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Preparation method of easy-to-disperse pigment

A technology that is easy to disperse and pigment, applied in the field of organic pigments, can solve problems such as difficult dispersion, uneven color, poor compatibility, etc., and achieve the effects of promoting dispersion, simple preparation method, and low production cost

Pending Publication Date: 2022-04-29
江西隆源化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] With the improvement of the quality of industrial products, in order to pursue high tinting strength and high transparency of products, it is necessary to grind inorganic dyes into ultrafine particles (the particle diameter is generally between 0.01 micron and 0.05 micron) during production, but inorganic dyes The compatibility with organic materials is poor. At the same time, due to the high surface energy of ultra-fine particle inorganic dyes, they are very prone to aggregation, which makes it difficult to disperse. When applied to products, they appear as products. The color is uneven, so a method for preparing easily dispersible pigments is proposed

Method used

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  • Preparation method of easy-to-disperse pigment
  • Preparation method of easy-to-disperse pigment
  • Preparation method of easy-to-disperse pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a kind of organic pigment masterbatch that is easy to disperse, and its preparation steps are as follows:

[0027] S1: Add 30L of 1% sodium hydroxide solution to a 50L sealed dispersion tank with stirring and temperature control functions, and turn on the stirring and temperature control to control the temperature of the sodium hydroxide solution to 50°C. Then drop into the 1-decyl phosphoric acid of 1665g in the airtight dispersing tank, stir and react 20 minutes under the situation of heat preservation, obtain reaction solution A;

[0028] S2: Use ethyl acetate to extract the reaction solution A three times to obtain the extract, distill the extract to remove the ethyl acetate to obtain 1805g of reactant B, the distillation adopts a vacuum distillation process, the distillation temperature is 70°C, and the distillation pressure 10KPa;

[0029] S3: Put 1.8kg of reactant B, 15kg of polyethylene resin particles and 42kg of Y101 iron oxide red po...

Embodiment 2

[0032] This embodiment provides a kind of machine pigment masterbatch that is easy to disperse, and its preparation steps are as follows:

[0033] S1: Add 30L of 1% sodium hydroxide solution to a 50L sealed dispersion tank with stirring and temperature control functions, and turn on the stirring and temperature control to control the temperature of the sodium hydroxide solution to 50°C. Then drop into the 1250g 1,12-dodecane diphosphoric acid in the airtight dispersing kettle, stir and react for 20 minutes under the situation of heat preservation, obtain reaction solution A;

[0034] S2: Use ethyl acetate to extract the reaction solution A three times to obtain the extract, distill the extract to remove the ethyl acetate to obtain 1503g of reactant B, the distillation adopts a vacuum distillation process, the distillation temperature is 70°C, and the distillation pressure 10KPa;

[0035] S3: Put 0.9kg of reactant B, 15kg of polyethylene resin particles and 42kg of Y101 iron o...

Embodiment 3

[0038] On the basis of embodiment two, change the sodium hydroxide solution that drops in the S1 step into 40L, drop into 1500g of 1,12-dodecanebisphosphoric acid in the airtight dispersion kettle, obtain the reactant B of 1704g in the S2 step , while adding 1.7kg of the reactant B in the S3 step, the rest of the components remain unchanged, and finally obtain 51kg of the finished iron oxide red pigment masterbatch in the S4 step.

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Abstract

The invention discloses a preparation method of an easily dispersible pigment, and relates to the technical field of organic pigments. The preparation method comprises the following steps: S1, adding a sodium hydroxide solution into a closed container with stirring and temperature control functions, starting stirring and temperature control, controlling the temperature of the sodium hydroxide solution to be 40-60 DEG C, adding organic phosphoric acid into the closed container, and stirring and reacting for 10-30 minutes under the condition of heat preservation to obtain a reaction solution A; s2, extracting the reaction liquid A for three times by using ethyl acetate to obtain extract liquor, and distilling the extract liquor to remove the ethyl acetate to obtain a reactant B; the high-molecular resin particles and the inorganic dye are forcibly mixed through a high-speed stirring process, so that the inorganic dye in the prepared master batch is uniformly dispersed, and meanwhile, the prepared master batch is relatively large in particle and extremely low in surface energy; therefore, the aggregation phenomenon caused by relatively small inorganic dye particles and relatively high surface energy in the use process is avoided, and the dispersion of the inorganic dye can be promoted.

Description

technical field [0001] The invention relates to the technical field of organic pigments, in particular to a method for preparing easily dispersible pigments. Background technique [0002] Pigments can be divided into inorganic dyes and organic pigments. Inorganic dyes refer to oxides of non-ferrous metals, or some metal insoluble metal salts, mainly including various metal oxides, chromates, carbonates, sulfates and sulfides. Inorganic dyes have strong weather resistance and light resistance. Inorganic dyes will darken and darken the color through the action of sunlight and the atmosphere without fading. Similarly, other pigments will change the chemical composition of the pigment through the action of sunlight and the atmosphere, and fade due to structural damage. Since inorganic dyes have good color fastness, they are widely used in the fields of coatings, inks, plastics and rubbers. [0003] With the improvement of the quality of industrial products, in order to pursue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/10C09C3/08C09C3/04C09C1/24
CPCC09C3/10C09C3/08C09C3/006C09C3/045C09C1/24
Inventor 黄鹏陈权弟朱小吒余江洋傅彬何江龙杨容何文武张坤武
Owner 江西隆源化工股份有限公司