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A kind of neutral deinking agent and preparation method thereof

A technology of neutral deinking agent and surfactant, which is applied in the field of neutral deinking agent and its preparation, can solve problems such as ink residue, reduce production cost, overcome low deinking efficiency, and improve deinking efficiency. Effect

Active Publication Date: 2018-02-09
朱勇强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of improved neutral deinking agent and preparation method thereof, overcome the defective that existing neutral deinking agent exists
In order to achieve the above purpose, the present invention adds modified rosin sulfonate to the main ingredient formula of the deinking agent based on the principle of "similar compatibility", thereby greatly improving the deinking efficiency; and proposes a new concept of "cooperative deinking" , organically combine the "dispersion, stability and aggregation" of the ink, and add inorganic salt and mineral soil to the auxiliary formula of the deinking agent, thus solving the ink residue problem of the deinking pulp

Method used

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  • A kind of neutral deinking agent and preparation method thereof
  • A kind of neutral deinking agent and preparation method thereof
  • A kind of neutral deinking agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0030] ① Add 20 parts of water to the reaction kettle, then add 1 part of inorganic mineral soil while stirring, the stirring speed is 100r / min, and the adding time is 10 minutes. After adding, continue stirring for 20 minutes; , add 10 parts of sodium maleic abietate and 1 part of sodium lignosulfonate successively under stirring, and continue stirring for 10 minutes after adding; ③ Add 10 parts of lauryl sulfate, polyoxyethylene alkyl ether 10 parts, 10 parts of fatty acid salt, 1 part of inorganic salt, continue to stir for 15 minutes after adding; ④ Add water to adjust the concentration to 58%, stop stirring, naturally cool to below 40°C, and then pack.

Embodiment 2

[0032] ① Add 25 parts of water to the reaction kettle, then add 2 parts of inorganic mineral soil while stirring, the stirring speed is 150r / min, and the adding time is 10 minutes. After adding, continue stirring for 20 minutes; , add 12 parts of sodium rosin succinate sulfonate and 2 parts of sodium lignosulfonate successively under stirring, and continue stirring for 10 minutes after adding; ③Add 13 parts of lauryl sulfate, polyoxyethylene alkane 13 parts of base ether, 12 parts of fatty acid salt, and 1 part of inorganic salt, and continue to stir for 15 minutes after adding; ④ Add water to adjust the concentration to 59%, stop stirring, naturally cool to below 40°C, and then pack.

Embodiment 3

[0034] ① Add 30 parts of water to the reaction kettle, then add 3 parts of inorganic mineral soil while stirring, the stirring speed is 200r / min, and the adding time is 20 minutes. After adding, continue stirring for 20 minutes; , add 15 parts of rosin amine polyoxyethylene ether and 3 parts of sodium lignosulfonate successively under stirring, and continue stirring for 25 minutes after adding; ③ add 15 parts of dodecyl sulfate, polyoxyethylene alkyl Add 15 parts of ether, 13 parts of fatty acid salt, and 1.5 parts of inorganic salt, and continue to stir for 15 minutes after adding; ④ Add water to adjust the concentration to 60%, stop stirring, naturally cool to below 40°C, and then pack.

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Abstract

The invention relates to a neutral deinking agent and a preparation method thereof. The weight ratio of the components of the neutral deinking agent is: the main agent is 10-20 parts of lauryl sulfate, 10-20 parts of polyoxyethylene alkyl ether, 10-20 parts of rosin-based surfactant and fat 10-15 parts of sodium lignosulfonate, 1-5 parts of sodium lignosulfonate, 1-5 parts of inorganic mineral soil and 1-2 parts of inorganic salt as auxiliary agents. The neutral deinking agent of the invention has the advantages of high deinking efficiency, high whiteness of pulp after deinking, little ink residue, low production cost of the deinking agent and easy biodegradation, etc., and is suitable for deinking various waste papers.

Description

technical field [0001] The invention relates to a neutral deinking agent and a preparation method thereof, which is a production technology of the waste paper deinking agent used in the waste paper recycling and repulping process. Background technique [0002] With the improvement of people's awareness of environmental protection, the utilization of renewable resources will be a long-term solution for future development. As a reusable resource, waste paper has become one of the main raw materials for pulp and papermaking. Compared with primary resources, waste paper recycling can save water by 50%, energy by 65%, air pollution by 70%, COD in sewage by 40%, and solid waste by 70%. [0003] In the recycling process of waste paper, it is very important to use an efficient and environmentally friendly deinking agent to remove ink from paper. Most of the deinking agents currently used are alkaline deinking agents. Chinese patent CN101012344A discloses a MOW deinking agent agent,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D9/04
Inventor 朱勇强
Owner 朱勇强
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