Method for dyeing polyester fiber type material by using oligomer removing agent

[0029] 1) Weigh 200g of diethyl adipate, 450g of ethylene glycol, 200g of terephthalic acid, 500g of polyoxyethylene sorbitan monolaurate, and 150g of dimethyl isophthalate-5-sodium sulfonate 150g of polypropylene glycol polyethylene glycol block copolymer with a weight average molecular weight of 2000, and 2g of zinc acetate.

[0030] 2) Put the above-mentioned materials into the reaction kettle, heat up to 140° C. for 190 minutes while stirring under nitrogen environment, remove the alcohol by-product of the transesterification reaction, continue to heat up to carry out polycondensation reaction, the reaction temperature is 220° C. for 70 minutes, and then The reaction was continued for 120 minutes at a vacuum degree of -0.08 MP and a temperature of 240° C. to obtain an oligomer remover.

[0032] 1) Weigh 100g of diethyl adipate, 500g of ethylene glycol, 260g of terephthalic acid, 800g of polyoxyethylene sorbitan monolaurate, and 100g of dimethyl isophthalate-5-sodium sulfonate 100g of polypropylene glycol polyethylene glycol block copolymer with a weight average molecular weight of 2000 and 2g of zinc acetate.

[0033] 2) Put the above-mentioned materials into the reaction kettle, heat up to 140° C. for 190 minutes while stirring under nitrogen environment, remove the alcohol by-product of the transesterification reaction, continue to heat up to carry out polycondensation reaction, the reaction temperature is 220° C. for 70 minutes, and then The reaction was continued for 120 minutes at a vacuum degree of -0.08 MP and a temperature of 240° C. to obtain an oligomer remover.

[0035] 1) Weigh 150g of diethyl adipate, 300g of ethylene glycol, 260g of terephthalic acid, 400g of polyoxyethylene sorbitan monolaurate, and 200g of dimethyl isophthalate-5-sodium sulfonate , weight-average molecular weight is 2000 polypropylene glycol polyethylene glycol block copolymer 300g, zinc acetate 2g.

[0036] Put the above materials into the reaction kettle, heat up to 140°C for 190 minutes while stirring in a nitrogen environment, remove the alcohol by-products of the transesterification reaction, continue to heat up for polycondensation reaction, the reaction temperature is 220°C for 70 minutes, and then The temperature was -0.08MP, and the reaction was continued for 120 minutes at a temperature of 240° C. to obtain an oligomer removing agent.