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Polymer type organic pigment and method for producing the same

A technology of organic pigments and polymers, applied in the field of pigments, can solve problems such as pollution, secondary environmental pollution, and increase production costs, and achieve the effect of simple synthesis process, low cost, and easy degradation

Active Publication Date: 2008-07-16
HANGZHOU HONGYAN PIGMENT CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this pigment is made by reacting in organic solvent, and organic solvent can produce volatile organic compound (VOC), causes pollution; The dye is a general organic dye, which will cause secondary environmental pollution; the precipitant used contains organic solvents, which increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of red pigment: Weigh 2g of polyvinyl alcohol, heat to boil and dissolve in 100ml of water, add 2g of reactive scarlet B-EF, then add 1g of anhydrous sodium carbonate, react at 90°C for 2 hours, a red polymer is formed. The polymer was centrifuged (3000r / min), washed with water, filtered and dried to obtain a red bulky product. This product is dispersed and ground to obtain the product.

Embodiment 2

[0017] Preparation of black pigment: Weigh 6g of soluble starch, dissolve it in 50ml of water by heating, add 3g of reactive black BED dye, 3g of sodium sulfate, react at 85°C for 1 hour, then add 2g of sodium sulfate, react for 1.5 hours, black granular polymer generate. Wash the polymer with water, centrifuge (3000r / min), filter off the solution, and dry to obtain a small block product. This product is dispersed and ground to obtain the product.

Embodiment 3

[0019] Preparation of blue pigment: Weigh 6g of carboxymethyl cellulose, dissolve it in 50ml of water by heating, add 3g of active dark blue KM-GR, 5g of sodium carbonate, 2g of sodium sulfate, react at 90°C for 2 hours and 15 minutes, and there are blue granules Matter is generated. The polymer was washed with water, centrifuged (3000r / min), the solution was filtered off, the solvent was rotary evaporated, and dried to obtain a small block product. Disperse and grind this product to obtain the product.

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PUM

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Abstract

The invention provides a preparation method of polymer type organic pigment, which dissolves water soluble high molecular material in water, then reactive dye is added to react with a catalyst under certain temperature, the polymer type organic pigment is obtained after reaction product is centrifugated, filtered, washed and dried. The polymer type organic pigment has no harm to human bodies and no pollution to environment and is easily degradable in natural environment. No organic solvent or harmful substance is used and no volatile organic compound is generated during the production technique process of the pigment. The synthesizing technique of the invention is simple without any special technique equipment and has low cost. The pigment of the invention has good tinctorial strength, color and brightness, thereby being used for fields of printing ink, coating material, paint and so on.

Description

technical field [0001] The invention relates to a pigment, in particular to a polymer organic pigment and a preparation method thereof. Background technique [0002] Pigments are widely used in various fields such as coatings, paints, and inks, and have a great impact on people's lives. Traditional pigments are divided into inorganic pigments and organic pigments. Many inorganic pigments contain heavy metals, which are harmful to the human body; organic pigments generally pollute the production environment due to the use of organic solvents in the production process, and cause certain harm to the health of workers; existing inorganic and organic pigments are generally in the natural environment. It is difficult to degrade by itself in the environment, and it is easy to cause secondary pollution. [0003] Chinese patent application number is ZL200310112156.0 discloses a kind of preparation method of polymer type white organic pigment, and this method is to use styrene, acry...

Claims

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Application Information

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IPC IPC(8): C09B69/10
Inventor 宋胜梅卫艳丽赵晓红鞠东董川
Owner HANGZHOU HONGYAN PIGMENT CHEM