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Method for preparing polyester integrated finishing agent for terylene from raw material reclaimed from polyester waste material

A technology for recycling polyester and finishing agents, applied in fiber treatment, fiber types, textiles and papermaking, etc., can solve problems such as poor washability, and achieve the effect of improving washability, durable hand feel, and improving washability.

Inactive Publication Date: 2011-11-09
WUXI YICHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is just to overcome the above disadvantages, and provides a method for preparing polyester multifunctional finishing agent for polyester, which increases the molecular weight of the product without affecting the water solubility, and greatly improves the washing resistance of the finished fabric , fundamentally solves the problem of poor washability of common hydrophilic finishing agents, reaches the level of similar products even if its usage is reduced, and has excellent durability, and the method uses recycled polyester waste as raw material, Low cost, economical and environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Embodiment 1, take recycled polyester waste as raw material to prepare the method for polyester multifunctional finishing agent for polyester, the steps are:

[0010] Add recycled polyester waste into the reaction kettle to melt, add dimethyl terephthalate to react for 20-40min at a constant temperature of 200-210°C, add polyethylene glycol and polyether, the polyether has a molecular weight of 1500-3000g / mol of polyoxyethylene ether and polyoxypropylene ether composition with equal weight ratio, react for 5-10min, put into catalyst tripolyphosphoric acid to react for 10-30min, vacuumize, heat and reflux at 0.03-0.05MPa, at 180-190℃ Carry out the esterification reaction for 5-15 minutes, cool to 150°C, add sulfuric acid for sulfonation for 10-30 minutes, then raise the temperature to 210-230°C, then vacuumize, carry out polycondensation reaction at 0.03-0.05MPa, and cool down after 10-30 minutes. After the temperature is lower than 150°C, activated carbon is added for ...

Embodiment 2

[0012] Embodiment 2, steps refer to Example 1, the weight ratio of recycling polyester waste, dimethyl terephthalate, polyethylene glycol and polyether in the process is 1: 1: 1: 1, the addition of catalyst tripolyphosphoric acid The amount is 2% of the total weight of the reaction raw materials, and the addition of sulfuric acid is 0.5% of the total weight of the reaction raw materials.

Embodiment 3

[0013] Embodiment 3, steps refer to Example 1, the weight ratio of recycling polyester waste, dimethyl terephthalate, polyethylene glycol and polyether in the process is 1.3: 1: 1: 1, the addition of catalyst tripolyphosphoric acid The amount is 1% of the total weight of the reaction raw materials, and the addition of sulfuric acid is 0.2% of the total weight of the reaction raw materials.

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Abstract

A method for preparing a multifunctional polyester finishing agent for terylene which takes the recycled polyester wastes as raw material belongs to the technical field of finishing agent for terylene. The recycled polyester wastes are used as the raw material to prepare the multifunctional polyester finishing agent for terylene which is provided with an anion / nonionic amphiphilic block copolymersimilar to a polyester molecular chain block by hydrolyzing, polymerizing and one bath method of sulfonating. In the technique composing process, the materials which are not beneficial to the environment protection like formaldehyde, heavy metals and organic solvents are not contained; the production process and the final products are harmless to the environment; the dacron finished by the finishing agent has the advantages of durable hand feeling, hydrophilicity, antistatic performance and easy-decontamination.

Description

technical field [0001] The invention belongs to the technical field of finishing agents for polyester, in particular to a method for preparing polyester multifunctional finishing agents for polyester by using recycled polyester waste as raw materials. Background technique [0002] In recent years, my country's synthetic fiber industry has developed greatly, and polyester fiber (chemical name: polyethylene terephthalate) occupies a very important position in it. At present, my country's polyester production is about 100,000 tons or more, but in the polyester production process, waste will be generated at each production stage. The amount of waste accounts for more than 10% of the total amount of polyester per year. In this way, the polyester waste produced by my country's light textile industry is about 10,000 tons per year. In addition, polyester film waste and waste polyester bottles also occupy a considerable amount. If these wastes are discarded casually, it will not on...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/00C08G63/181D06M101/32D06M15/507
Inventor 黄小军杨朝忠周介明
Owner WUXI YICHENG CHEM
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