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Preparation method for manganese violet coated pigment

A technology of manganese violet and pigments, which is applied in the field of preparation of coated manganese violet pigments, and can solve the problems of unmentioned preparation method and unpredictable coating of manganese violet

Active Publication Date: 2017-11-24
林一中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The BASF patent [T. Shireier, C. J. Zimmerman, G. M. Johnson, Manufacturing method of thin film structure and its composition CN102089684B, 2009.05.14] mentions the pigment manganese violet as the coating layer, but did not mention the method of preparation
[0005] It is a common method to use some surfactants to change the Zeta potential on the surface of the powder and then change the dispersion of the powder [Wang Haibo, Surfactant Dispersed Nano CeO 2 Research on the properties of powder [D] Central South University, 2005], but there is no report on the coating of powder surface pigments, especially the coating of manganese violet
According to the existing theory, it is impossible to predict which surfactant can improve the coating of manganese violet.

Method used

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  • Preparation method for manganese violet coated pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] In the reactor, add 60g of spherical silica with an average particle size of 3μm, add 900mL of water according to the solid-to-liquid weight ratio of 1 / 15 to prepare a slurry, first use sodium hydroxide to adjust the pH of the system between 5.5-6.0, Add at 78°C, use sodium hydroxide to control the pH of the system under the condition of 5.5-6.0, add 6mL of 1M aluminum chloride solution (0.3g as alumina, 0.5% to the substrate) within 0.5h; after the addition is completed Adjust the pH value of the system to 3.0, add 1mL triethoxyoctylsilane (accounting for about 1.7% of the weight of the substrate), and stir at 78°C for 0.5h; add 0.5g of MOA-9p (accounting for about 0.83% of the weight of the substrate %), stirred at 78°C for 0.5h; added 10g of color paste containing 40% manganese violet (about 4g of manganese violet, about 6.7% of the weight of the substrate), stirred at 78°C for 0.5h; then at 78°C, the pH Under the condition of =3.0, add 0.1gMOA-9p (accounting for abo...

Embodiment 2

[0062] In the reactor, add 60g of spherical silica with an average particle size of 3μm, add 600mL of water according to the solid-liquid weight ratio of 1 / 10 to make a slurry, and at this time the pH of the system is about 8, add 3mL of 1M Aluminum chloride solution (0.15g as alumina, 0.25% (by weight) to the base material), (in the process of adding aluminum chloride aqueous solution, ensure that the system pH is greater than 2, if the system pH value is less than 2, use it at the same time Sodium hydroxide neutralizes to control the pH value, if the pH value in this process is greater than 2, no need to control); then adjust the system pH value to 3.0, add 2mL triethoxyoctylsilane (accounting for about 3.4% of the substrate weight ), stirred at 78°C for 0.5h (subsequent operations maintained the system pH=3.0); added 1.0g MOA-9p (accounting for about 1.7% of the weight of the substrate), stirred at 78°C for 0.5h; added manganese-containing violet 20g of 40% color paste (abo...

Embodiment 3

[0064] In the reactor, add 60g of spherical silica with an average particle size of 3μm, add 600mL of water according to the solid-liquid weight ratio of 1 / 10 to make a slurry, and at this time the pH of the system is about 8, add 3mL of 1M Aluminum chloride aqueous solution (0.15g as alumina, 0.25% to the base material), (in the process of adding aluminum chloride aqueous solution, ensure that the pH is greater than 2, if the system pH value is less than 2, use sodium hydroxide to neutralize the control pH value, if the pH value in this process is greater than 2, then no need to control); then adjust the pH value of the system to 3.0, add 2mL triethoxyoctylsilane (accounting for about 3.4% of the weight of the substrate), at 78 ° C Stir for 0.5h; when the pH value of the system is 3.0, add 20g of color paste containing 40% manganese violet (about 8g of manganese violet, which is about 13.3% of the weight of the substrate), and stir for 0.5h at 78; At 3.0, add 1.0g MOA-9p (acc...

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Abstract

The invention relates to a preparation method for a manganese violet coated pigment. The method comprises the following steps: (1) depositing an adsorbent precursor on a substrate under the condition of system pH being 2-10, wherein the dosage (based on the volume of the generated adsorbent) thereof is 0.1-10% of the weight of the substrate; (2) adding a silane coupling agent under the condition of system pH being 2-10, wherein the dosage is 0-5% of the weight of the substrate; (3) adding Zeta potential regulating agent under the condition of system pH being 2-10, wherein the dosage is 0-10% of the weight of the substrate; (4) adding manganese purple pulp under the condition of system pH being 2-4, wherein the dosage (based on manganese violet pigment) is 0.1-10% of the weight of the substrate; (5) adding Zeta potential regulating agent under the condition of system pH being 2-4, wherein the dosage is 0-10% of the weight of the substrate; (6) adding a silane coupling agent under the condition of system pH being 2-4, wherein the dosage is 0-5% of the weight of the substrate; and (7) filtering, washing and drying, thereby acquiring the manganese violet coated pigment, wherein the step (3) and the step (5) meet the requirement that the dosage of the Zeta potential regulating agent is not equal to 0 at the same time. The free of the color paste of the pigment prepared according to the method cannot occur easily.

Description

technical field [0001] The invention relates to a preparation method of a pigment, in particular to a preparation method of coated manganese violet pigment. Background technique [0002] Manganese violet (Managanese violet), also known as Pigment Violet 16, is a purple powder with low tinting and hiding power, pH value between 2.4 and 4.2, and non-toxic. The 10% pigment water slurry is slightly purple, and is widely used in the cosmetic industry, such as making eye shadows and lipsticks. However, because manganese violet is easy to agglomerate and flocculate when used alone, it is inconvenient to add it to the formula. However, for the simultaneous use of manganese violet and other pigments, it will also cause floating color and sedimentation due to differences in specific gravity, etc., and various additives need to be added for adjustment. However, if the manganese violet powder is effectively coated on the surface of the substrate, it will have more excellent performanc...

Claims

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Application Information

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IPC IPC(8): C09C1/28C09C1/40C09C1/42C09C1/36C09C3/06C09C3/08C09C3/12C09D11/037C09D7/12A61K8/25A61K8/26A61K8/29A61Q3/02
CPCA61K8/25A61K8/26A61K8/29A61Q3/02C09C1/0015C09C1/0021C09C1/3054C09C1/3063C09C1/3081C09C1/309C09C1/3661C09C1/3669C09C1/3684C09C1/3692C09C1/405C09C1/42C09C3/006C09C3/063C09C3/08C09C3/12C09D11/037
Inventor 林一中王振兴
Owner 林一中
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