Preparation method of dope-dyed cotton linter composite filament
A technology of dope dyeing and compound filament, applied in the direction of conjugated rayon, cellulose/protein conjugated rayon, wet spinning, etc. Low problems, to achieve excellent textile performance and wear performance, reduce environmental pressure, avoid dyeing and finishing wastewater effects
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[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0014] Such as figure 1 Shown, the preparation method of the cotton linter composite filament dyed by this stock solution comprises the following steps:
[0015] 1) Preparation of dye stock solution: dissolving the reactive dye in water to prepare a dye stock solution with a reactive dye concentration of 20-40 wt%. The reactive dye can be selected from any one of the prior art according to the required color.
[0016] 2) preparation of spinning solution: the dyestuff stock solution is added in the cotton linter dispersion liquid, and the cotton linter dispersion liquid is carboxymethyl chitosan aqueous solution, the add-on of described dyestuff stock solution is based on the weight of reactive dyestuff It is calculated as 1-3.5wt% of the cotton linters dispersion liquid; after stirring evenly, the temperature is raised to 70° C. to obtain a d...
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