Low-temperature scouring and bleaching agent and preparation method thereof and preprocessing technique
A technology of low-temperature scouring and bleaching agent and auxiliary agent, applied in the field of textile printing and dyeing processing, can solve the problems of increasing processing cost, impossibility to realize low-temperature pre-treatment process of cotton, and high dosage
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Embodiment 1
[0084] Embodiment 1: the preparation method of low-temperature scouring and bleaching agent
[0085] (A) preparation of auxiliary agent QR2010
[0086] Compound organic solvent 30%
[0087] Pingpingjia (emulsifier) 1%
[0088] Fatty alcohol polyoxyethylene ether phosphate (scouring agent) 20%
[0089] Water 49%
[0090] a) carbon tetrachloride, octyl acetate and dimethylbenzene are mixed in a mass ratio of 1:0.8:0.2 to prepare an organic solvent mixture;
[0091] b) adding 1% Pingpinga (emulsifier) by weight percentage in the above mixed solution;
[0092] c) After stirring for 10 minutes, add water drop by drop, and obtain a preliminary oil / water emulsion through an emulsifier;
[0093] d) adding 20% scouring agent by weight percentage to the above mixed emulsion;
[0094] e) Stir the emulsion at a high speed at a stirring speed of 1100 rpm for 40 minutes, at the same time raise the temperature of the emulsion to 55°C, and gradually drop the remaining water to form ...
Embodiment 2
[0110] Example 2.32 s Cotton cheese (80℃) scouring and bleaching
[0111] Hydrogen peroxide (27.5%) 6.0ml / L
[0112] QR2010 1.0g / L
[0113] QR2011 2.5g / L
[0114] QR2020 0.5g / L
[0115] Bath ratio 1:15
[0116] Temperature 80°C
[0117] Time 70min
[0118] Washing times 2 times
[0119] Whiteness 80.9%
[0120] Gross effect 14.8cm
[0121] Process flow: Dosing at 40°C, heating up to 80°C, scouring and bleaching for 70 minutes → draining liquid → hot water washing (60°C×15min) draining liquid → cold water washing (including acid neutralization and deoxidation treatment, and then dyeing with dye)
Embodiment 3
[0135] Example 3. Cotton 21 s yarn towel and 32 s (80℃) scouring, bleaching and whitening process of thread towel
[0136] Reference example (old process) Example of low temperature scouring and bleaching (new process)
[0137] Hydrogen peroxide (27.5%) 15.0ml / L 15.0ml / L
[0138] QR2010 / 1.0g / L
[0139] QR2011 / 2.5g / L
[0140] QR2020 / 0.5g / L
[0141] 26°Be'NaOH 10.0ml / L /
[0142] Scouring agent 0.5g / L /
[0143] Oxygen bleach stabilizer 701 4.0g / L /
[0144] Sodium hexametaphosphate 0.5g / L /
[0145] Brightener for cotton 0.36% (o.w.f.) 0.36% (o.w.f.)
[0146] Bath ratio 1:12 1:12
[0147] Temperature 100°C 80°C
[0148] Time 120min (thread towel) 90min (thread towel)
[0149] 140min (gauze towel) 90min (gauze towel)
[0150] Washing times 6 times 2 times
[0151] Whiteness 85% 89%
[0152] Capillary effect 6.0cm 18cm
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