Method for exhaust-dyeing wool/cashmere fibers or fabrics by gardenia pigment

A cashmere fiber, gardenia pigment technology, applied in the direction of dyeing method, fiber treatment, animal fiber, etc., can solve the problems of poor color fastness, low dyeing rate, etc., to promote dissolution, improve color fastness, and improve dye utilization rate. Effect

Active Publication Date: 2015-05-27
淄博祥源纺织有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the problems of low dyeing rate and poor color fastness of existing gardenia pigments on wool (cashmere) fibers or fabrics, and provide a kind of gardenia pigments on wool (or cashmere) fibers or fabrics. The above exhaust dyeing method, through the design of a suitable temperature control and low temperature dyeing process, combined with an efficient disulfide bond selective reducing agent and dyes for dyeing in the same bath, the wool (cashmere) scale layer is softened through temperature and auxiliaries, so that Wool (cashmere) fiber achieves the purpose of full diffusion of gardenia pigment into the interior of wool (cashmere) fiber at a lower temperature to obtain level dyeing and penetration dyeing, and realizes the ecological, low-temperature, low-damage exhaustion dyeing process of wool (cashmere) fiber

Method used

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  • Method for exhaust-dyeing wool/cashmere fibers or fabrics by gardenia pigment
  • Method for exhaust-dyeing wool/cashmere fibers or fabrics by gardenia pigment
  • Method for exhaust-dyeing wool/cashmere fibers or fabrics by gardenia pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 : Hair strip gardenia red dyed light color

[0030] (1) Wool pretreatment process

[0031] Treatment conditions: take 0.5% fiber weight sodium carbonate, 0.5% fiber weight sodium bicarbonate, 1% fiber weight coconut oil diethanolamide, dissolve in warm water, add wool to it, temperature 50°C, bath ratio 1:30 , wash for 20 minutes, drain, and dry.

[0032] (2) Dyeing process of gardenia red pigment wool

[0033] Dyeing formula: gardenia red pigment 1% (o.w.f),

[0034] Selective reducing agent 0.5g / L,

[0035] Sodium hexametaphosphate 0.02g / L,

[0036] pH is 4-5,

[0037] Bath ratio 1:20,

[0038] After the fiber obtained in the first step is manufactured, the top is obtained, and the top is dyed: start heating at 25°C, raise the temperature to 50°C at 1°C / min, keep it warm for 10 minutes, then raise the temperature to 85°C at 1.5°C / min, and keep it warm for 30 minutes , drain at a temperature of 2°C / min, and wait for water washing, such as image 3 s...

Embodiment 2

[0045] Example 2 : Scattered gardenia blue pigmented medium color

[0046] (1) Wool pretreatment process

[0047] Treatment conditions: 1% sodium carbonate by fiber weight, 1.5% coconut oil diethanolamide by fiber weight, after dissolving in warm water, add wool loose fiber to it, temperature 40°C, liquor ratio 1:20, wash for 30 minutes and then drain. Shake fibers dry.

[0048] (2) Dyeing process of gardenia blue plain wool loose fiber

[0049] Dye Formula: Gardenia Blue 2% (o.w.f),

[0050] Efficient selective reducing agent 0.5g / L,

[0051] Sodium hexametaphosphate 0.02g / L,

[0052] pH is 4-5,

[0053] Bath ratio 1:15,

[0054] The dyeing process of the fibers obtained in the first step: Dyeing process: start heating at 30°C, heat up to 50°C at 1°C / min, keep warm for 10 minutes, then heat up to 85°C at 1.5°C / min, keep warm for 40 minutes, and keep warm for 40 minutes at 2 ℃ / min after cooling down, the liquid is drained to be washed with water, such as Figure 4 sh...

Embodiment 3

[0060] Example 3 : Skein gardenia black dye dark color

[0061] (1) Strangulation pretreatment process

[0062] Treatment conditions: take 0.5% of the weight of the yarn weight of sodium bicarbonate and 1% of the weight of the yarn of coconut oil diethanolamide, dissolve it in warm water, add the wool yarn to it, the temperature is 50°C, the bath ratio is 1:20, and wash for 20 minutes After draining, shake dry.

[0063] (2) Gardenia melanin skein dyeing process

[0064] Coloring Formula: Gardenia Melanin 30% (o.w.f),

[0065] Efficient selective reducing agent 1g / L,

[0066] Sodium hexametaphosphate 0.02g / L,

[0067] pH is 5,

[0068] Bath ratio 1:15,

[0069] The dyeing process of the yarn obtained in the first step: Dyeing process: start heating at 30°C, raise the temperature to 60°C at 1°C / min, keep it warm for 20 minutes, then raise the temperature to 90°C at 1°C / min, keep it warm for 60 minutes, and then After cooling down at 2°C / min, drain the liquid and wait fo...

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Abstract

The invention discloses a method for exhausting gardenia pigment on wool (cashmere) fibers or fabrics. At present, the low dyeing rate and low color fastness of wool (cashmere) fiber natural dyes mainly come from the scale layer structure cells of the fiber. The technical scheme adopted in the present invention includes the pretreatment of wool (cashmere) fiber, segmented temperature-controlled dyeing and neutral water washing process, through designing suitable temperature control and low-temperature dyeing process, cooperating with efficient disulfide bond selective reducing agent and The dyes are dyed in the same bath, and the scale layer of wool (cashmere) is softened through temperature and auxiliaries, so that the wool (cashmere) fiber can fully diffuse the gardenia pigment into the interior of the wool (cashmere) fiber at a lower temperature to obtain level dyeing, The purpose of through dyeing is to realize the ecological, low temperature and low damage exhaust dyeing process of wool (cashmere) fiber, which not only saves energy and reduces consumption, but also greatly improves the quality of wool (cashmere) products.

Description

technical field [0001] The invention belongs to the field of textile chemical industry, and in particular relates to a method for exhausting dyeing of gardenia pigment on wool (or cashmere) fibers, which is also suitable for low-temperature dyeing of wool tops, yarns and other fabrics. Background technique [0002] As people's requirements for environmental protection and ecology are getting higher and higher, the entire textile dyeing and finishing industry has already focused on green and environmentally friendly production processes. The European Union and Japan have formulated various "environmental protection labeling systems" to control the environmental protection specifications of dyeing and finishing products. As we all know, a large number of chemicals used in the printing and dyeing process are the main source of pollution, especially the widely used synthetic dyes and dyeing and finishing auxiliaries. [0003] Compared with synthetic dyes, natural dyes have the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/34D06P1/673D06P1/667D06P1/613D06P1/607D06P1/66D06P1/653D06P1/651D06P1/655D06P3/14D06P5/02D06P5/04D06M11/76D06M13/402D06M101/12
Inventor 沈加加高普
Owner 淄博祥源纺织有限公司
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