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Dark color dyeing technology of grey hair

A process, a technology for dark hair, applied in the field of dark color dyeing technology for dark hair, which can solve the problems of difficulty in dyeing dark colors, environmental hazards, and high dyeing costs

Inactive Publication Date: 2009-03-25
HENAN REBECCA HAIR PRODS TNC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When gray hair is used as the raw material of wigs, it is difficult to dye dark colors. The dye fastness of dyes that can be dyed into dark colors cannot meet the requirements, and dyes with good fastness cannot dye gray hair into dark colors.
At present, some use oxidation dyes, which cause certain harm to the environment, and the dyeing costs are high and the operation process is complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 1 # dyeing process

[0011] 1. Pretreatment. Choose 100kg of gray hair that has been stripped of scales, add 1.5T of soft water, heat up to 60°C, stir constantly, discharge the waste liquid after 15 minutes, and then wash it three times with clear water.

[0012] 2. Dyeing. Put the pre-treated gray hair into the dyeing tank, add 1.5T of soft water, accurately weigh 800g of acid orange, 750g of acid yellow, 50g of acid red and 2Kg of reactive black, dissolve them, add them to the dyeing tank, stir evenly, and then add 4kg of anhydrous Na 2 SO 4 , the heating rate is 2°C / min, at 60°C, 80°C, and 100°C, add 1000mL of glacial acetic acid with a concentration of 98% respectively, keep it warm for 90-120 minutes, and discharge the waste liquid.

[0013] 3. Post-processing. Add 1.5T soft water and 2500mL ammonia water to the dyed gray hair, raise the temperature to 65°C, keep stirring, drain the liquid after 15 minutes of treatment, then add 1.5T soft water and 500gNa 2 S...

Embodiment 2

[0015] 1B dyeing process

[0016] 1. Pretreatment. Choose 100kg of gray hair that has been stripped of scales, add 1.5T of soft water, heat up to 60°C, stir constantly, discharge the waste liquid after 15 minutes, and then wash it three times with clear water.

[0017] 2. Dyeing. Put the pre-treated gray hair into the dyeing tank, add 1.5T of soft water, accurately weigh 900g of acid orange, 800g of acid yellow, 50g of acid red and 1.3Kg of reactive black, dissolve them, add them to the dyeing tank, stir evenly, and then add 3kg of anhydrous Na 2 SO 4 , the heating rate is 2°C / min, at 60°C, 80°C, and 100°C, add 1000mL of glacial acetic acid with a concentration of 98% respectively, keep it warm for 90-120 minutes, and discharge the waste liquid.

[0018] 3. Post-processing. Add 1.5T soft water and 2500mL ammonia water to the dyed gray hair, raise the temperature to 65°C, keep stirring, drain the liquid after 15 minutes of treatment, then add 1.5T soft water and 500gNa 2 ...

Embodiment 3

[0020] 4 # dyeing process

[0021] 1. Pretreatment. Choose 100kg of gray hair that has been stripped of scales, add 1.5T of soft water, heat up to 60°C, stir continuously for 15 minutes, then discharge the waste liquid, and then wash it three times with clear water.

[0022] 2. Dyeing. Put the pre-treated gray hair into the dyeing tank, add 1.5T of soft water, accurately weigh 900g of acid orange, 800g of acid yellow and 600g of reactive black, dissolve them, add them to the dyeing tank, stir evenly, and then add 3kg of anhydrous Na 2 SO 4 , heating rate 2°C / min, at 60°C, 80°C, and 100°C, 1000ml of glacial acetic acid with a concentration of 98% was added on average respectively, kept warm for 3 hours, and the waste liquid was discharged.

[0023] 3. Post-processing. Add 1.5T soft water and 2500mL ammonia water to the dyed gray hair, raise the temperature to 65°C, keep stirring for 15 minutes, drain the liquid, then add 1.5T soft water and 500gNa 2 S 2 o 4 , heat up to...

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Abstract

The invention provides a deep colour dyeing technology for grey hair in the wig industry. The technology comprises the following steps: cleaning the grey hair with soft water, then according to the weight part of the grey hair, adding 10-15 parts of soft water in a dyeing bath, 0.015-0.02 part of one or the combination of the acid dyes of the acid orange, curcumin, acid red and the like, 0.006-0.02 part of reactive dye, 0.02-0.05 part of sodium sulphate (anhydrous Na2SO4) and 0.02-0.04 part of glacial acetic acid with the concentration of 98%, the glacial acetic acid is added into the dyeing bath averagely by three times when the water temperature is 60 plus / minus 2 DEG C, 80 plus / minus 2 DEG C and when the water is boiling, the heating rate is 1-2 DEG C / min, and keeping for 90-120 minutes at 95-100 DEG C to fix color on the grey hair, discharge the wastewater and then adding proper amount of soft water and 0.025 part of ammonia NH4OH, and heating up to 60 plus / minus 5 DEG C, treating for 10-15 minutes and discharging the liquid, then re-adding soft water and vat powder (Na2S2O4) and heating up to 70 plus / minus 5 DEG C, then treating for 10-15 minutes and discharging the liquid, and then cleaning for three times with the soft water of 50 plus / minus 5 DEG C. The color fastness of the grey hair deep dyeing technology is good, the production cost is low and the operation technology is simplified.

Description

technical field [0001] The invention relates to a primary hair dyeing process in the hair product industry, and is particularly related to the dark color dyeing process of gray hair. Background technique [0002] The raw materials used in the hair products industry are mainly human hair. With the continuous expansion of the scale of the hair products industry, there is a relative shortage of human hair raw materials. When gray hair is used as a wig raw material, it is more difficult to dye dark colors. The dye fastness of dyes that can be dyed into dark colors cannot meet the requirements, and the dyes with good fastness cannot dye gray hair into dark colors. At present, some use oxidation dyes, which cause certain harm to the environment, and the dyeing costs are high and the operation process is complicated. Innovating the dark color dyeing process of Cangfa has become the key to the production of wigs with common color numbers as wig raw materials and to alleviate the sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/39D06P1/38D06P3/00A41G3/00
Inventor 郑有全
Owner HENAN REBECCA HAIR PRODS TNC
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