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Technology for preparing natural dye by means of plant flower pedals

A technology of plant petals and natural dyes, applied in the field of printing and dyeing, can solve the problems affecting the land, water sources and atmosphere in surrounding areas, the impact of synthetic dyes on the prospect, and the withdrawal from the historical stage, etc., to achieve the effects of shortening the preparation time, low cost, and reducing waste of raw materials

Inactive Publication Date: 2015-12-16
ZHANGJIAGANG TIANLONG KITTING GARMENTS WEAVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once handled improperly, it will directly affect the land, water and atmosphere in the surrounding area, thus causing poisonous
It can be seen that the prospect of synthetic dyes will be seriously affected, and even withdraw from the stage of history

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A process for preparing natural dyes from plant petals comprises the following steps.

[0028] 1) One-step drying: Expose the petals of wisteria, morning glory, rose, rose or peony to the sun for 4 hours or dry them in high temperature fluidization at 50°C for 30 minutes to obtain dried petals.

[0029] 2) One-step crushing: crush the dried petals into petal powder.

[0030] 3) Mixing: Mix the alcohol solution with a concentration of 30% and the crushed petals in a ratio of 1:4 by mass, then pour into a blender and stir for 5 minutes to obtain a cloudy solution.

[0031] 4) Extraction: Heat the turbid solution to 40°C and extract it at 20r / min for 0.5h to obtain the extract.

[0032] 5) Filtration: Ultrafiltration of the extract to remove impurities to obtain filtrate and filter residue.

[0033] 6) Distillation: Distill the filtrate at 75°C to obtain a paste mixture.

[0034] 7) Two-step drying: Put the paste mixture into a freeze dryer and dry it at -40°C to obtain...

Embodiment 2

[0037] A process for preparing natural dyes from plant petals comprises the following steps.

[0038] 1) One-step drying: Expose the petals of wisteria, morning glory, rose, rose or peony to the sun for 8 hours or dry them in high temperature fluidization at 70°C for 60 minutes to obtain dried petals.

[0039] 2) One-step crushing: crush the dried petals into petal powder.

[0040] 3) Mixing: Mix the alcohol solution with a concentration of 50% and the crushed petals in a ratio of 1:6 by mass, then pour it into a blender and stir for 10 minutes to obtain a cloudy solution.

[0041] 4) Extraction: Heat the turbid solution to 60°C and extract at a speed of 40r / min for 1.5h to obtain an extract.

[0042] 5) Filtration: Ultrafiltration of the extract to remove impurities to obtain filtrate and filter residue.

[0043] 6) Distillation: Distill the filtrate at 85°C to obtain a paste mixture.

[0044] 7) Two-step drying: put the paste mixture into a freeze dryer, and dry it at -50...

Embodiment 3

[0047] A process for preparing natural dyes from plant petals comprises the following steps.

[0048] 1) One-step drying: Expose the petals of wisteria, morning glory, rose, rose or peony to the sun for 6 hours or dry them in high temperature fluidization at 60°C for 45 minutes to obtain dried petals.

[0049] 2) One-step crushing: crush the dried petals into petal powder.

[0050] 3) Mixing: Mix the alcohol solution with a concentration of 40% and the crushed petals at a ratio of 1:5 by mass, then pour into a blender and stir for 7.5 minutes to obtain a cloudy solution.

[0051] 4) Extraction: Heat the turbid solution to 50°C and extract at a speed of 30r / min for 1 hour to obtain an extract.

[0052] 5) Filtration: Ultrafiltration of the extract to remove impurities to obtain filtrate and filter residue.

[0053] 6) Distillation: Distill the filtrate at 80°C to obtain a paste mixture.

[0054] 7) Two-step drying: Put the paste mixture into a freeze dryer and dry it at -45°...

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Abstract

The invention discloses a technology for preparing natural dye by means of plant flower pedals. The technology for preparing the natural dye by means of the plant flower pedals is characterized by comprising the following steps of one-step drying, one-step smashing, mixing, extracting, filtering, distilling and two-step drying. The technology for preparing the natural dye by means of the plant flower pedals has the advantages that the raw materials and solvent used in the technology do not contain hazardous substances and can not cause pollution to the environment, the solvent can be reused through recycling, and the requirements of safe and green production are met. By means of smashing for two times, plant cells can be destroyed to the maximum extent, pigment compositions in the cells can be dissolved rapidly to obtain extract liquor with high concentration, the extraction rate is greatly increased, and raw material waste is reduced. The raw materials needed by preparing the dye adopt the plant flower pedals which are common and single and rich in color, the plant flower pedals can be obtained through large-area planting or by purchasing from growers, the sources are wide, and the situation that production can not be conducted due to lack of the raw materials can be avoided.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing, and in particular relates to a process for preparing natural dyes from plant petals. Background technique [0002] In the textile printing and dyeing industry, dyes are one of the important raw materials, and their quality and dyeing process will directly affect the coloring effect of finished fabrics. The purchase of dyes has also become a larger expenditure in the printing and dyeing process. Synthetic dyes are widely used in the printing and dyeing industry because of their advantages of various colors. However, since synthetic dyes are prepared through a series of processes using chemical raw materials, they inevitably contain a certain amount of harmful substances. The finished fabrics printed and dyed with synthetic dyes may produce harmful substances in certain environments, such as heavy metal ions or other harmful organic substances, which will cause different degrees of ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
Inventor 钱科
Owner ZHANGJIAGANG TIANLONG KITTING GARMENTS WEAVING
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