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Production method of normal-pressure cation dyeable copolyester endless tow, chopped fiber and top wool

A production method and copolyester spinning technology, which is applied in the production of cationic dyeable copolyester filament bundles at normal pressure, short fibers and wool tops, can solve the problems of inability to dye at normal pressure and high dyeing temperature, and achieve optimization The preparation method, raw material components are simple, and the effect of operation is feasible

Active Publication Date: 2012-05-02
JIANGSU JIANGNAN HIGH POLYMER FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the dyeing performance of the above-mentioned cationic dyeable copolyester is greatly improved, the dyeing temperature still needs to be above 100°C, and normal pressure dyeing cannot be carried out.
CN200810093836.5 discloses a copolyester polymer that can be dyed with cationic dyes under atmospheric pressure. It is modified by copolymerization of SIPE and dibasic fatty acid. Due to the limitation of the preparation method, although the obtained copolyester polymer spun fiber Can be dyed under atmospheric pressure, but the dyeing temperature is still as high as 95°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]Put 3000kg of PTA, 50kg of IPA, 1369kg of EG, 0.09kg of cobalt acetate, 0.6kg of antimony trioxide and 0.36kg of trimethyl phosphate into the first esterification kettle, carry out esterification reaction at 250°C, and dehydrate 650L Finally, introduce the second esterification tank and lower the temperature to 240°C. After stirring evenly, add 253kg of EG and stir for 5 minutes. After the solution is mixed evenly, add 750L of SIPE solution, react at 240°C for 90min, and collect about 500kg of EG. The reaction mixture is introduced into the polycondensation kettle, and 150kg of adipic acid is quantitatively added to the polycondensation kettle, and the temperature is raised. When the temperature reaches 250°C, vacuuming is started, and the polycondensation reaction is carried out at a temperature below 60Pa for 150min. The temperature is controlled at 250°C-285°C. material, pelletized to obtain copolyester chip 1.

Embodiment 2

[0046] Put 3000kg of PTA, 50kg of IPA, 1369kg of EG, 0.15kg of cobalt acetate, 0.75kg of antimony trioxide and 0.36kg of trimethyl phosphate into the first esterification kettle, carry out esterification reaction at 250°C, and dehydrate 650L Afterwards, introduce the second esterification tank and lower the temperature to 240°C, add 167kg of EG, stir for 10min, mix the solution evenly, add 560L of SIPE solution, react at 240°C for 90min, and collect a total of 400kg of EG. The reaction mixture is introduced into the polycondensation kettle, and 160kg of adipic acid is quantitatively added to the polycondensation kettle, and the temperature is raised. When the temperature reaches 250°C, vacuuming is started, and the polycondensation reaction is carried out at a temperature below 60Pa for 120min. The temperature is controlled at 250°C-285°C. material, pelletized to obtain copolyester chip 2.

Embodiment 3

[0048] Put 2000kg of PTA, 25kg of IPA, 1002kg of EG, 0.1kg of cobalt acetate, 0.5kg of antimony trioxide and 0.24kg of trimethyl phosphate into the first esterification kettle, carry out esterification reaction at 250°C, and dehydrate 432L Afterwards, introduce the second esterification tank and lower the temperature to 240°C, add 253kg of EG, stir for 10min, mix the solution evenly, add 1000L of SIPE solution, react at 240°C for 90min, and collect 600kg of EG in total. The reaction mixture is introduced into the polycondensation kettle, and 170kg of succinic acid is quantitatively added to the polycondensation kettle, and the temperature is raised. When the temperature reaches 250°C, vacuuming is started, and the polycondensation reaction is carried out at a temperature below 60Pa for 180min. The temperature is controlled at 250°C-285°C. material, pelletized to obtain copolyester chip 3.

[0049] The physical indexes of copolyester chips 1-3 are shown in Table 1.

[0050] Ta...

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Abstract

The invention relates to a production method of normal-pressure cation dyeable copolyester endless tow, chopped fiber and top wool. The normal-pressure cation dyeable copolyester endless tow is obtained by spinning normal-pressure cation dyeable copolyesters. A preparation method of the normal-pressure cation dyeable copolyesters comprises the following steps of: (1) carrying out an esterification reaction on ethylene glycol, terephthalic acid and m-phthalic acid; (2) adding ethylene glycol, mixing, adding an SIPE (5-Sodium Sulfonate Isophthalate Ethyl-ester) solution and carrying out an ester exchange reaction; and (3) adding a mixture obtained in the ester exchange reaction into binary fatty acid, mixing uniformly, and carrying out a condensation polymerization reaction to obtain the normal-pressure cation dyeable copolyesters, wherein the molar ratio of the terephthalic acid to the m-phthalic acid is 50:1-90:1; the ratio of the mole number of the ethylene glycol added in the step (2) to the total mole number of the terephthalic acid and the m-phthalic acid is 0.1:1-0.5:1; and the ratio of the total mole number of the terephthalic acid, the m-phthalic acid and the binary fatty acid to the total mole number of sulfonic acid groups in the SIPE solution is 9:1-28:1.

Description

[0001] This application is a divisional application of the patent application titled "Preparation Method of Atmospheric Pressure Cationic Dyeable Copolyester" filed on May 13, 2009. The application number of the original application is 200910027928.8. technical field [0002] The invention relates to a production method of normal-pressure cationic dyeable copolyester filament bundles, short fibers and wool tops. Background technique [0003] Polyester fiber is a kind of common chemical fiber fabric fiber. Ordinary polyester is difficult to dye because of its regular molecular chain and no coloring group. It needs to be modified by adding a third monomer. The prepared cationic Dyed copolyester. The third monomer is dihydroxyethyl isophthalate-5-sodium sulfonate (hereinafter referred to as SIPE), which is transesterified by dimethyl isophthalate-5-sodium sulfonate (hereinafter referred to as SIPM) and ethylene glycol. Obtain, because transesterification is the equilibrium rev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/84C08G63/688D01D5/088D01D5/12
Inventor 浦金龙陶冶沈建兴吴洪磊
Owner JIANGSU JIANGNAN HIGH POLYMER FIBER
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