Preparation method of normal pressure cation dyeable copolyester

A technology of cationic and copolyester, which is applied in the field of preparation of normal pressure cationic dyeable copolyester, which can solve the problems of unable to carry out normal pressure dyeing and high dyeing temperature, and achieve optimized preparation method, simple raw material components and less broken ends Effect

Active Publication Date: 2009-10-07
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 cationi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1

[0041] The PTA of 3000kg, the IPA of 50kg, the EG of 1369kg, cobalt acetate 0.09kg, antimony trioxide 0.6kg and trimethyl phosphate 0.36kg are dropped into the first esterification kettle, at 250 ℃, carry out esterification reaction, dehydration 650L After that, it was introduced into the second esterification kettle and cooled to 240°C. After stirring, 253 kg of EG was added, and stirred for 5 minutes. After the solution was mixed evenly, 750 L of SIPE solution was added, and the reaction was carried out at 240°C for 90 minutes, and a total of about 500 kg of EG was collected. The reaction mixture was introduced into the polycondensation kettle, and 150 kg of adipic acid was quantitatively added to the polycondensation kettle, and the temperature was increased. When the temperature reached 250 ° C, vacuum was started, and the polycondensation reaction was carried out below 60 Pa for 150 min, and the temperature was controlled at 250 ° C to 285 ° C. The mate...

Example Embodiment

[0042] Example 2

[0043]The PTA of 3000kg, the IPA of 50kg, the EG of 1369kg, cobalt acetate 0.15kg, antimony trioxide 0.75kg and trimethyl phosphate 0.36kg are dropped into the first esterification kettle, at 250 ℃, carry out esterification reaction, dehydration 650L After that, it was introduced into the second esterification kettle and cooled to 240°C, 167kg of EG was added, stirred for 10min, the solution was mixed uniformly, 560L of SIPE solution was added, and the reaction was carried out at 240°C for 90min to collect a total of 400kg of EG. The reaction mixture was introduced into the polycondensation kettle, and 160 kg of adipic acid was quantitatively added to the polycondensation kettle, and the temperature was increased. When the temperature reached 250 °C, vacuuming was started, and the polycondensation reaction was carried out under 60Pa for 120 min, and the temperature was controlled at 250 °C to 285 °C. The material was cut into pellets to obtain copolyester ch...

Example Embodiment

[0044] Example 3

[0045] The PTA of 2000kg, the IPA of 25kg, the EG of 1002kg, cobalt acetate 0.1kg, antimony trioxide 0.5kg and trimethyl phosphate 0.24kg are dropped into the first esterification kettle, at 250 ℃, carry out esterification reaction, dehydration 432L After that, it was introduced into the second esterification kettle and cooled to 240°C, 253kg of EG was added, stirred for 10min, after the solution was mixed uniformly, 1000L of SIPE solution was added, reacted at 240°C for 90min, and a total of 600kg of EG was collected. The reaction mixture was introduced into the polycondensation kettle, and 170 kg of succinic acid was quantitatively added to the polycondensation kettle, and the temperature was increased. When the temperature reached 250 °C, vacuuming was started, and the polycondensation reaction was carried out below 60Pa for 180 min, and the temperature was controlled at 250 °C to 285 °C. The material was cut into pellets to obtain copolyester chips 3.

...

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PUM

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Abstract

The invention relates to a preparation method of normal pressure cation dyeable copolyester, comprising the following steps of: (1) carrying out esterification reaction to glycol, terephthalic acid and m-phthalic acid; (2) adding glycol, mixing uniformly, then adding SIPE solution and carrying out ester exchange reaction; and (3) adding aliphatic dibasic acid into mixture obtained after ester exchange reaction, uniformly mixing, then carrying out polycondensation reaction and preparing normal pressure cation dyeable copolyester, wherein the molar ratio of the terephthalic acid and m-phthalic acid is 50:1 to 90:1, the ratio of mole number of the aliphatic dibasic acid and the sum of the mole numbers of the terephthalic acid and m-phthalic acid is 0.05:1 to 0.15:1; the ratio of the mole number of the added glycol in the step (2) and the sum of the mole numbers of the terephthalic acid and m-phthalic acid is 0.1:1 to 0.5:1; the ratio of the sum of the mole numbers of the terephthalic acid, m-phthalic acid and the aliphatic dibasic acid and the mole number of the sulfonic acid group in SIPE solution is 9:1 to 28:1.

Description

technical field [0001] The invention relates to a preparation method of normal pressure cationic dyeable copolyester. Background technique [0002] 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 reversible reaction, therefore the SIPE solution of gained is actually the mixed solution of SIPE, SIPM and methyl isophthalate hydroxyethyl ester-5-sodium sulfonate, and the total sulfonic acid groups in the solution are used for metering Group molar count. However, although the dyeing performance...

Claims

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Application Information

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IPC IPC(8): C08G63/78C08G63/688C08G63/183
Inventor 浦金龙陶冶沈建兴吴洪磊
Owner JIANGSU JIANGNAN HIGH POLYMER FIBER
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