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Method for preparing polyester fiber having compound functions of pilling resistance, ageing resistance and normal-pressure cationic dyeability

A composite function, polyester fiber technology, applied in the direction of fiber chemical characteristics, single-component polyester rayon, rayon manufacturing, etc., to achieve the effect of good anti-pilling performance

Inactive Publication Date: 2012-05-02
WUJIANG GANGYANG CHEM FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there is no relevant report about the polyester fiber with anti-pilling, anti-aging, normal pressure cationic dyeable composite functions and its preparation method.

Method used

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  • Method for preparing polyester fiber having compound functions of pilling resistance, ageing resistance and normal-pressure cationic dyeability
  • Method for preparing polyester fiber having compound functions of pilling resistance, ageing resistance and normal-pressure cationic dyeability

Examples

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Embodiment 1

[0031] This embodiment provides a method for preparing an anti-pilling, anti-aging, normal-pressure cationic dyeable polyester chip, which includes the following steps:

[0032] (1) One-time esterification reaction process: Take 18kg of purified terephthalic acid (PTA) and 7.05kg of ethylene glycol (EG), add 70 liters of polyester experimental equipment, stir evenly, start to heat up and pressurize to 0.3Mpa , carry out esterification, the esterification temperature is controlled at 255 ~ 260 ° C, until the esterification water is completed, return to normal pressure, and end the reaction.

[0033] (2) Transesterification reaction process: After the primary esterification is completed, add ethylene glycol to cool down and depolymerize, control the temperature at 220-245°C for 0.4-1.0 hours, then add 1400g of three-monomer solution, stir evenly, and heat up to At 255°C, the transesterification reaction is carried out, so that the unreacted SIPM can complete the transester...

Embodiment 2

[0037] This embodiment provides a method for preparing an anti-pilling, anti-aging, normal-pressure cationic dyeable polyester chip, which includes the following steps:

[0038] (1) One-time esterification reaction process: take 18kg of purified terephthalic acid (PTA), 7.05kg of ethylene glycol (EG), add 70 liters of polyester experimental equipment, stir evenly, start to heat up and pressurize to 0.3Mpa , carry out esterification, the esterification temperature is controlled at 255-260 °C, until the esterification water is completed, return to normal pressure, and end the reaction.

[0039] (2) Transesterification reaction process: After the primary esterification is completed, add ethylene glycol to cool down and depolymerize, control the temperature at 220-245°C for 0.4-1.0 hours, then add 1400g of three-monomer solution, stir evenly, and heat up to At 255°C, the transesterification reaction is carried out, so that the unreacted SIPM can complete the transesterificat...

Embodiment 3

[0043] This embodiment provides a method for preparing an anti-pilling, anti-aging, normal-pressure cationic dyeable polyester chip, which includes the following steps:

[0044] (1) One-time esterification reaction process: take 18kg of purified terephthalic acid (PTA), 7.05kg of ethylene glycol (EG), add 70 liters of polyester experimental equipment, stir evenly, start to heat up and pressurize to 0.3Mpa , carry out esterification, the esterification temperature is controlled at 255-260 °C, until the esterification water is completed, return to normal pressure, and end the reaction.

[0045] (2) Transesterification reaction process: After the primary esterification is completed, add ethylene glycol to cool down and depolymerize, control the temperature at 220-245°C for 0.4-1.0 hours, then add 1400g of three-monomer solution, stir evenly, and heat up to At 255°C, the transesterification reaction is carried out, so that the unreacted SIPM can complete the transesterificat...

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Abstract

The invention relates to a method for preparing a polyester fiber having compound functions of pilling resistance, ageing resistance and normal-pressure cationic dyeability, comprising a primary esterification reaction step, an ester exchange reaction step, a secondary esterification reaction step and a polymerization reaction step, wherein three monomers are added in the ester exchange reaction step; a hindered amine light stabilizer and a hindered phenol antioxidant as well as hydroxyl silicone oil are added after the secondary esterification reaction and a pre-polymerization reaction; and pre-crystallization and drying are performed on polyester slices before a spinning step. Fabrics made of the polyester fibers of the invention are good in pilling resistance and good in light fastness, and can be dyed into various beautiful colors by means of the normal-pressure cationic dyeability of the fibers, thereby meeting the uniform requirements of the present high-grade spring-summer dresses for functionality and colors; the obtained polyester fibers also can be subjected to apposition dyeing with wool; and as being blended with wool, good dressing effect can be obtained. The polyester fiber of the invention is an important supplement for the cationic dyeable polyester market at present in China.

Description

technical field [0001] The present invention relates to a preparation method of polyester fiber, in particular to a preparation method of polyester fiber with anti-pilling, anti-aging, normal-pressure cationic dyeable composite functions. Background technique [0002] In recent years, with the rapid development of domestic polymerization technology, my country's functional polyester synthesis technology has made great progress. Domestic cationic dyeable polyester has formed a scale of nearly 400,000 tons, and its differentiated varieties emerge in endlessly. There is a momentum of booming production and sales, but we should also see that there is a considerable gap between my country's cationic polyester synthesis technology and application range and developed countries. The main application fields of my country's cationic dyeable polyester fibers are decorative fabrics and fabrics. Garment moldings, which have a great distance from the original intention of the developmen...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/10C08G63/688
Inventor 边树昌
Owner WUJIANG GANGYANG CHEM FIBER
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