the pigment of dust formation, add-on is in the ratio of weight ratio=70～90 ︰ 30～10 of Ji Liao ︰ pigment; Coating 10 minutes; Make the coated pigment temperature reach 110～150 ℃, caking agent solidifies very soon, promptly makes spherical coated pigment.
2. preparation method according to claim 1 is characterized in that: described base vector is bleaching synthetic calcium silicate, tiff, calcite, talcum or single crystal quartz stone natural mineral powder.
3. preparation method according to claim 1 is characterized in that: described pigment is mineral dye or pigment dyestuff.
4. preparation method according to claim 1 is characterized in that: described dispersion agent is a silicon class dispersion agent.
5. preparation method according to claim 1 is characterized in that: the pigment of described dust formation is to brush pigment and obtain with pressurized air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101139839A CN101538421B (en) | 2009-04-11 | 2009-04-11 | Method for preparing coated pigment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101139839A CN101538421B (en) | 2009-04-11 | 2009-04-11 | Method for preparing coated pigment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101538421A CN101538421A (en) | 2009-09-23 |
| CN101538421B true CN101538421B (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101139839A Expired - Fee Related CN101538421B (en) | 2009-04-11 | 2009-04-11 | Method for preparing coated pigment |
Country Status (1)
| Country | Link |
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| CN (1) | CN101538421B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108997787A (en) * | 2018-08-10 | 2018-12-14 | 天津城建大学 | High near infrared reflectivity rutile TiO2/ phthalocyanine blue composite pigment and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070207A (en) * | 1992-08-15 | 1993-03-24 | 海南攀宝建材工业有限公司 | The preparation method of coating pigment |
| US5246780A (en) * | 1991-08-29 | 1993-09-21 | L'oreal | Coated particle for use in cosmetic preparations and method |
| CN1524905A (en) * | 2003-02-28 | 2004-09-01 | 上海一品国际颜料有限公司 | Granulating method for powder pigment |
| CN1837296A (en) * | 2006-04-21 | 2006-09-27 | 江苏镇钛化工有限公司 | Process for preparing titanium dioxide with high weatherability |
-
2009
- 2009-04-11 CN CN2009101139839A patent/CN101538421B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5246780A (en) * | 1991-08-29 | 1993-09-21 | L'oreal | Coated particle for use in cosmetic preparations and method |
| CN1070207A (en) * | 1992-08-15 | 1993-03-24 | 海南攀宝建材工业有限公司 | The preparation method of coating pigment |
| CN1524905A (en) * | 2003-02-28 | 2004-09-01 | 上海一品国际颜料有限公司 | Granulating method for powder pigment |
| CN1837296A (en) * | 2006-04-21 | 2006-09-27 | 江苏镇钛化工有限公司 | Process for preparing titanium dioxide with high weatherability |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-152466A 2006.06.15 |
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| CN101538421A (en) | 2009-09-23 |
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