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Color masterbatch and preparation method thereof

A color masterbatch and formulation technology, applied in the direction of adding pigments to the spinning liquid, can solve the problems of poor high temperature resistance, uneven dispersion, colored powder spots, etc.

Inactive Publication Date: 2012-09-19
上海彩艳实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the existing masterbatches are: poor high temperature resistance, uneven dispersion, and toner spots;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of color masterbatch of the present invention, it comprises following technological process:

[0024] Mixing-blanking-melt mixing-cooling-cutting-air-drying-packaging.

[0025] The melt compounding is melt-extruded through a twin-screw mixing extruder, the screw speed is 300RPM-320RPM, the compounding time is 500 seconds-800 seconds, and the compounding temperature is 15°C-50°C.

[0026] The cooling method is water cooling, and the cooling temperature is 30°C-80°C.

[0027] The water content of the color masterbatch is 0.1%-0.5% (wt), the color difference is 4-5 grades, the melting point is 100°C-170°C, the heat resistance is 200°C-300°C, and the filterability (DF value) is 0.3 bar·cm 2 / g-1bar cm 2 / g.

Embodiment 1

[0029] In the present embodiment, thermoplastic resin 60%, additive 10% and pigment 30%; Described thermoplastic resin is low-density polyethylene, and described additive comprises rutile titanium dioxide, and described pigment comprises (pigment yellow 83, pigment red 48: 2. Pigment red 214).

[0030] During the preparation, the following technological process is adopted: material mixing-blanking-melt mixing-cooling-cutting-air-drying-packing.

[0031] The melt compounding is melt-extruded through a twin-screw mixing extruder, the screw speed is 300 RPM, the compounding time is 500 seconds, and the compounding temperature is 30°C.

[0032] The cooling method is water cooling, and the cooling temperature is 35°C.

[0033] The water content of the color masterbatch is 0.2% (wt), the color difference is 4-5 grades, the melting point is 110°C, the heat resistance is 200°C, and the filterability (DF value) is 0.3bar·cm 2 / g.

Embodiment 2

[0035] In the present embodiment, thermoplastic resin 70%, additive 5% and pigment 25%; Described thermoplastic resin is high-density polyethylene, and described additive comprises rutile titanium dioxide, and described pigment comprises (pigment green 7, pigment yellow 183) .

[0036] During the preparation, the following technological process is adopted: material mixing-blanking-melt mixing-cooling-cutting-air-drying-packaging.

[0037] The melt compounding is melt-extruded through a twin-screw mixing extruder, the screw speed is 300 RPM, the compounding time is 500 seconds, and the compounding temperature is 30°C.

[0038] The cooling method is water cooling, and the cooling temperature is 35°C.

[0039] The water content of the color masterbatch is 0.15% (wt), the color difference is 4-5 grades, the melting point is 120°C, the heat resistance is 280°C, and the filterability (DF value) is 0.5bar·cm 2 / g.

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Abstract

An object of the invention is to disclose a color masterbatch and a preparation method thereof. The color masterbatch comprises the following components of, by weight, 60%-70% of a thermoplastic resin, 5%-10% of an additive and 25%-30% of a pigment. The color masterbatch prepared by the above components has the characteristics of good temperature resistance, excellent dispersion property and high dimension stability of products, is widely applied for coloring plastic caps and other injection products, and realizes the object of the invention.

Description

technical field [0001] The invention relates to a color masterbatch and a preparation method thereof, in particular to a color masterbatch used in the coloring of plastic bottle caps and a preparation method thereof. Background technique [0002] The color masterbatch is a plastic colorant that is well dispersed with a high proportion of pigments or additives and thermoplastic resins. The selected resin has good wetting and dispersing effects on the colorant, and has a good compatibility with the material to be colored. Capacitance. That is: pigment + carrier + additive = masterbatch. [0003] The existing color masterbatch technology generally adopts the wet process. The color masterbatch is made by water phase grinding, phase inversion, water washing, drying, and granulation. Only in this way can the product quality be guaranteed. In addition, while the pigment is being ground, a series of color masterbatch technical tests should be carried out, such as measuring the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L23/12C08L23/14C08K3/22B29C47/92D01F1/04B29C48/92
Inventor 霍春雄梁仕启李梅友
Owner 上海彩艳实业有限公司
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