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Glycol-based pigment dispersoid for dacron stock solution coloring and preparation method of dispersoid

A pigment dispersion and stock solution coloring technology, which is applied in dyeing, textile and papermaking, etc., to achieve the effect of high stability, small particle size and narrow particle size distribution range

Active Publication Date: 2014-12-03
SUZHOU SUNMUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned technical defects, the invention provides a kind of ethylene glycol-based pigment dispersion for polyester dope coloring and preparation method thereof, in the transesterification reaction and polycondensation reaction of the polyester preparation process, the pigment dispersion Ethylene glycol as the dispersion medium can directly participate in the polymerization of polyester fibers, so that the colorant can be evenly dispersed in the spinning solution, and the phenomenon that the spinneret is blocked due to the large particle size and easy aggregation of the pigment is reduced

Method used

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  • Glycol-based pigment dispersoid for dacron stock solution coloring and preparation method of dispersoid
  • Glycol-based pigment dispersoid for dacron stock solution coloring and preparation method of dispersoid
  • Glycol-based pigment dispersoid for dacron stock solution coloring and preparation method of dispersoid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Dissolve 40g of wetting agent A and 60g of dispersant C in the supplementary amount of ethylene glycol, add 400g of carbon black to the solution, and emulsify the pre-dispersion on a high-speed emulsifier at a speed of 300-400 rpm for 0.5 hours to obtain a pre-dispersion Liquid, put the pre-dispersed liquid in a sand mill for grinding and dispersing, the grinding time is 1 hour, filter the ground pigment dispersion through a 1000nm microporous membrane to remove coarse particles and impurities in the dispersion, and obtain an average Glycol based carbon black pigment dispersion with a particle size of 160nm.

Embodiment 2

[0042] Dissolve 45g of wetting agent A and 180g of dispersant B in the supplementary amount of ethylene glycol, add 900g of phthalocyanine blue 15:3 pigment, and emulsify and pre-disperse for 2 hours at a speed of 300-400 rpm on a high-speed emulsifier to obtain Pre-dispersion, put the pre-dispersion in a sand mill for grinding and dispersing, the grinding time is 8 hours, filter the ground dispersion through a 1000nm microporous membrane, remove coarse particles and impurities, and obtain the average particle size A 120nm dispersion of ethylene glycol based phthalocyanine blue 15:3 pigment.

Embodiment 3

[0044] Dissolve 60g of wetting agent C and 100g of dispersant B in the supplementary amount of ethylene glycol, add 2000g of titanium dioxide, and emulsify the pre-dispersion on a high-speed emulsifier at a speed of 300-400 rpm for 3 hours to obtain a pre-dispersion. The pre-dispersion is placed in a sand mill for grinding and dispersing. The grinding time is 0.5 hours. The ground dispersion is filtered through a 1000nm microporous membrane to remove coarse particles and impurities to obtain ethylene glycol with an average particle size of 73nm. Alcohol-based titanium dioxide pigment dispersion.

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Abstract

The invention discloses a glycol-based pigment dispersoid for dacron stock solution coloring, and a preparation method of the dispersoid. The glycol-based pigment dispersoid comprises a pigment, a wetting agent, a dispersing agent and glycol, wherein the mass percentage of the pigment accounts for 10-40% of total mass percentage of the glycol-based pigment dispersoid; the mass ratio of the wetting agent to the pigment is (0.03-0.1):1; the mass ratio of the dispersing agent to the pigment is (0.05-0.2):1; and the balance is complemented by glycol. In the presence of the special structures, namely the wetting agent and the dispersing agent, the prepared glycol-based pigment dispersoid has the characteristics of small particle size and narrow particle size distribution range, and has thermostability, temperature stability and higher stability in terephthalic acid and derivatives of terephthalic acid; precipitation, flocculation, and the like do not exist within 12h at 250-280 DEG C; the glycol-based pigment dispersoid serves as a dacron resin colorant and is free from coloring power and brightness reduction and spinning nozzle blocking due to increase of pigment particles in a spinning process; and the glycol-based pigment dispersoid is suitable for the dacron stock solution coloring.

Description

technical field [0001] The invention relates to a pigment dispersion and a preparation method thereof, in particular to an ethylene glycol-based pigment dispersion used for coloring polyester stock solution and a preparation method thereof. Background technique [0002] Dope coloring is a method in which coloring agents are added to the spinning dope of chemical fibers for spinning to directly produce colored chemical fibers. The colored fiber prepared by this technology has small color difference and high light fastness. More importantly, the downstream chemical fiber dyeing link is omitted, which meets the current development requirements for energy saving and emission reduction. It is an important means of dyeing difficult-to-dye chemical fibers with dyeable groups, reducing dyeing pollution, improving color fastness, and reducing costs, and has a good development prospect. [0003] Polyester fiber is a widely used chemical fiber obtained by polycondensation reaction of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/52D06P1/651D06P3/52
Inventor 吕仕铭杜长森付少海梅成国伍金平
Owner SUZHOU SUNMUN TECH CO LTD