CN111704760A

CN111704760A - Monochromatic organic master batch, preparation method and application thereof, and master batch

Info

Publication number: CN111704760A
Application number: CN202010584583.2A
Authority: CN
Inventors: 桂俊靓; 周强; 谢秉昆
Original assignee: Fujian Ziniu Plastic Technology Co ltd
Current assignee: Fujian Ziniu Plastic Technology Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-09-25

Abstract

The invention provides a monochromatic organic master batch, a preparation method and application thereof, and a color master batch, and belongs to the technical field of pigments. The raw materials of the monochromatic organic master batch comprise, by weight, 41-80% of organic pigment, 15-59% of polymer material and no more than 10% of dispersing agent. The monochromatic organic master batch is obtained by mixing the raw material components under the heating condition and then extruding. At least a portion of the polyolefin resin is in a molten state during the mixing. The single-color organic master batch has good dispersibility and tinting strength. The preparation method comprises the steps of mixing the raw material components under the heating condition and then extruding and molding. The method is simple, easy to operate, short in time, high in efficiency and low in influence on the cost of the color master. The monochromatic organic master batch can be used for preparing the color master batch, the production process is dust-free, environment-friendly and clean, the production line is easy to clean, and the processing efficiency and the chromatic aberration control rate of the color master batch can be effectively improved. The color master batch containing the monochromatic organic master batch has flexible formula design and lower cost.

Description

Monochromatic organic master batch, preparation method and application thereof, and master batch

Technical Field

The invention relates to the technical field of pigments, in particular to a monochromatic organic master batch, a preparation method and application thereof, and a color master batch.

Background

The Color Master Batch is called Color Master Batch, also called Color seed, and is a special colorant for high molecular materials. The color master batch is composed of three basic elements of a plurality of pigments or dyes, a carrier and an additive, and particles are prepared by uniformly loading an excessive amount of pigment into resin. Because the coloring power of the pigment is superior to that of the pigment, the pigment has no dust pollution, the addition proportion is low, the pigment is easy to be mixed with coloring resin, and the pigment can widely replace powdery pigment in thermoplastic plastic coloring at present.

Organic pigments are insoluble organic substances and are generally added to a substrate in a highly dispersed state to color the substrate. It is fundamentally different from dyes in that: dyes are soluble in the dyeing medium used, whereas pigments are insoluble neither in the medium in which they are used nor in the substrate to be dyed. Organic pigments are widely used for coloring primary pulp of ink, paint, coating and synthetic fiber, and pigment printing of fabric, coloring of plastic, rubber and leather, etc., wherein the pigment usage amount of the ink is the largest. The organic pigment is insoluble in plastics, and because the particle size and the secondary particle size of the organic pigment are micron-sized or nano-sized, the organic pigment is not easy to disperse in the plastics, and is easy to form agglomerate color points, thereby having great negative influence on the quality of final spinning, films and thick plastic products with high surface quality requirements.

Some well-known color masterbatch companies, especially spinning masterbatch companies, often use pigment pre-dispersed or medium-low concentration monochromatic master batches of organic pigments as raw materials. The middle-low concentration monochromatic pearlescent master batch used as a raw material for producing the color master batch has certain defects in the design of a formula, and is easy to cause secondary processing degradation of a large proportion of plastics, but the increase of the concentration of the organic pigment can not only result in higher cost, but also easily cause low dispersibility of the organic pigment in the color master batch, and result in poor coloring strength of the color master batch.

In view of this, the present application is specifically made.

Disclosure of Invention

The first purpose of the invention comprises providing a monochromatic organic master batch which is beneficial to improving the dispersibility of organic pigments in the master batch and improving the tinting strength of the master batch.

The second purpose of the invention comprises providing a preparation method of the monochromatic organic master batch, which is simple, easy to operate, short in time, high in efficiency and low in influence on the cost of the master batch.

The third purpose of the invention comprises providing an application of the monochromatic organic master batch, for example, the monochromatic organic master batch can be used for preparing color master batches, the production process is free of dust, environment-friendly and clean, the production line is easy to clean, and the processing efficiency and the chromatic aberration control rate of the color master batches can be effectively improved.

The fourth purpose of the invention is to provide a color master batch containing the monochromatic organic master batch, which has flexible formula design, lower cost, small secondary processing amount and low oxidation risk when being used for processing plastics.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the application provides a monochromatic organic master batch, which comprises, by weight, 41-80% of organic pigment, 15-59% of polymer material and no more than 10% of dispersing agent.

The monochromatic organic master batch is prepared by mixing the raw material components under the heating condition and then granulating. At least a portion of the polymeric material is in a molten state during the mixing process.

The polymer material includes at least one of polyolefin resin, polyethylene resin, ethylene copolymer, ethylene-vinyl acetate copolymer, and polyolefin elastomer.

In some embodiments, the feedstock comprises 40-70% organic pigment, 20-57% polyolefin resin, and 3-10% dispersant.

In some embodiments, the single color organic master batch has a color strength of 101-104%.

In some embodiments, the organic pigment comprises any one of pigment yellow, pigment orange, pigment red, pigment violet, pigment green, and pigment blue.

Alternatively, pigment yellow includes pigment yellow 62, pigment yellow168, pigment yellow183, pigment yellow191, pigment yellow180, pigment yellow181, pigment yellow 151, pigment yellow13, pigment yellow14, pigment yellow17, pigment yellow81, pigment yellow 83, pigment yellow 155, pigment yellow93, pigment yellow95, pigment yellow110, pigment yellow214, pigment yellow 139, pigment yellow185, or pigment yellow 150.

Alternatively, pigment orange comprises pigment orange 68, pigment orange 13, pigment orange 16, pigment orange 34, pigment orange 64, or pigment orange 73.

Optionally, pigment red includes pigment red 48:2, pigment red 48:3, pigment red 53:1, pigment red 57:1, pigment red 166, pigment red 170, pigment red 177, pigment red 176, pigment red 254, pigment red 264, pigment red 122, pigment red 242, or pigment red 149.

Optionally, the pigment violet includes pigment violet 19 or pigment violet 23.

Optionally, pigment green comprises pigment green 7 or pigment green 36.

Optionally, the pigment blue comprises pigment blue 15, pigment blue 15:1, pigment blue 15:3, pigment blue 15:4, pigment blue 15:6, or pigment blue 60.

In some embodiments, the dispersant comprises at least one of a polyethylene wax, a hyperdispersant, and a micropowder.

In addition, the application also provides a preparation method of the monochromatic organic master batch, which comprises the following steps: mixing the raw material components under heating condition, and granulating.

In some embodiments, the temperature of mixing is 50-100 ℃ and the time of mixing is 10-30 min.

In some embodiments, the mixing is performed by continuously mixing the raw materials.

In some embodiments, the granulation is performed by single screw extrusion or twin screw extrusion.

In some embodiments, extrusion molding is performed by single screw extrusion or twin screw extrusion.

In some embodiments, the extrusion is performed using a twin screw extruder equipped with a vacuum degassing device.

In some embodiments, the extruder each zone temperature and the die temperature are 60 to 200 ℃.

In some embodiments, an extruder with seven zones is used for extrusion, and the temperatures of the first zone to the seventh zone are 60-140 ℃, 90-160 ℃, 130-.

In some embodiments, the temperatures of the first zone to the seventh zone are 90-110 ℃, 120-.

In some embodiments, the screw speed during extrusion is 400-1200 rpm.

In some embodiments, before the extrusion molding, the method further comprises cooling and crushing the mixed raw materials.

In some embodiments, after extrusion molding, the method further comprises pelletizing and separating the extruded material.

In some embodiments, the pelletizing is performed using a die hot cut or underwater pelletizing.

In some embodiments, the pelletized material is conveyed by a blower to a separator for separation.

In some embodiments, the number of separations is at least 2.

In addition, the application also provides an application of the monochromatic organic master batch in preparing color master batches.

In addition, the application also provides a color master batch which contains the monochromatic organic master batch.

The application provides a monochromatic organic master batch, a preparation method and application thereof, and the beneficial effects of the master batch comprise:

the monochromatic organic master batch provided by the application has the pigment concentration of 41-80 wt%, so that the formula design of the master batch is flexible, the content of the used dispersing agent is only less than 10 wt%, and even if the dispersing agent contains wax, the content of the wax in the whole raw material is not more than 10 wt%, thereby being beneficial to avoiding the problem that the mixed material is easy to agglomerate due to excessive wax.

The raw materials are mixed under a heating condition and then granulated, and at least a part of polymer materials, such as polyolefin resin, are in a molten state by heating the materials in the mixing process, so that the dispersibility of the raw materials can be effectively improved compared with the existing cold mixing (normal-temperature mixing) process, and therefore, the high-concentration monochromatic organic master batch is obtained while the dispersibility is ensured, and the coloring strength of the master batch is improved.

The preparation method is simple, easy to operate, short in time, high in efficiency and low in influence on the cost of the color master. The obtained monochromatic organic master batch has good dispersibility and good tinting strength. The method is used for preparing the color master, has no dust in the production process, is environment-friendly and clean, is easy to clean a production line, and can effectively improve the processing efficiency and the color difference control rate of the color master. The color master batch containing the monochromatic organic master batch has flexible formula design and lower cost.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

The following specifically describes a monochromatic organic master batch, a preparation method and an application thereof, and a color master batch provided by the present application.

The inventor finds that the existing home-made monochromatic master batch prepared by local companies is usually low in concentration (only about 10-25 wt%), mainly takes polymer resin as a main carrier, and the concentration of the polymer resin is as high as 90 wt%, so that the design of the master batch formula is limited, and the influence on the cost of the master batch is large. Meanwhile, the low-concentration monochromatic master batch is simple in material mixing, high in secondary processing amount and high in oxidation risk when used for preparing plastics. The pigment concentration of the medium-concentration monochromatic master batch self-made by part of local companies can reach up to 40 wt%, the resin content is 50-75 wt%, and the wax content is up to 20 wt%. The concentration of the monochromatic master batch pigment in European and American markets can reach 60 wt%, but the pigment takes oligomer wax as a main carrier, the content of the wax is 40-60 wt%, and because the wax content is too much, the mixed material is easy to agglomerate and is easy to oxidize and degrade, so that the product has precipitation risk, and the influence on the master batch cost is large.

In view of the above, the present application provides a monochromatic organic mother particle, which comprises, by weight, 41-80% of an organic pigment, 15-59% of a polymer material, and not more than 10% of a dispersant (i.e., with or without a dispersant).

In some preferred embodiments, the raw material includes 40 to 70% of an organic pigment, 20 to 57% of a polyolefin resin, and 3 to 10% of a dispersant.

The monochromatic organic master batch provided by the application has the pigment concentration of 41-80 wt%, so that the formula design of the master batch is flexible, the content of the used dispersing agent is only less than 10 wt%, and even if the dispersing agent contains wax, the content of the wax in the whole raw material is not more than 10 wt%, thereby being beneficial to avoiding the problem of easy agglomeration of mixed materials caused by excessive wax.

However, because the contents of the resin and the dispersant used as the carriers are both reduced compared with the prior art, especially the content of the dispersant is greatly reduced, and the content of the organic pigment is increased, the problem of poor dispersibility of the organic pigment is easily caused in the prior preparation process, in view of the above, in the application, all the raw materials are mixed under a heating condition and then granulated, and the materials are heated in the mixing process, so that at least a part of polymer materials, such as polyolefin resin, are in a molten state.

For reference, the coloring strength of the monochromatic organic master batch in the application can be 101-104%.

In some embodiments, the organic pigment may include, for example, any one of pigment yellow, pigment orange, pigment red, pigment violet, pigment green, and pigment blue.

The pigment Yellow may include, for example, pigment Yellow 62(c.i. pigment Yellow 62), pigment Yellow168 (c.i. pigment Yellow168), pigment Yellow183 (c.i. pigment Yellow183), pigment Yellow191 (c.i. pigment Yellow191), pigment Yellow180 (c.i. pigment Yellow180), pigment Yellow181 (c.i. pigment Yellow181), pigment Yellow 151(c.i. pigment Yellow 151), pigment Yellow13 (c.i. pigment Yellow13), pigment Yellow14 (c.i. pigment Yellow14), pigment Yellow17 (c.i. pigment Yellow17), pigment Yellow81 (c.i. pigment Yellow81), pigment Yellow 83(c.i. pigment Yellow 83), pigment Yellow 155(c.i. pigment Yellow 155), pigment Yellow 139(c.i. pigment Yellow 139), pigment Yellow 150(c.i. pigment Yellow 139), pigment Yellow 139(c.i. pigment Yellow185), pigment Yellow 139(c.i. pigment Yellow 139), pigment Yellow214 (c.i. pigment Yellow 139), pigment Yellow 139 (c.i.i. pigment Yellow185), pigment Yellow 139.i.i.i. pigment Yellow185 (c.i. pigment Yellow 139).

Alternatively, the pigment Orange may include, for example, pigment Orange 68(c.i. pigment Orange 68), pigment Orange 13(c.i. pigment Orange 13), pigment Orange 16(c.i. pigment Orange 16), pigment Orange 34(c.i. pigment Orange 34), pigment Orange 64(c.i. pigment Orange 64), or pigment Orange 73(c.i. pigment Orange 73), and the like.

Alternatively, pigment Red may include, for example, pigment Red 48:2(c.i.pigment Red 48:2), pigment Red 48:3(c.i.pigment Red 48:3), pigment Red 53:1(c.i.pigment Red 53:1), pigment Red 57:1(c.i.pigment Red 57:1), pigment Red 166(c.i.pigment Red 166), pigment Red 170(c.i.pigment Red 170), pigment Red 177(c.i.pigment Red 177), pigment Red 176(c.i.pigment Red 176), pigment Red 254(c.i.pigment Red 254), pigment Red 264(c.i.pigment Red 149), pigment Red 122(c.i.pigment Red 122), pigment Red 242(c.i.pigment Red 149) or pigment Red 149(c.i.pigment Red 149).

Alternatively, the pigment violet may include, for example, pigment violet 19(c.i. pigment violet 19) or pigment violet 23(c.i. pigment violet 23), and the like.

Alternatively, the pigment Green may include, for example, pigment Green 7(c.i. pigment Green 7), pigment Green 36(c.i. pigment Green 36), or the like.

Alternatively, the pigment Blue may include, for example, pigment Blue 15(c.i. pigment Blue 15), pigment Blue 15:1(c.i. pigment Blue 15:1), pigment Blue 15:3(c.i. pigment Blue 15: 3), pigment Blue 15:4(c.i. pigment Blue 15: 4), pigment Blue 15:6(c.i. pigment Blue 15: 6), or pigment Blue 60(c.i. pigment Blue 60), and the like.

In summary, the organic masterbatch that this application provided is that tinting strength is high, the dispersibility is good, the environmental protection is good to be used, the density nature is good, the storage is convenient, color stability is good.

In addition, the application correspondingly provides a preparation method of the monochromatic organic master batch, which comprises the following steps: mixing the raw materials under heating, and granulating.

Compared with the processing mode of extruding after the mixture of the organic pigment and the polyolefin resin is cold mixed in a mixer in the prior art, the mode can improve the dispersibility of the organic pigment and prepare the high-concentration monochromatic master batch.

In this application, the mixing temperature may be 50-100 ℃, such as 50 ℃, 55 ℃, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃ or 100 ℃, and specifically may be maintained at a temperature within the above temperature range throughout the mixing process, or may be varied to a small extent within the above temperature range throughout the mixing process. The mixing time can be 10-30min, such as 10min, 15min, 20min, 25min or 30 min.

The mixing of the raw material components in a manner of mixing under heating can make at least a part of the polymer material, such as polyolefin resin and dispersant, in a molten state, so that the polymer material and the organic pigment form a uniform system, thereby improving the dispersibility of the organic pigment.

The organic pigment is mixed at the mixing temperature and the mixing time, so that the organic pigment has better dispersibility, and better mechanical properties of the material are kept. It is worth noting that the mixing temperature should not be too high, which would otherwise accelerate the thermo-oxidative aging of the resin and cause the mechanical properties to deteriorate, and too low, which would otherwise cause the material to scatter. In addition, the mixing time is not suitable to be too long, otherwise the physical and mechanical properties are influenced by excessive milling of materials, but the dispersion degree of the organic pigment is reduced and the production efficiency is reduced due to too short mixing time.

Preferably, the mixing in this application is performed by continuously mixing the raw materials, i.e. the raw material components are continuously metered simultaneously and separately and proportioned to form a stream containing the components, and when the stream enters the continuous mixer, the stream is continuously mixed to form a uniform stream. By adopting the method, the continuous operation procedures such as subsequent crushing, granulating and the like can be easily connected, and frequent operation is not needed during production.

In some embodiments, the granulation is performed by single screw extrusion or twin screw extrusion. The extrusion is preferably carried out using a twin-screw extruder provided with a vacuum degassing apparatus. Through setting up vacuum degassing unit, can in time carry out exhaust-gas treatment at the extrusion in-process, avoid behind high temperature heating water evaporation nevertheless can make the material moist in the extruder after can not effectively discharging, the gathering of agglomerating easily to reduce the dispersibility of material.

In some embodiments, the extruder zone temperature and die temperature may both be from 60 to 200 ℃.

In some preferred embodiments, an extruder with seven zones can be used for extrusion, during the extrusion process, the temperatures of the first zone to the seventh zone are 60-140 ℃, 90-160 ℃, 130-.

In some more preferred embodiments, the temperatures of the first zone to the seventh zone are 90-110 ℃, 120-.

For reference, the screw speed during the extrusion process may be 400-1200rpm, such as 400rpm, 500rpm, 600rpm, 800rpm, 1000rpm, 1200rpm, or the like.

By granulating under the extrusion conditions, the monochrome organic master batch with convenient storage and good color stability can be obtained.

Preferably, before the extrusion molding, the method further comprises the steps of cooling and crushing the mixed raw materials. It is worth explaining that the mixed materials are agglomerated into solid blocks after cooling, and then the solid blocks are crushed, which is beneficial to improving the extrusion molding effect.

Furthermore, after extrusion molding, the method also can comprise the steps of granulating and separating the extruded materials. The grain cutting is carried out according to the actual required grain diameter. For reference, the pellet may be cut by hot cutting at the head or underwater. The granulated material is, as a reference, conveyed by a blower to a separator for separation. Alternatively, the number of separations may be only 1, preferably at least 2, to adequately dewater, dry and cool the material. Wherein each separation can be performed in a different separator.

It should be noted that the remaining process steps not involved can refer to the prior art, and are not described herein in any greater detail.

In addition, this application has still provided the application of above-mentioned monochromatic organic master batch in preparation look female, and it is used for preparing look female, can make the production process dustless, the environmental protection is clean, and the production line clearance is easy, effectively promotes look female machining efficiency and colour difference control rate.

The color master batch containing the monochromatic organic master batch has flexible formula design and lower cost, and can be further used for processing plastics, so that the secondary processing amount is small, and the oxidation risk is low.

The features and properties of the present invention are described in further detail below with reference to examples.

Example 1

This example provides an organic monochrome master batch, which comprises, by weight, 70 wt% of an organic pigment, 27 wt% of a polyolefin resin, and 3 wt% of a dispersant.

Wherein the organic pigment is pigment red 48:2, the polymer material is PE, and the dispersant is a hyper-dispersant.

The monochromatic organic master batch is prepared by the following steps:

the organic pigment, PE and the dispersant are mixed according to the proportion for 20min in a continuous mixing mode at the temperature of 75 ℃. Then cooling, crushing and conveying to a twin-screw extruder with seven zones and a vacuum degassing device for extrusion molding. The temperatures of the first to seventh zones were 100 ℃, 125 ℃, 165 ℃, and 155 ℃ respectively, and the die temperature was 145 ℃. The screw speed during extrusion was 800 rpm.

Adopt the aircraft nose hot cutting to cut the grain to the material after the granulation, carry out 2 times separation in 2 separators through the material after will cutting the grain in proper order of air-blower afterwards.

The obtained monochromatic organic base particles had a tinting strength of 101%.

Example 2

This example provides an organic monochrome master batch, which comprises, by weight, 70 wt% of an organic pigment, 25 wt% of a polyolefin resin, and 5 wt% of a dispersant.

Wherein, the organic pigment is 70 percent of pigment red 48:2, the polymer material is PE and ethylene copolymer, and the dispersant is hyper-dispersant.

The monochrome organic master batch was prepared as in example 1 by the following procedure.

The obtained monochromatic organic master batch had a tinting strength of 104%.

Comparative example 1

This example provides an organic monochrome master batch, which comprises, by weight, 70 wt% of an organic pigment, 30 wt% of a polyolefin resin, and 0 wt% of a dispersant.

Wherein the organic pigment is pigment red 48:2, the polymer material is PE and ethylene copolymer, and the dispersant is hyper-dispersant.

The obtained monochromatic organic master batch had a tinting strength of 92%.

Test example 1

Compared with other powdery pigments or other colorant pre-dispersions, the organic monochromatic master batch has the following advantages:

test example 2

The color master batch is prepared by mixing the organic pigment, the additive and the resin, and the color master batch is prepared by mixing the high-concentration monochromatic master batch of the organic pigment and the resin.

A. The organic pigment, the additive and the resin are mixed to prepare a color master batch case:

wherein toner loss is 5 wt% (including drift, pick-up and clean-up);

raw material cost: 28.95 yuan/kg;

200kg order: the raw material cost is 5790 yuan;

the order 200kg processing fee is 1985 yuan, and comprises:

the double-screw extruder with the diameter of 35mm is used for processing, and the direct production cost is 100 yuan/hour;

to achieve good dispersion, extrusion throughput is limited, about 50kg per hour, and 2 passes of extrusion consume 8 hours, direct extrusion costs 100 x 8 to 800 yuan;

cleaning time of mixing and extruding equipment is 3 hours, and cleaning cost is 100 x 3-300 yuan;

production instability caused toning twice, each time for 1 hour, and the cost is 100 x 2-200 yuan;

the fixed cost of the equipment factory building is amortized by 40 yuan/hour 13 hours to 520 yuan;

the dust treatment cost is 5 yuan/hour 13 yuan/hour +10 yuan/kg of dangerous waste treatment cost is 10kg of dangerous waste which is 165 yuan;

the above predicted total cost is 7795 yuan.

B. Preparing color master batches by mixing high-concentration organic pigment monochromatic master batches with resin:

total loss 0.5 wt% (including cleanup);

raw material cost: 28.22 yuan/kg.

200kg order: raw material cost 5644 yuan

The order of 200kg processing fee is 532 yuan, and comprises the following components:

the processing is carried out by a twin-screw extruder with the diameter of 35mm, and the direct production cost is 100 yuan/hour.

Since dispersion was not considered, the extrusion throughput was increased, about 110kg per hour, and 1 extrusion pass consumed 1.8 hours, with a direct extrusion cost of 100 x 1.8 ═ 180 yuan.

The mixing and extrusion equipment was cleaned for 1 hour at a cost of 100 x 1 to 100 yuan.

Production instability caused toning once, 1 hour each, at a cost of 100 x 1 to 100 yuan.

The fixed cost of the equipment factory is amortized by 40 yuan/hour 3.8 hours 152 yuan.

The estimated total cost is 6176 yuan.

The comparative analysis results of the above cases are as follows:

the coloring strength is measured according to GBT13451.2-92 (approved by State administration of technical supervision 1992-04-28), and dispersibility is measured according to blowing method EN BS 13900-6 (according to the smaller plastic colorant larger than the document).

In addition, in summary, the single-color organic master batch provided by the application has better dispersibility and tinting strength. The preparation method is simple, easy to operate, short in time, high in efficiency and low in influence on the cost of the color master. The method can be used for preparing color master, has no dust in the production process, is environment-friendly and clean, is easy to clean a production line, and can effectively improve the processing efficiency and the color difference control rate of plastics. The color master batch containing the monochromatic organic master batch has flexible formula design and lower cost, and can be further used for processing plastics, so that the secondary processing amount is small, and the oxidation risk is low.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The monochromatic organic master batch is characterized in that the raw materials of the monochromatic organic master batch comprise, by weight, 41-80% of organic pigment, 15-59% of polymer material and no more than 10% of dispersing agent;

the monochrome organic master batch is prepared by mixing the raw material components under the heating condition and then granulating; at least a portion of the polymeric material is in a molten state during mixing;

the polymer material comprises at least one of polyolefin resin, polyethylene resin, ethylene copolymer, ethylene-vinyl acetate copolymer and polyolefin elastomer;

preferably, the raw material includes 40 to 70% of the organic pigment, 20 to 57% of the polyolefin resin, and 3 to 10% of the dispersant.

2. The monochrome organic master batch of claim 1, wherein the color strength of the monochrome organic master batch is 101-104%.

3. The monochrome organic master batch of claim 1, wherein the organic pigment comprises any one of pigment yellow, pigment orange, pigment red, pigment violet, pigment green and pigment blue;

preferably, the pigment yellow comprises pigment yellow 62, pigment yellow168, pigment yellow183, pigment yellow191, pigment yellow180, pigment yellow181, pigment yellow 151, pigment yellow13, pigment yellow14, pigment yellow17, pigment yellow81, pigment yellow 83, pigment yellow 155, pigment yellow93, pigment yellow95, pigment yellow110, pigment yellow214, pigment yellow 139, pigment yellow185, or pigment yellow 150;

preferably, the pigment orange comprises pigment orange 68, pigment orange 13, pigment orange 16, pigment orange 34, pigment orange 64, or pigment orange 73;

preferably, the pigment red comprises pigment red 48:2, pigment red 48:3, pigment red 53:1, pigment red 57:1, pigment red 166, pigment red 170, pigment red 177, pigment red 176, pigment red 254, pigment red 264, pigment red 122, pigment red 242, or pigment red 149;

preferably, the pigment violet comprises pigment violet 19 or pigment violet 23;

preferably, the pigment green comprises pigment green 7 or pigment green 36;

preferably, the pigment blue comprises pigment blue 15, pigment blue 15:1, pigment blue 15:3, pigment blue 15:4, pigment blue 15:6 or pigment blue 60.

4. The monochrome organic master batch of claim 1, wherein the dispersant comprises at least one of polyethylene wax, a hyper-dispersant, and a micro powder.

5. The method of preparing the monochrome organic master batch according to any one of claims 1 to 4, comprising the steps of: mixing the raw material components under heating condition, and granulating.

6. The method according to claim 5, wherein the mixing temperature is 50 to 100 ℃ and the mixing time is 10 to 30 min;

preferably, the mixing is carried out by continuously mixing the respective raw materials.

7. The method of claim 5, wherein the granulation is performed by single screw extrusion or twin screw extrusion;

preferably, a twin-screw extruder provided with a vacuum degassing device is used for extrusion;

preferably, the temperature of each zone of the extruder and the temperature of the die head are both 60-200 ℃;

preferably, a double-screw extruder with seven zones is adopted for extrusion, and the temperatures of the first zone to the seventh zone are 60-140 ℃, 90-160 ℃, 130-;

preferably, the temperatures of the first zone to the seventh zone are 90-110 ℃, 120-;

preferably, the screw speed during extrusion is 400-.

8. The preparation method according to any one of claims 5 to 7, further comprising cooling and crushing the mixed raw materials before granulation;

preferably, after the granulation, the method further comprises the steps of granulating and separating the extruded materials;

preferably, the grain cutting adopts machine head hot cutting or underwater grain cutting;

preferably, conveying the granulated materials to a separator by a blower for separation;

preferably, the number of separations is at least 2.

9. Use of the monochrome organic master batch according to any of claims 1 to 4 for the preparation of a color master batch.

10. Color concentrate comprising the monochrome organic concentrate according to any of claims 1 to 4.