A kind of method of continuous heat-melt dyeing of polyester
A continuous, hot-melt technology, which is applied in the dyeing process and the field of continuous hot-melt dyeing of polyester, can solve problems such as poor color brightness, viscosity-reducing effect of dispersant MF, low dye transfer rate, and poor color fastness.
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[0062] Preparation of prepolymer
[0063]Mix 13.5g of butyl acrylate, 4.0g of styrene, 5.5g of propylene glycol block polyether L-64, 2.2g of isomeric tridecyl alcohol polyoxyethylene ether (8) and 64.8g of water, and fully stir to form an emulsion; The mass fraction is 1.0g of ammonium persulfate dissolved in 9.0g of water at room temperature, and fully stirred to form an initiator solution; take half of the mass of the emulsion and half of the mass of the initiator solution and add them to the reaction device of the three-mouth sesame cake, stir while heating, and heat up to 75°C. When the temperature reaches 75°C, slowly add the remaining emulsion and the initiator solution dropwise under stirring state, and the dropping time is 100min. After the dropwise addition was completed, the stirring was continued for 110 min to obtain prepolymer A1.
[0064] Mix 15.0g of butyl acrylate, 6.0g of styrene, 7.5g of propylene glycol block polyether L-64, 4.5g of isomeric tridecyl alco...
Embodiment 1
[0075] First mix 3.0g liquid disperse dye A, 0.5g prepolymer A1, 0.3g prepolymer B1, 0.3g prepolymer C1, 0.2g H90 synthetic thickener, 0.05g penetrant JFC and 95.65g water, stir well , to prepare a staining solution. Then the polyester fabric is dipped with the dyeing solution, two dips and two pads, the padding rate is 80%, and the padding temperature is room temperature. The padded polyester fabric is dried and cured on a heat setting machine, the curing temperature is 185° C., and the curing time is 90 seconds. Finally, the polyester fabric was washed in a washing machine at a temperature of 60° C. and a washing time of 10 minutes; after the washing was completed, it was dried on a drying device to obtain polyester dyed products.
Embodiment 2
[0077] Mix 3.0g liquid disperse dye C, 1.0g prepolymer A2, 0.5g prepolymer B2, 0.5g prepolymer C2, 0.4g PTF-A synthetic thickener, 0.2g penetrant JFC and 94.40g water, stir Homogenously, a staining solution is prepared. Then pad the polyester fabric with the dyeing solution, two dips and two pads, the liquid padding rate is 85%, and the padding temperature is room temperature. The padded polyester fabric is dried and cured on a heat setting machine, the curing temperature is 195° C., and the curing time is 50 seconds. Finally, the polyester fabric was washed in a washing machine at a temperature of 60° C. and a washing time of 10 minutes; after the washing was completed, it was dried on a drying device to obtain polyester dyed products.
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