Green lyocell fabric prepared by dyeing in vegetable dye rosemary and preparation method of green lyocell fabric
A plant dye, rosemary technology, applied in the field of green lyocell fabric and its preparation, to achieve simplified dyeing process, high color fastness to soaping and dry rubbing, and reduce environmental pollution
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[0038] Example 1
[0039] The preparation method of the green Lyocell fabric that dyeing of plant dye rosemary makes, described preparation method comprises the steps:
[0040] (1) Preparation of green plant dye stock solution and toner precipitate: take 50g washed leaves of rosemary, mash it and dissolve it in a mixed solution of ethanol-water containing 35% ethanol, the ratio of solid to liquid is 1:15; heat at 55°C for 7 hours, after heating, cool the extract and filter; heat the filtrate at 97°C for 4 hours, remove the ethanol solvent, and filter to prepare green plant dye stock solutions and green toner precipitates, set aside.
[0041] (2) Chemical modification: In 40mL aqueous solution, add 15mL green plant dye stock solution prepared in step (1), 1g green toner precipitate, 4mL 5wt% formaldehyde aqueous solution and 0.2g 1-amino-2-sulfate B Base sulfone ethane, use 30wt% NaOH lye to adjust the pH of the reaction solution to 10.7, stir continuously, the reaction time ...
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[0048] Example 2
[0049] The preparation method of the green Lyocell fabric that dyeing of plant dye rosemary makes, described preparation method comprises the steps:
[0050] (1) Preparation of green plant dye stock solution and toner precipitate: take 50g washed leaves of rosemary, mash it and dissolve it in a mixed solution of ethanol-water containing 30% ethanol, the ratio of solid to liquid is 1:10; heat at 55°C for 7 hours, after heating, cool the extract and filter; heat the filtrate at 97°C for 4 hours, remove the ethanol solvent, and filter to prepare green plant dye stock solutions and green toner precipitates, set aside.
[0051] (2) Chemical modification: In 30mL aqueous solution, add 10mL green plant dye stock solution prepared in step (1), 1g green toner precipitate, 3mL 5wt% formaldehyde aqueous solution and 0.1g 1-amino-2-sulfate B Base sulfone ethane, use 30wt% NaOH lye to adjust the pH of the reaction solution to 10.8, stir continuously, the reaction time ...
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[0058] Example 3
[0059] The preparation method of the green Lyocell fabric that dyeing of plant dye rosemary makes, described preparation method comprises the steps:
[0060] (1) Preparation of green plant dye stock solution and toner precipitate: take 50g washed leaves of rosemary, mash it and dissolve it in a mixed solution of ethanol-water containing 40% ethanol, the ratio of solid to liquid is 1:20; heat at 55°C for 7 hours, after heating, cool the extract and filter; heat the filtrate at 97°C for 4 hours, remove the ethanol solvent, and filter to prepare green plant dye stock solutions and green toner precipitates, set aside.
[0061] (2) Chemical modification: In 50mL aqueous solution, add 20mL green plant dye stock solution prepared in step (1), 1g green toner precipitate, 5mL 5wt% formaldehyde aqueous solution and 0.3g 1-amino-2-sulfate B Base sulfone ethane, use 30wt% NaOH lye to adjust the pH of the reaction solution to 10.5, stir continuously, the reaction time ...
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