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Method for producing polyester sizing agent

A technology of polyester pulp and production method, which is applied in the field of pulp manufacturing, can solve the problems of insufficient adhesion, easy skinning, and insufficient adhesion of polyester fibers, so as to improve the moisture absorption rate, thermal stability performance, and softness performance. Good, adhesion-increasing effect

Inactive Publication Date: 2011-08-24
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sizing effect of the three major sizing materials on T / C blended fabrics containing a high proportion of polyester is not satisfactory
PVA has insufficient adhesion to polyester fibers, is prone to skinning and has environmental protection problems; polyacrylate sizing is easy to restick when heated, and has insufficient adhesion to polyester and other highly hydrophobic fibers; modified starch sizing can only be used for Cotton fibers have better adhesion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Install the reaction device: take the four-necked flask and fix it on the constant speed stirrer, add a stainless steel stirring rotor in the four-necked flask, and three of the four-necked flasks are respectively connected to a nitrogen device, a fractionation device, and a thermometer;

[0021] (2) Esterification and transesterification: Take 10 parts of ethylene terephthalate BHET, 1 part of isophthalic acid-5-sodium sulfonate SIPA, 1.3 parts of diethylene glycol DEG and catalyst zinc acetate ZnAc 2 Add 0.2 parts to the four-necked flask in turn, close the other port, first pass nitrogen gas, and then heat until the temperature reaches 140°C. At this time, turn on the constant-speed stirrer, control the speed at 70-80r / min, and stir for 3 minutes to mix the materials evenly; Continue to heat up to 200-230°C, react for 3-4 hours; stop the reaction, and cool the reaction product to 200°C;

[0022] (3) Polycondensation reaction: Add 0.2 parts of stabilizer tripheny...

Embodiment 2

[0027] (1) Install the reaction device: take the four-necked flask and fix it on the constant speed stirrer, add a stainless steel stirring rotor in the four-necked flask, and three of the four-necked flasks are respectively connected to a nitrogen device, a fractionation device, and a thermometer;

[0028] (2) Esterification and transesterification: Take 10 parts of ethylene terephthalate BHET, 1.2 parts of isophthalic acid-5-sodium sulfonate SIPA, 1.5 parts of diethylene glycol DEG and catalyst zinc acetate ZnAc 2 Add 0.2 parts to the four-necked flask one by one, close the other port, first pass nitrogen gas, and then heat until the temperature reaches 160°C. At this time, turn on the constant speed stirrer, control the speed at 70-80r / min, and stir for 3-5 minutes to mix the materials. Uniform; continue to heat up to 200-230°C, react for 3-4 hours; stop the reaction, and cool the reaction product to 180°C;

[0029] (3) Polycondensation reaction: Add 0.1 part of stabilize...

Embodiment 3

[0033] (1) Install the reaction device: take the four-necked flask and fix it on the constant speed stirrer, add a stainless steel stirring rotor in the four-necked flask, and three of the four-necked flasks are respectively connected to a nitrogen device, a fractionation device, and a thermometer;

[0034] (2) Esterification and transesterification: Take 10 parts of ethylene terephthalate BHET, 1.5 parts of isophthalic acid-5-sodium sulfonate SIPA, 1.8 parts of diethylene glycol DEG and catalyst zinc acetate ZnAc 2 Add 0.3 parts to the four-necked flask one by one, close the other port, first pass nitrogen gas, and then heat until the temperature reaches 160°C. At this time, turn on the constant speed stirrer, control the speed at 70-80r / min, and stir for 3-5 minutes to mix the materials. Uniform; continue to heat up to 200-230°C, react for 4h; stop the reaction, and cool the reaction product to 180-200°C;

[0035] (3) polycondensation reaction: add catalyst antimony trioxi...

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Abstract

The invention discloses a method for producing polyester sizing agent, which belongs to the technical field of sizing agent manufacturing. The method produces the novel polyester sizing agent according to a principle of esterification, ester exchange reaction and polycondensation. The production process comprises two steps: firstly, mixing bishydroxy ethylene (BHET), 5-sulfoisophthalic acid (SIPA) monosodium salt and diethylene glycol(DEG), which serve as reaction materials, and zinc acetate (ZnAc2), which serves as a catalyst, according to a certain ratio, heating, stirring and reacting; and secondly, cooling the reaction product, transferring the reaction product to a reaction kettle containing triphenyl phosphate (TPP) serving as a stabilizer and antimonous oxide (Sb2O3) serving as a catalyst, continuing to heat and react, and cooling to obtain the novel polyester sizing agent. The polyester sizing agent produced by the method has an obviously improved adhesive force for yeans, the water solubility of the sizing agent and the softness of the sizing film are higher, the moisture rate and thermal stability of the polyester sizing agent are improved, and the breaking strength, elongation at break, wear resistance, buckling resistance and the like of the sizing film are improved obviously.

Description

technical field [0001] The invention discloses a production method of polyester slurry, specifically a method for producing polyester slurry by adopting the principles of esterification reaction, transesterification reaction and polycondensation reaction, and belongs to the technical field of slurry manufacturing. Background technique [0002] At present, textile size has developed into three pillars of modified starch, polyvinyl alcohol PVA, and acrylic size, but their shortcomings are also obvious. The sizing effects of the three major sizing materials on T / C blended fabrics containing a high proportion of polyester are not ideal. PVA has insufficient adhesion to polyester fibers, is prone to skinning and has environmental protection problems; polyacrylate sizing is easy to restick when heated, and has insufficient adhesion to polyester and other highly hydrophobic fibers; modified starch sizing can only be used for Cotton fibers have better adhesion. [0003] In order t...

Claims

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Application Information

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IPC IPC(8): C08G63/688C08K5/526D06M15/507
Inventor 葛明桥余天石张旋
Owner JIANGNAN UNIV
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