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Stripe-shaped aluminum pigment for printing ink and preparation method thereof

A technology of aluminum pigments and strips, which is applied in the field of strip aluminum pigments for inks and its preparation, can solve the problems of potential safety hazards and inconvenient use, and achieve the effects of convenient weighing, low odor and uniform particles

Inactive Publication Date: 2018-10-19
ANHUI CHENGYI METAL NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the latter is powdery, it is easy to float and generate dust during use, which has potential safety hazards and is inconvenient to use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The preparation method of the strip-shaped aluminum pigment for ink includes the following steps:

[0030] (1) According to the formula ratio, the materials are uniformly mixed in a low-speed kneader to obtain a mixture;

[0031] (2) Put the mixture of step (1) into a twin-screw extruder for extrusion molding; adjust the extrusion rate of the twin-screw extruder according to the dry humidity of the ingredients and the particle size of the mixture, preferably 180-250r / min extrusion rate; adjust the extrusion temperature of the twin-screw extruder according to the softening point of the carrier and the solvent content of the ingredients, preferably an extrusion temperature of 35-120°C;

[0032] (3) After the extrusion molding, the solid content of the product is increased to more than 95% by vacuum drying and static baking to obtain the finished strip-shaped aluminum pigment, wherein the baking temperature is 70-150°C.

Embodiment 1

[0034] The raw materials are mixed uniformly in a low-speed kneader according to the ratio of aluminum: aldehyde and ketone resin: additives = 80:12:3, and then put into the twin-screw extruder and stirred. Among them, the aluminum raw material has a solid content of 65% and above, D70 Solvent production, aluminum with a particle size D50 of 13u and below, additives are β-(3,5-di-tert-butyl-4-hydroxyphenyl) stearyl propionate, polyamide waxes, propylene glycol block A mixture of polyester and stearic acid. Set the extrusion rate of the twin screw extruder to 180r / min, the extrusion temperature to 35°C, and the extrusion molding. Finally, a vacuum dryer is used to statically bake at 70°C to increase the solid content of the product to over 95% to obtain the finished product. In addition to poor dispersibility in aliphatic hydrocarbon solvents, the finished product has good dispersibility in most common organic solvents, and has good compatibility in common ink resin systems.

Embodiment 2

[0036] The raw materials are mixed uniformly in a low-speed kneader according to the ratio of aluminum: thermoplastic acrylic resin: additives = 80:10:0.5, and then put into the twin-screw extruder and stirred. Among them, the aluminum raw material has a solid content of 65% and above, D40 Solvent production, aluminum with a particle size D50 of 13u and below, the auxiliary agent is 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, propylene glycol block polyester, A mixture of oleic acid. Set the extrusion rate of the twin-screw extruder to 250r / min, the extrusion temperature to 120°C, and the extrusion molding. Finally, a vacuum dryer is used to statically bake at 150°C to increase the solid content of the product to more than 95% to obtain the finished product. In addition to poor dispersibility in aliphatic hydrocarbon solvents, the finished product has good dispersibility in most common organic solvents, and has good compatibility in common ink resin systems.

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PUM

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Abstract

The invention relates to stripe-shaped aluminum pigment for printing ink and a preparation method thereof and belongs to the field of chemical engineering. The stripe-shaped aluminum pigment is prepared from the following ingredients by weight: 85 parts of aluminum, 15 parts of carrier and 0.5 to 3 parts of aid. A forming technology is mainly achieved through a twin-screw extruder; the solid content of a final product is improved by a vacuum dry static roasting mode after extrusion and formation, so that the aluminum pigment is achieved; the aluminum pigment has very good dispersion in commonorganic solvents of fat removing hydrocarbon solvents and also has very good compatibility in common printing ink resin systems; compared with ordinary silver paste, the aluminum pigment has the advantages of better dispersion, quick dryness and excellent adhesive force.

Description

Technical field [0001] The invention belongs to the field of chemical engineering, and particularly relates to a strip-shaped aluminum pigment for ink and a preparation method thereof. Background technique [0002] In the prior art, most aluminum pigments still exist in the form of 60-70% solid content slurry or 98% solid content powder. Due to the excessive content of high-boiling mineral solvents, the former is restricted to be used in certain industries that require high odor and VOC emissions. Since the latter is powdery, it is easy to cause dust when it is used, which poses safety hazards and is inconvenient to use. In this context, we have developed a strip-shaped aluminum pigment for ink. The product has high aluminum content (≥80%) and low odor (solvent oil content). <5%), easy to use (the product is solid, easy to weigh, no dust), good solubility (you can directly soak and disperse without stirring), and good compatibility with common ink systems. Summary of the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/037
CPCC09D11/037
Inventor 王蓓蓓董前年朱胜利沈治平苑静朱双单
Owner ANHUI CHENGYI METAL NEW MATERIAL
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