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Flame retardant polyesterpolymer able to dye by using cation pigment,its mfg.method and copolymer fiber using the same

一种阳离子染料、阻燃聚酯的技术，应用在共聚酯纤维领域，能够解决磷含量减少、产生有毒气体、原纱可纺性和物理性能降低等问题

Inactive Publication Date: 2005-11-16
HYOSUNG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method has the disadvantage of poor durability, although it is advantageous in terms of manufacturing cost
The second method includes a blending method using a flame-retardant material (flame retardant) and another blending method using a flame-retardant masterbatch that contains an excessive amount of a flame retardant, but the former has the following problems: the spinnability of the raw yarn And physical properties are reduced, and the latter has the following disadvantages: it is difficult to manufacture a flame retardant masterbatch so that it has the desired physical properties, such as viscosity and color
[0010] The application of bromine-based flame retardants is disclosed in Japanese Patent Publications No. 62-6912, 53-46398 and 51-28894, wherein, because bromine-based compounds are easily thermally decomposed at high temperatures, a large amount of flame retardants must be used Flame retardants are used to obtain desired flame retardancy, and thus, the above-mentioned patents have the following problems: the color of the polymer deteriorates, light resistance decreases, and toxic gas is generated during combustion
However, in the case of using dimethyl terephthalate (hereinafter, referred to as "DMT") as a raw material, there are some problems: comparison of production cost with terephthalic acid (hereinafter, referred to as "TPA") method Higher, and polymers made by this Japanese patent are degraded by UV light
[0013] The method of physically mixing flame-retardant polyester polymers and polyester polymers dyeable with cationic dyes in the spinning process can be used to manufacture flame-retardant fibers dyeable with cationic dyes, but this method has the following disadvantages: due to the method Manufactured copolyester fibers consist of two polymers that are simply mixed with each other, so that the content of phosphorus, which acts as a flame retardant, is reduced, so that the desired flame retardancy cannot be guaranteed; due to the ionic material that provides dyeability through cationic dyes The content of is reduced, so the dyeability by cationic dyes is reduced due to the reduced space to be dyed by cationic dyes
In addition, it is difficult to precisely adjust the content and uniform dispersion of flame retardants and ionic materials, resulting in non-uniform physical properties of raw yarns

Method used

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  • Flame retardant polyesterpolymer able to dye by using cation pigment,its mfg.method and copolymer fiber using the same
  • Flame retardant polyesterpolymer able to dye by using cation pigment,its mfg.method and copolymer fiber using the same
  • Flame retardant polyesterpolymer able to dye by using cation pigment,its mfg.method and copolymer fiber using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] After dissolving DMS (wherein M is sodium) in the EG in the reactor, wherein the reactor is equipped with a methanol discharge unit so that the content of DMS is 60%, sodium hydroxide (NaOH) is added as a transesterification reaction catalyst to the resulting In solution, it was 5 wt% of DMS to initiate the reaction. When the discharged methanol content exceeds 99% of the theoretical value, the heating is stopped and the reactor is cooled to produce DES.

[0065] The slurry was prepared using DES so that the molar ratio of DES and (TPA+DES) was 1.5, while in this case the molar ratio of EG to all acid components (TPA+DES) was 1.15.

[0066]An alkali oligomer having the same composition as the slurry was stirred in an esterification tank at 255°C, and then the slurry was fed into an esterification reaction tank while the internal temperature of the reactor was kept at 255°C. After the feeding of the slurry was completed, the stirring was continued for 30 minutes, and wh...

Embodiment 2

[0070] After dissolving DMS (wherein M is sodium) in the EG in the reactor, wherein the reactor is equipped with a methanol discharge device so that the content of DMS is 60%, sodium hydroxide (NaOH) as a catalyst for the transesterification reaction is added to the resulting In solution, it was 5 wt% of DMS to initiate the reaction. When the discharged methanol content exceeds 99% of the theoretical value, the heating is stopped and the reactor is cooled to produce DES.

[0071] The slurry was prepared using DES so that the molar ratio of DES and (TPA+DES) was 1.2, while in this case the molar ratio of EG to all acid components (TPA+DES) was 1.15.

[0072] An alkali oligomer having the same composition as the slurry was stirred in an esterification reaction tank at 255°C, and then the slurry was fed into the esterification reaction tank while the internal temperature of the reactor was maintained at 255°C. After the feeding of the slurry was completed, the stirring was conti...

Embodiment 3

[0076] A slurry was prepared such that the molar ratio of EG to TPA was 1.15.

[0077] The molar ratio of DES and (TPA+DES) was kept at 1.5, the DE reaction tank was kept at 255° C. while stirring, and then stirring was continued for 30 minutes after the slurry and DES were sequentially fed into the DE reaction tank. The slurry and DES were supplied in such a manner that their amounts were controlled so that the molar ratio of DES and (TPA+DES) was 1.5, and then the reaction was continued for 30 minutes, whereby the degree of reaction was close to 95.2%.

[0078] The resulting product is transferred to the polycondensation tank and will include hydroxyethyl (CH 2 CH 2 OH) as R in chemical formula 1 1 and R 2 The flame retardant is supplied into the polycondensation reaction tank so that the phosphorus atom content contained in the flame retardant is 6100ppm of the polymer, manganese acetate is supplied into the polycondensation reaction tank as a manganese salt so that the ...

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Abstract

Disclosed is a flame-retardant polyester polymer dyeable with a cationic dye, a method of producing the same, a copolyester fiber using the same, and fiber products using the copolyester fiber. In the method, after a dimethyl isophthalate component containing metal sulfonate of Formula 2 separately reacts with ethylene glycol so that an extent of the ester interchange reaction is 95% or more to synthesize bis(hydroxyethyl terephthalate) containing metal sulfonate of Formula 3, bis(hydroxyethyl terephthalate) is fed so that a content of bis(hydroxyethyl terephthalate) is 0.01-5 mol % based on a diacid component in a polymer in a course of producing polyester, a phosphorus-based flame retardant of Formula 1 is fed so that a content of a phosphorus atom is 500-40000 ppm based on the polymer, and the mixture is copolymerized. The polyester polymer is dyeable with cationic dye while having excellent flame retardancy, and can be melt-spun like other polymers capable of being melt-spun. The copolyester fiber using the polyester polymer is capable of being processed according to processes through which conventional polyester fibers are processed, and is dyeable with cationic dye while having excellent flame retardancy.

Description

technical field [0001] The present invention relates to a flame-retardant copolyester polymer dyeable with cationic dyes, its production method, and copolyester fiber using the same. The copolyester polymer includes terephthalic acid (hereinafter, referred to as "TPA") as a raw material, and thus, it has excellent dyeability to cationic dyes under atmospheric pressure while securing polyterephthalic acid. The excellent inherent physical properties of Poly(ethylene terephthalate), hereinafter, referred to as "PET", with increased filling pressure are considered to be the cause of decreased spinnability during spinning, which Similar to the spinning process of traditional polyester, and has excellent flame retardancy. [0002] More specifically, the present invention relates to a process for the manufacture of copolyesters capable of dyeing with cationic dyes at atmospheric pressure, ensuring a slow rate of increase in filling pressure due to the content of impurities, such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/87C08G63/181C08G63/688C08G63/692C08G63/83C08L67/00D01F1/07D01F6/84
CPCC08G63/6926C08G63/6886D01F1/07D01F6/84C08G63/83E02D29/0208E02D2600/20
Inventor 梁承哲金应秀孙亮国权益铉
Owner HYOSUNG CORP
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