Method for producing polyester microfibre and plolyester microfibre

A technology of polyester microfiber and polyester, which is applied in the field of polyester microfiber, can solve the problems of polyester fiber performance deterioration, spinnability reduction, and affecting fiber performance, and achieve uniform physical properties and high half-tensile strength and tenacity, effect of high Uster yarn percentage

Inactive Publication Date: 2003-01-29
HYOSUNG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem with the method of adding flame-retardant materials during spinning is that the performance of the fibers is seriously affected due to the reduced spinnability
The problem with phosphorus-based flame retardants is: since the phosphorus molecules of the flame retardant are coupled with the main chain of the polymer and are easily hydrolyzed, the performance of polyester fibers deteriorates after post-treatment of polyester fibers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Through a spinneret having a hole diameter of 0.18 mm and a hole length of 0.54 mm, polyester having an intrinsic viscosity of 0.63 was melt-spun at a spinning speed of 2,800 m / min at 297°C while controlling the throughput so that the final composition consisting of 192 filaments was achieved. The final drawn yarn had a monofilament fineness of 0.2 denier. At this time, the temperature of the quench air was adjusted to 20°C, and the length of the hot zone under the spinneret was adjusted to 5 mm. In addition, the maximum distance between the quench air diffusing surface and the melting wire was adjusted to 30 mm. The polyester thus spun was stretched at a draw ratio of 1.521 to provide polyester microfibers. The drawn yarns were tested for processability, dyeability and percent Uster yarn, and the results are summarized in Table 1 below along with their t(x) and S values.

Embodiment 2

[0046] The process of Example 2 was carried out in the same manner as in Example 1 above, except that the monofilament fineness of the final drawn yarn was adjusted to 0.3 denier, the length of the hot zone was adjusted to 20 mm, and the quench air diffusing surface was adjusted to The maximum distance between molten filaments is up to 20mm. The results are summarized in Table 1 below.

Embodiment 3

[0071] To the reactor were added terephthalic acid, ethylene glycol, antimony trioxide as a catalyst, and 5 mol% of 9,10-dihydro-9-oxa-10 having the structure of formula (I) as a flame retardant -(2,3-dicarboxypropyl)-10-phosphaphenathrene-10-oxide, in formula (I) p is 1, and R 1 and R 2are all hydrogen and then esterified by conventional methods. At this time, the catalyst was used in an amount of 400 ppm based on the polymer. After the theoretical amount was flowed out of the reactor, 11 ppm and 15 ppm of manganese acetate and phosphoric acid were added based on the amount of manganese atoms and phosphorus atoms, respectively, to provide UV-stabilizer manganese phosphate, to which 0.4 wt% titanium dioxide passivator was added. Polycondensation is then carried out by conventional methods. Next, polyester microfibers were produced in the same manner as in Example 2 above, except that the polyester obtained from the above was used, and the spinning temperature was adjusted t...

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Abstract

The invention relates to a method for producing polyester microfiber and the polyester microfiber therefor. The invention relates to a new method for producing 70 with fineness of 0.1-0.5 denier or microfiber composed by more monofilament, including melting spin polyester, regulating length of hot area to 20 mm or less when melting filature, and regulating distance between diffusing surface of quenching air and melting filature to 2-30 mm. The advantages of the invention is easy to obtain polyester microfiber with good percent of oust, machinability, coloring property and physics performance.

Description

technical field [0001] The present invention relates to a method for producing polyester microfibers and the polyester microfibers produced thereby. More specifically, the present invention relates to a new method for producing polyester microfibers consisting of 70 or more monofilaments having a fineness of 0.1 to 0.5 denier, wherein the hot zone ( hot zone) length and the distance between the filaments and the quench air diffusing surface, and the polyester microfibers produced therefrom have good processability, physical properties and dyeability. Background technique [0002] Recently, various materials producing high added value are being developed in the polyester fiber industry. For this purpose, the production of polyester microfibers with a monofilament fineness of 1.0 denier has been popularized. In addition, special attention has been paid to polyester microfibers having a monofilament fineness of 0.5 denier or finer, and related companies are promoting the deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01F1/02D01F6/62
Inventor 孙亮国金范锡金应秀
Owner HYOSUNG CORP
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