Preparation method of polyamine type efficient desizing agent

A desizing agent and polyamine-type technology, which is applied in the field of preparation of polyamine-type high-efficiency desizing agents, can solve the problems of size coagulation, etc., and achieve the effects of reducing burden, good scale inhibition effect, and preventing re-staining

Active Publication Date: 2020-08-14
HANGZHOU MEIGAO HUAYI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to repeated reuse of recycled water, the concentration of calcium, magnesium and iron ions and electrolytes in the water is also relatively high. The electrolyte will inevitably have a negative impact on the slurry in the working fluid, resulting in slurry aggregation

Method used

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  • Preparation method of polyamine type efficient desizing agent
  • Preparation method of polyamine type efficient desizing agent
  • Preparation method of polyamine type efficient desizing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Add 300 parts of laurylamine dipropylenediamine, 450 parts of allyl polyethylene glycol with a number average molecular weight of 350, and 150 parts of isopropanol into a reaction vessel, heat up to 65°C and keep it warm for 4 hours After that, the temperature was raised to 85°C, the vacuum was turned on, and the temperature was kept at -0.08MPa for 1 hour, and the temperature was lowered to below 50°C to discharge to obtain laurylamine dipropylenediamine polyoxyethylene ether.

[0016] 8 parts of sodium polyaspartate, 20 parts of laurylamine dipropylene diamine polyoxyethylene ether, 2 parts of sodium gluconate, and 70 parts of water to obtain a polyamine type high-efficiency desizing agent.

Embodiment 2

[0017] Example 2: 300 parts of laurylamine dipropylene diamine, 400 parts of allyl polyethylene glycol with a number average molecular weight of 500, and 140 parts of ethanol were added to the reaction vessel, and the temperature was raised to 70°C for 6 hours of heat preservation reaction. Raise the temperature to 80°C, turn on the vacuum, keep the temperature at -0.08MPa for 1.5 hours, cool down to below 50°C, and discharge to obtain laurylamine dipropylenediamine polyoxyethylene ether.

[0018] 6 parts of sodium polyaspartate, 20 parts of laurylamine dipropylenediamine polyoxyethylene ether, 4 parts of sodium gluconate, and 70 parts of water to obtain a polyamine type high-efficiency desizing agent.

Embodiment 3

[0019] Example 3: Add 300 parts of laurylamine dipropylenediamine, 600 parts of allyl polyethylene glycol with a number average molecular weight of 600, and 180 parts of isopropanol into the reaction vessel, heat it up to 70°C and keep it warm for 6 hours. , the temperature was raised to 85°C, the vacuum was turned on, the temperature was kept at -0.09MPa for 1.5 hours, the temperature was lowered to below 50°C, and the material was discharged to obtain laurylamine dipropylenediamine polyoxyethylene ether.

[0020] 6 parts of sodium polyaspartate, 25 parts of laurylamine dipropylene diamine polyoxyethylene ether, 4 parts of sodium gluconate, and 80 parts of water to obtain a polyamine type high-efficiency desizing agent.

[0021] 1. Experimental method:

[0022] (1) Fabric:

[0023] 300T polyester woven fabric, the warp and weft deniers are both 44.4dtex, and the warp and weft densities are 185 threads / 2.54cm and 115 threads / 2.54cm respectively.

[0024] (2) Desizing process...

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PUM

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Abstract

The invention relates to a preparation method of a polyamine type efficient desizing agent. The polyamine type efficient desizing agent is prepared by compounding lauryl amine dipropylenediamine polyoxyethylene ether, sodium polyaspartate and sodium gluconate. Nonionic polyoxyethylene chain segments and a plurality of amino groups capable of being protonated in the components of the desizing agentcan form ionic bond or hydrogen bond combination with polyacrylate slurry, so that the removed slurry is more stably dispersed in water, and the slurry is prevented from being re-stained. The sodiumpolyaspartate and the sodium gluconate which are easy to biodegrade are compounded, so that the desizing agent has extremely high chelating capacity on calcium, magnesium and iron ions in water, and has double effects of corrosion inhibition and scale inhibition, and the product can adapt to different working condition environments and reduce the burden of sewage treatment.

Description

technical field [0001] The invention relates to the field of printing and dyeing auxiliaries, in particular to a preparation method of a polyamine-type high-efficiency desizing agent. Background technique [0002] With the increasing pressure of environmental protection, a large number of low liquor ratio printing and dyeing equipment and continuous pre-treatment equipment have been put into use in printing and dyeing factories. At the same time, in order to reduce wastewater discharge, dyeing factories also use a large amount of recycled water. Low liquor ratio equipment and continuous pretreatment equipment are used for pretreatment, desizing and refining production, and the returned slurry has a relatively high concentration in the working fluid. Due to repeated reuse of recycled water, the concentration of calcium, magnesium and iron ions and electrolytes in the water is also relatively high. The electrolyte will inevitably have a negative impact on the slurry in the wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L1/14C07C213/08C07C217/08C08G65/333
CPCD06L1/14C07C213/08C08G65/33306C07C217/08
Inventor 张生岗陈焜
Owner HANGZHOU MEIGAO HUAYI CHEM
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