Low-content organic volatile low-melting-point polyester fiber and preparation method thereof
A technology of organic volatiles and low-melting polyester, which is applied in the field of polyester fibers, can solve problems such as side reactions, b value increase, and catalyst addition, and achieve the effects of weakening influence, increasing glass transition temperature, and avoiding adhesion
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Embodiment 1
[0043] A kind of preparation method of low content organic volatile matter low melting point polyester fiber, its process is as follows:
[0044] (1) Esterification reaction;
[0045] After preparing terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, calcium sulfonate isophthalate, 1,4-butanediol and zinc oxide into slurry, at a temperature of 190°C and a pressure of Under the nitrogen atmosphere of 0.95KPa, react until the amount of water distilled reaches 90% of the theoretical value; among them, terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, calcium sulfonate isophthalate and 1, The molar ratio of 4-butanediol is 1:0.3:0.8:0.09:0.01:1.0; the mass addition of zinc oxide is the mass addition of phthalic acid (that is, the mass addition of terephthalic acid and isophthalic acid) and 0.01% of ).
[0046] (2) polycondensation reaction;
[0047] Add ethylene glycol antimony and triphenyl phosphate to the system of step (1), react...
Embodiment 2
[0061] A kind of preparation method of low content organic volatile matter low melting point polyester fiber, its process is as follows:
[0062] (1) Esterification reaction;
[0063] After preparing terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, calcium sulfonate isophthalate, 1,4-butanediol and zinc oxide into slurry, at a temperature of 180°C and a pressure of Under the nitrogen atmosphere of 0.95KPa, react until the amount of water distilled reaches 91% of the theoretical value; among them, terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, calcium sulfonate isophthalate and 1, The molar ratio of 4-butanediol is 1:0.4:0.9:0.11:0.02:11; the mass addition of zinc oxide is 0.012% of the mass addition of phthalic acid.
[0064] (2) polycondensation reaction;
[0065] Add ethylene glycol antimony and triphenyl phosphate to the system of step (1), react at a temperature of 260°C and a pressure of 460Pa for 35 minutes, and then re...
Embodiment 3
[0070] A kind of preparation method of low content organic volatile matter low melting point polyester fiber, its process is as follows:
[0071] (1) Esterification reaction;
[0072] After preparing terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, calcium sulfonate isophthalate, 1,4-butanediol and zinc oxide into slurry, at a temperature of 185°C and a pressure of Under the nitrogen atmosphere of 0.98KPa, react until the amount of water distilled reaches 90% of the theoretical value; wherein, terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, calcium sulfonate isophthalate and 1, The molar ratio of 4-butanediol is 1:0.3:0.9:0.10:0.01:1.0; the mass addition of zinc oxide is 0.011% of the mass addition of phthalic acid.
[0073] (2) polycondensation reaction;
[0074] Add ethylene glycol antimony and triphenyl phosphate to the system of step (1), react at a temperature of 263°C and a pressure of 480Pa for 35 minutes, and then reac...
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