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Polyester fibers having deformed section

A technology of polyester fiber and special-shaped section is applied in the field of polyester fiber with special-shaped section, which can solve the problems of insufficient effect and insufficient improvement effect.

Inactive Publication Date: 2006-04-19
TEJIN FIBERS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods can improve the melting heat stability of polyester to a certain extent, but its effect of improving is not enough, and need to improve the tone of obtained polyester polymer in addition
[0008] In addition, it is also proposed to use a complex compound of a titanium compound and a phosphorus compound as a catalyst for the preparation of polyester (for example, referring to Japanese Patent Laid-Open No. 7-138354 communique), although using this method can improve the thermal stability of melting to a certain extent, However, the effect is not sufficient, and the color tone of the obtained polyester needs to be improved

Method used

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  • Polyester fibers having deformed section
  • Polyester fibers having deformed section
  • Polyester fibers having deformed section

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0256] Preparation of titanium compounds:

[0257] Prepare a 2L three-necked flask with a device capable of mixing and stirring the contents, put 919g of ethylene glycol and 10g of acetic acid into it, mix and stir, slowly add 71g of tetrabutoxytitanium to the mixture, and prepare the ethylene glycol of titanium compound solution (clear). This solution is hereinafter referred to as "TB solution". The titanium atomic concentration of this solution was 1.02%.

[0258] Preparation of phosphorus compounds:

[0259] A 2 L three-necked flask equipped with a device capable of heating, mixing and stirring the contents was prepared, 656 g of ethylene glycol was charged thereinto, and heated to 100° C. while stirring. When the above temperature was reached, 34.5 g of monolauryl phosphate was added, heated, mixed and stirred, and dissolved to form a transparent solution. Hereinafter, this solution is referred to as "P1 solution".

[0260] Catalyst preparation:

[0261] Next, ...

Embodiment 2-3、 comparative example 1

[0268] Replace the spinneret and replace the spinneret hole with one that can form figure 1 Except for the shape of (b)-(f) and the cross-sectional shape of a single fiber with a circular cross-section, it was carried out in the same manner as in Example 1. The results are shown in Table 1.

Embodiment 4

[0275] Mix 0.009 parts of tetra-n-butyl titanate (TBT) into a mixture of 100 parts of dimethyl terephthalate and 70 parts of ethylene glycol, and put the mixture into a stainless steel container capable of pressurized reaction, while pressurizing To 0.07MPa, and from 140 ℃ to 240 ℃, while carrying out the transesterification reaction, then add 0.035 parts of triethyl phosphonoacetate (TEPA) to terminate the transesterification reaction.

[0276] Afterwards, the reaction product was transferred into a polymerization container, the temperature was raised to 290° C., and the polycondensation reaction was carried out under a high vacuum below 26.67 Pa to obtain polyethylene terephthalate. At this time, titanium dioxide was added as a matting agent during the reaction to make it 2.5% by weight relative to the total weight of the polyester. The polyethylene terephthalate had an intrinsic viscosity of 0.62 and a diethylene glycol content of 1.5%. The obtained polyethylene terephthal...

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Abstract

Polyester fibers having a deformed section are produced from a polyester polymer which is obtained by polycondensing an aromatic dicarboxylate ester in the presence of a catalyst containing a mixture of a Ti component (A) comprising at least one a titanium alkoxide or a reaction product thereof with a specific carboxylic acid or its anhydride with a P compound component (B) represented by the following general formula (III) and / or a reaction product of a Ti compound component (C) with a P compound component (D) represented by the following general formula (IV).

Description

technical field [0001] The present invention relates to special-shaped section polyester fiber. More specifically, the present invention relates to shaped cross-section polyester fibers using polyester polymers having good color tone and excellent formability. Background technique [0002] Polyester polymers, especially polyethylene terephthalate, polyethylene naphthalate, polytrimethylene terephthalate and polybutylene terephthalate have excellent mechanical, physical, Chemical properties, so it is widely used in the field of fibers, films and other molded parts. [0003] Said polyester polymers, such as polyethylene terephthalate, can generally be prepared by preparing ethylene glycol esters of terephthalic acid and / or oligomers thereof, followed by dehydration in the presence of a polymerization catalyst. Press and heat to make it react to a predetermined degree of polymerization. Other polyesters can also be produced by the same method as above. [0004] It is genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62C08G63/87C08G63/85C08G63/181C08K5/51D01D5/253
CPCD01D5/253C08K5/51C08G63/181C08G63/85D01F6/62Y10T428/2973Y10T428/2975Y10T428/2976Y10T428/2978
Inventor 益田刚神山三枝水村知雄宫坂信义塚本亮二服部启次郎中岛卓菊池胜志逢坂浩幸
Owner TEJIN FIBERS LTD
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