Nylon sea-island microfiber leather fabric composite dye and application thereof

Abstract

The invention relates to nylon sea-island microfiber leather fabric composite dye and application thereof. The dye is formed by combining acid dye and active dye. The application is as follows: at normal temperature, sequentially adding an acid level dyeing penetrating agent and composite dye to a dye bath, regulating pH value to 5-6, soaking a fabric in the dye bath, increasing temperature to 105-110 DEG C, preserving for 40-60min, and completely washing at 70-80 DEG C to obtain the dyed fabric; soaking the dyed fabric in a fixation bath, increasing temperature to 40-50 DEG C, preserving for 20-30min and washing. The composite dye formed by combining the acid dye and the active dye, is free from components violating against national technical standard for safety, can consistently dye poly urethane (PU) and nylon superfine fiber, and in particular can dye nylon microfiber leather. The composite dye is complete in chromatography, good in compatibility, synchronous to dye and easy to control quality.

Description

Technical field

[0001] The invention belongs to the field of composite dyes and applications, and particularly relates to a composite dye for nylon sea-island super fiber leather fabrics and applications. Background technique

[0002] Sea-island microfiber leather (the product variety is mainly nylon sea-island microfiber leather) is the highest-grade product in the "chemical coating leather". It is a polyurethane synthetic leather based on a three-dimensional network structure sea-island microfiber nonwoven fabric. Its texture and feel are comparable to high-grade natural leather. It has the inherent moisture and breathability of natural leather, and surpasses natural leather in terms of chemical resistance, water resistance, mildew resistance, and abrasion resistance. It is currently in the field of artificial leather New products with the highest technological level.

[0003] The composition of the sea-island superfine fiber synthetic leather base fabric is complicated. Because...

Examples

Embodiment 1

[0028] The composite dyes of different shades are shown in Table 1 below:

[0029]

[0030] Table 1

[0031] The ratio is the mass ratio of acid dye and reactive dye.

Embodiment 2

[0033] (1) Dyeing: under normal temperature, PPN acid level dyeing penetrant and composite dye yellow are added to the dyeing bath in sequence, and mixed evenly. Adjust the pH to 5 with the pH adjuster acetic acid to obtain the dye solution, and then immerse the nylon sea-island microfiber leather fabric in the dye solution to heat up The rate is 2°C / min, the temperature is increased to 110°C, kept for 40 minutes, and then the temperature is lowered to 80°C, and the dyed fabric is obtained. The composite dye is dyed with 2% (owf) deep dyeing. The dosage of PPN acid leveling penetrant is 2g / L (relative to the dye bath).

[0034] (2) Fixing: Immerse the dyed fabric in the fixing bath (the amount of fixing agent Cibatex PA is 5g / L, pH=4.5), keep it at 40℃ for 25min, and then wash it with water.

[0035] (3) The resulting color samples were tested for rubbing fastness, see Table 2.

[0036] The composite dye red and composite dye blue of Example 1 were dyed and fixed according to the c...

Embodiment 3

[0038] (1) Dyeing: under normal temperature, PPN acid level dyeing penetrant and composite dye golden color are added to the dyeing bath in turn, mix well, adjust the pH value to 6 with the pH adjuster acetic acid to obtain the dye liquor, and then immerse the nylon sea-island microfiber leather fabric in the dye liquor to heat up The rate is 1℃ / min, the temperature is increased to 105℃, kept for 60min, and then the temperature is lowered to 70℃, and the dyed fabric is obtained. The composite dye is dyed with 0.5% (owf) deep dyeing. The dosage of PPN acid leveling penetrant is 1g / L (relative to the dye bath).

[0039] (2) Fixing: Immerse the dyed fabric in the fixing bath (the amount of fixing agent Cibatex PA is 3g / L, pH=5), keep it at 50℃ for 20min, and then wash it with water.

[0040] (3) The resulting color samples were tested for rubbing fastness, see Table 2.

[0041] The composite dye scarlet, composite dye violet, and composite dye Turquoise blue of Example 1 were respecti...

Technical field

[0001] The invention belongs to the field of composite dyes and applications, and particularly relates to a composite dye for nylon sea-island super fiber leather fabrics and applications. Background technique

[0002] Sea-island microfiber leather (the product variety is mainly nylon sea-island microfiber leather) is the highest-grade product in the "chemical coating leather". It is a polyurethane synthetic leather based on a three-dimensional network structure sea-island microfiber nonwoven fabric. Its texture and feel are comparable to high-grade natural leather. It has the inherent moisture and breathability of natural leather, and surpasses natural leather in terms of chemical resistance, water resistance, mildew resistance, and abrasion resistance. It is currently in the field of artificial leather New products with the highest technological level.

[0003] The composition of the sea-island superfine fiber synthetic leather base fabric is complicated. Because...

Examples

Embodiment 1

[0028] The composite dyes of different shades are shown in Table 1 below:

[0029]

[0030] Table 1

[0031] The ratio is the mass ratio of acid dye and reactive dye.

Embodiment 2

[0033] (1) Dyeing: under normal temperature, PPN acid level dyeing penetrant and composite dye yellow are added to the dyeing bath in sequence, and mixed evenly. Adjust the pH to 5 with the pH adjuster acetic acid to obtain the dye solution, and then immerse the nylon sea-island microfiber leather fabric in the dye solution to heat up The rate is 2°C / min, the temperature is increased to 110°C, kept for 40 minutes, and then the temperature is lowered to 80°C, and the dyed fabric is obtained. The composite dye is dyed with 2% (owf) deep dyeing. The dosage of PPN acid leveling penetrant is 2g / L (relative to the dye bath).

[0034] (2) Fixing: Immerse the dyed fabric in the fixing bath (the amount of fixing agent Cibatex PA is 5g / L, pH=4.5), keep it at 40℃ for 25min, and then wash it with water.

[0035] (3) The resulting color samples were tested for rubbing fastness, see Table 2.

[0036] The composite dye red and composite dye blue of Example 1 were dyed and fixed according to the c...

Embodiment 3

[0038] (1) Dyeing: under normal temperature, PPN acid level dyeing penetrant and composite dye golden color are added to the dyeing bath in turn, mix well, adjust the pH value to 6 with the pH adjuster acetic acid to obtain the dye liquor, and then immerse the nylon sea-island microfiber leather fabric in the dye liquor to heat up The rate is 1℃ / min, the temperature is increased to 105℃, kept for 60min, and then the temperature is lowered to 70℃, and the dyed fabric is obtained. The composite dye is dyed with 0.5% (owf) deep dyeing. The dosage of PPN acid leveling penetrant is 1g / L (relative to the dye bath).

[0039] (2) Fixing: Immerse the dyed fabric in the fixing bath (the amount of fixing agent Cibatex PA is 3g / L, pH=5), keep it at 50℃ for 20min, and then wash it with water.

[0040] (3) The resulting color samples were tested for rubbing fastness, see Table 2.

[0041] The composite dye scarlet, composite dye violet, and composite dye Turquoise blue of Example 1 were respecti...

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