CN113337023A - Masterbatch production process for improving coloring uniformity of plastic masterbatch - Google Patents
Masterbatch production process for improving coloring uniformity of plastic masterbatch Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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Abstract
The invention discloses a masterbatch production process for improving the coloring uniformity of plastic masterbatch, which belongs to the technical field of plastic coloring, and comprises the steps of preparation of saponified pigment particles, preparation of modified pigment particles, mixing and polymerization of raw materials, cooling, drying, granulating and packaging, wherein a magnesium stearate protective layer is generated on organic pigment particles by using a metal soap method, the organic pigment particles can be prevented from being coagulated in grinding through the protection of the magnesium stearate protective layer, then the organic pigment particles with the magnesium stearate protective layer are ground, the surfaces of the organic pigment particles are charged through a polyacrylamide solution, at the moment, the organic pigment particles are added into molten polyethylene, and are mutually dispersed under the action of charge repulsion force, so that the organic pigment particles are prevented from being mutually gathered, thereby facilitating the uniform mixing of the organic pigment particles into the polyethylene.
Description
Technical Field
The invention relates to the technical field of plastic coloring, in particular to a masterbatch production process for improving coloring uniformity of plastic masterbatch.
Background
The color master batch is called color master batch and also called color seed, and is a special colorant for novel high polymer materials, also called pigment preparation. The color master batch is mainly used for plastic dyeing. The color master batch is composed of three basic elements of pigment or dye, carrier and additive, and is an aggregate prepared by uniformly loading an excessive amount of pigment into a resin, which can be called pigment concentrate, so that its coloring power is higher than that of the pigment itself, and a small amount of color master batch is mixed with uncolored resin during processing to obtain a colored resin or product with designed pigment concentration.
The plastic is colored by using the color master batch in the coloring process, the color master batch is prepared by adding the pigment and the additive into the carrier resin and then smelting and mixing, but the pigment is easy to gather after being added, so that the carrier resin and the pigment are not uniformly mixed, and meanwhile, the plastic coloring unevenness caused by the non-uniform mixing of the carrier resin and the pigment is easy to occur in the coloring process of the color master batch due to the general dispersing performance of the color master batch in the plastic.
Disclosure of Invention
The invention aims to provide a masterbatch production process for improving the coloring uniformity of a plastic masterbatch, so as to solve the problem of poor coloring uniformity of the existing plastic masterbatch in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a masterbatch production process for improving the coloring uniformity of plastic masterbatch comprises the following steps:
the method comprises the following steps: putting organic pigment into a crusher for crushing, then selecting organic pigment with the particle size smaller than 1.2um, adding the screened organic pigment and soap solution into a stirrer, starting the stirrer for stirring, after 20min, raising the temperature of the stirrer to 50 ℃, then adding magnesium chloride solution into the stirrer, stirring again for 1.5-2 h, filtering the mixed liquid in the stirrer, retaining the particles therein, and putting the retained particles into a temperature of 45-55 ℃ for low-temperature drying, thus obtaining saponified pigment particles;
step two: grinding the saponified pigment particles in a ball mill, then selecting saponified pigment particles with the particle size of 20-80 nm, adding the saponified pigment particles into a polyacrylamide solution, stirring for 10-15 min, filtering, retaining the particles, and drying the retained particles at a low temperature of 45-55 ℃ to obtain modified pigment particles;
step three: mixing and stirring a plastic coupling agent, an antioxidant, polyethylene wax, a filler and modified pigment particles, simultaneously adding polyethylene resin into a kneader, then heating the polyethylene resin to a molten state, then adding the uniformly stirred plastic coupling agent, the antioxidant, the polyethylene wax, the filler and the modified pigment particles into the kneader, then carrying out mixing polymerization on the raw materials through the kneader, and obtaining a color master batch raw material after 30 min;
step four: adding the color master batch raw material into a single-screw extruder, then extruding the color master batch raw material by the single-screw extruder, and cooling, drying, granulating and packaging to obtain the color master batch with uniform coloring.
Preferably, the stirring before heating in the step one and the stirring in the step two are both gas-filling stirring, the stirring speed at the moment is 200-300 r/min, and the stirring speed after heating in the step one is 600-800 r/min.
Preferably, the concentration of the polyacrylamide solution in the second step is 20% to 30%, and the mass ratio of polyacrylamide to modified pigment particles in the polyacrylamide is 1: 120 to 150.
Preferably, the plastic coupling agent is a monoalkoxy titanate coupling agent, the filler is at least one of magnesium oxide, titanium dioxide or glass fiber, and the particle size of the filler is 20-80 nm.
Preferably, when the filler comprises magnesium oxide, titanium dioxide and glass fibers, the mass ratio of the magnesium oxide to the titanium dioxide to the glass fibers is 3-6: 1: 8 to 12.
Preferably, the antioxidant is a mixture of 1076 hindered phenol antioxidant and 2, 4-dihydroxy benzophenone, and the mass ratio of 1076 hindered phenol antioxidant to 2, 4-dihydroxy benzophenone is 5-6: 1.
preferably, the mass ratio of the polyethylene resin, the plastic coupling agent, the antioxidant, the polyethylene wax, the filler and the modified pigment particles is 30-40: 2-3: 1-2: 3-8: 22-30: 28 to 32.
Preferably, the soap solution is prepared by saponifying white oil, canola oil, olive oil, palm oil, coconut oil, beeswax, sodium hydroxide and water, wherein the mass ratio of the white oil, the canola oil, the olive oil, the palm oil, the coconut oil, the beeswax, the sodium hydroxide and the water is 15-16: 14-15: 14-15: 9-10: 10-11: 3-4: 8-9: 18 to 20.
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes a metal soap method to generate a magnesium stearate protective layer on organic pigment particles, the organic pigment particles can be prevented from coagulating in grinding through the protection of the magnesium stearate protective layer, then the organic pigment particles with the magnesium stearate protective layer are ground again, the particle diameter of the organic pigment particles is similar to the particle diameter in colloid, then the surfaces of the organic pigment particles are charged with a certain amount of charges through a polyacrylamide solution, at the moment, the organic pigment particles are added into molten polyethylene, and the organic pigment particles are mutually dispersed under the action of charge repulsion, so that the organic pigment particles are prevented from gathering together, and the organic pigment particles are conveniently and uniformly mixed into the polyethylene.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, the present invention provides a technical solution: a masterbatch production process for improving the coloring uniformity of plastic masterbatch comprises the following steps:
the method comprises the following steps: putting organic pigment into a crusher for crushing, then selecting organic pigment with the particle size of less than 1.2um, adding the screened organic pigment and soap liquid into a stirrer, starting the stirrer for stirring, after 20min, wetting organic pigment particles by the soap liquid, forming a layer of saponified liquid on the surfaces of the particles, raising the temperature of the stirrer to 50 ℃, then adding magnesium chloride solution into the stirrer, stirring for 1.5-2 h again, enabling magnesium ions in the magnesium chloride solution to chemically react with the saponified liquid on the surfaces of the particles to generate a magnesium stearate protective layer, so as to ensure that the organic pigment particles cannot generate flocculation during grinding, filtering the mixed liquid in the stirrer, retaining the particles therein, putting the retained particles into a temperature of 45-55 ℃ for low-temperature drying, flatly laying the particles on a drying plate during drying, wherein the laying height is not more than 2mm, the saponified pigment particles can be obtained after the particles are dried;
step two: grinding the saponified pigment particles in a ball mill, then selecting saponified pigment particles with the particle size of 20-80 nm, adding the saponified pigment particles into a polyacrylamide solution, stirring for 10-15 min, filtering, retaining the particles, enabling the polyacrylamide in the polyacrylamide solution to enable the surfaces of fine particles of the saponified pigment particles to carry a certain amount of charges to form an electric double layer, reducing the attraction among the pigment particles by means of the repulsive force among the electric double layers, and placing the retained particles at the temperature of 45-55 ℃ for low-temperature drying to obtain modified pigment particles;
step three: mixing and stirring a plastic coupling agent, an antioxidant, polyethylene wax, a filler and modified pigment particles, simultaneously adding polyethylene resin into a kneader, then heating the polyethylene resin to a molten state, then adding the uniformly stirred plastic coupling agent, the antioxidant, the polyethylene wax, the filler and the modified pigment particles into the kneader, then carrying out mixing polymerization on the raw materials through the kneader, and obtaining a color master batch raw material after 30 min;
step four: adding the color master batch raw material into a single-screw extruder, then extruding the color master batch raw material by the single-screw extruder, and cooling, drying, granulating and packaging to obtain the color master batch with uniform coloring.
Stirring before heating in the step one and stirring in the step two are carried out by adding air, the stirring speed at the moment is 200-300 r/min, and the stirring speed after heating in the step one is 600-800 r/min.
In the second step, the concentration of the polyacrylamide solution is 20% -25%, and the mass ratio of polyacrylamide to modified pigment particles in polyacrylamide is 1: 120 to 140.
The plastic coupling agent is a monoalkoxy titanate coupling agent, the filler comprises titanium dioxide and glass fiber, and the particle size of the filler is 20-80 nm.
The mass ratio of the titanium dioxide to the glass fiber is 1: 11 to 12.
The antioxidant is a mixture of 1076 hindered phenol antioxidant and 2, 4-dihydroxy benzophenone, and the mass ratio of 1076 hindered phenol antioxidant to 2, 4-dihydroxy benzophenone is 5-6: 1.
the mass ratio of the polyethylene resin to the plastic coupling agent to the antioxidant to the polyethylene wax to the filler to the modified pigment particles is 30-35: 2.5-3: 1-2: 5-8: 22-26: 28-30.
The soap solution is prepared by saponifying white oil, canola oil, olive oil, palm oil, coconut oil, beeswax, sodium hydroxide and water, wherein the mass ratio of the white oil to the canola oil to the olive oil to the palm oil to the coconut oil to the beeswax to the sodium hydroxide to the water is 15-16: 14-15: 14-15: 9-10: 10-11: 3-4: 8-9: 18 to 20.
Example 2:
referring to fig. 1, the present invention provides a technical solution: a masterbatch production process for improving the coloring uniformity of plastic masterbatch comprises the following steps:
the method comprises the following steps: putting organic pigment into a crusher for crushing, then selecting organic pigment with the particle size smaller than 1.2um, adding the screened organic pigment and soap solution into a stirrer, starting the stirrer for stirring, after 20min, raising the temperature of the stirrer to 50 ℃, then adding magnesium chloride solution into the stirrer, stirring again for 1.5-2 h, filtering the mixed liquid in the stirrer, retaining the particles therein, and putting the retained particles into a temperature of 45-55 ℃ for low-temperature drying, thus obtaining saponified pigment particles;
step two: grinding the saponified pigment particles in a ball mill, then selecting saponified pigment particles with the particle size of 20-80 nm, adding the saponified pigment particles into a polyacrylamide solution, stirring for 10-15 min, filtering, retaining the particles, and drying the retained particles at a low temperature of 45-55 ℃ to obtain modified pigment particles;
step three: mixing and stirring a plastic coupling agent, an antioxidant, polyethylene wax, a filler and modified pigment particles, simultaneously adding polyethylene resin into a kneader, then heating the polyethylene resin to a molten state, then adding the uniformly stirred plastic coupling agent, the antioxidant, the polyethylene wax, the filler and the modified pigment particles into the kneader, then carrying out mixing polymerization on the raw materials through the kneader, and obtaining a color master batch raw material after 30 min;
step four: adding the color master batch raw material into a single-screw extruder, then extruding the color master batch raw material by the single-screw extruder, and cooling, drying, granulating and packaging to obtain the color master batch with uniform coloring.
Stirring before heating in the step one and stirring in the step two are carried out by adding air, the stirring speed at the moment is 200-300 r/min, and the stirring speed after heating in the step one is 600-800 r/min.
In the second step, the concentration of the polyacrylamide solution is 25% -30%, and the mass ratio of polyacrylamide to modified pigment particles in polyacrylamide is 1: 140 to 150.
The plastic coupling agent is a monoalkoxy titanate coupling agent, the filler comprises magnesium oxide, titanium dioxide and glass fiber, and the particle size of the filler is 20-80 nm.
The mass ratio of the magnesium oxide to the titanium dioxide to the glass fiber is 3-6: 1: 8 to 11.
The antioxidant is a mixture of 1076 hindered phenol antioxidant and 2, 4-dihydroxy benzophenone, and the mass ratio of 1076 hindered phenol antioxidant to 2, 4-dihydroxy benzophenone is 5-6: 1.
the mass ratio of the polyethylene resin to the plastic coupling agent to the antioxidant to the polyethylene wax to the filler to the modified pigment particles is 35-40: 2-2.5: 1-2: 3-5: 26-30: 30 to 32.
The soap solution is prepared by saponifying white oil, canola oil, olive oil, palm oil, coconut oil, beeswax, sodium hydroxide and water, wherein the mass ratio of the white oil to the canola oil to the olive oil to the palm oil to the coconut oil to the beeswax to the sodium hydroxide to the water is 15-16: 14-15: 14-15: 9-10: 10-11: 3-4: 8-9: 18 to 20.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A masterbatch production process for improving coloring uniformity of plastic masterbatch is characterized in that: the production process of the color master batch for improving the coloring uniformity of the plastic color master batch comprises the following steps:
the method comprises the following steps: putting organic pigment into a crusher for crushing, then selecting organic pigment with the particle size smaller than 1.2um, adding the screened organic pigment and soap solution into a stirrer, starting the stirrer for stirring, after 20min, raising the temperature of the stirrer to 50 ℃, then adding magnesium chloride solution into the stirrer, stirring again for 1.5-2 h, filtering the mixed liquid in the stirrer, retaining the particles therein, and putting the retained particles into a temperature of 45-55 ℃ for low-temperature drying, thus obtaining saponified pigment particles;
step two: grinding the saponified pigment particles in a ball mill, then selecting saponified pigment particles with the particle size of 20-80 nm, adding the saponified pigment particles into a polyacrylamide solution, stirring for 10-15 min, filtering, retaining the particles, and drying the retained particles at a low temperature of 45-55 ℃ to obtain modified pigment particles;
step three: mixing and stirring a plastic coupling agent, an antioxidant, polyethylene wax, a filler and modified pigment particles, simultaneously adding polyethylene resin into a kneader, then heating the polyethylene resin to a molten state, then adding the uniformly stirred plastic coupling agent, the antioxidant, the polyethylene wax, the filler and the modified pigment particles into the kneader, then carrying out mixing polymerization on the raw materials through the kneader, and obtaining a color master batch raw material after 30 min;
step four: adding the color master batch raw material into a single-screw extruder, then extruding the color master batch raw material by the single-screw extruder, and cooling, drying, granulating and packaging to obtain the color master batch with uniform coloring.
2. The masterbatch production process for improving coloring uniformity of plastic masterbatch according to claim 1, wherein: stirring before heating in the step one and stirring in the step two are carried out by adding air, the stirring speed at the moment is 200-300 r/min, and the stirring speed after heating in the step one is 600-800 r/min.
3. The masterbatch production process for improving coloring uniformity of plastic masterbatch according to claim 1, wherein: the concentration of the polyacrylamide solution in the second step is 20% -30%, and the mass ratio of polyacrylamide to modified pigment particles in the polyacrylamide is 1: 120 to 150.
4. The masterbatch production process for improving coloring uniformity of plastic masterbatch according to claim 1, wherein: the plastic coupling agent is a monoalkoxy titanate coupling agent, the filler is at least one of magnesium oxide, titanium dioxide or glass fiber, and the particle size of the filler is 20-80 nm.
5. The masterbatch production process for improving the coloring uniformity of plastic masterbatch according to claim 4, wherein: when the filler comprises magnesium oxide, titanium dioxide and glass fibers, the mass ratio of the magnesium oxide to the titanium dioxide to the glass fibers is 3-6: 1: 8 to 12.
6. The masterbatch production process for improving coloring uniformity of plastic masterbatch according to claim 1, wherein: the antioxidant is a mixture of 1076 hindered phenol antioxidant and 2, 4-dihydroxy benzophenone, and the mass ratio of 1076 hindered phenol antioxidant to 2, 4-dihydroxy benzophenone is 5-6: 1.
7. the masterbatch production process for improving coloring uniformity of plastic masterbatch according to claim 1, wherein: the weight ratio of the polyethylene resin to the plastic coupling agent to the antioxidant to the polyethylene wax to the filler to the modified pigment particles is 30-40: 2-3: 1-2: 3-8: 22-30: 28 to 32.
8. The masterbatch production process for improving coloring uniformity of plastic masterbatch according to claim 1, wherein: the soap solution is prepared by saponifying white oil, canola oil, olive oil, palm oil, coconut oil, beeswax, sodium hydroxide and water, wherein the mass ratio of the white oil to the canola oil to the olive oil to the palm oil to the coconut oil to the beeswax to the sodium hydroxide to the water is 15-16: 14-15: 14-15: 9-10: 10-11: 3-4: 8-9: 18 to 20.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410132A (en) * | 2021-12-27 | 2022-04-29 | 江西隆源化工股份有限公司 | Preparation method of easily-dispersible pigment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1148266A (en) * | 1965-06-30 | 1969-04-10 | Ici Ltd | Manufacture of polymer compositions |
| CN102532666A (en) * | 2012-01-05 | 2012-07-04 | 东莞市德诚塑化科技有限公司 | Insulated black masterbatch and preparation method thereof |
| CN103849058A (en) * | 2012-12-04 | 2014-06-11 | 青岛三利中德美水设备有限公司 | Coloring master batches for polyethylene and preparation method thereof |
-
2021
- 2021-05-06 CN CN202110487920.0A patent/CN113337023A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1148266A (en) * | 1965-06-30 | 1969-04-10 | Ici Ltd | Manufacture of polymer compositions |
| CN102532666A (en) * | 2012-01-05 | 2012-07-04 | 东莞市德诚塑化科技有限公司 | Insulated black masterbatch and preparation method thereof |
| CN103849058A (en) * | 2012-12-04 | 2014-06-11 | 青岛三利中德美水设备有限公司 | Coloring master batches for polyethylene and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114410132A (en) * | 2021-12-27 | 2022-04-29 | 江西隆源化工股份有限公司 | Preparation method of easily-dispersible pigment |
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