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Leather dye uniformly dyeing penetrating agent and preparation method thereof

A technology of penetrant and dye, which is applied in the field of leveling agent and penetrating agent for leather dyes, which can solve the problems of restricted application range and achieve the effects of reducing dosage, excellent leveling performance and promoting absorption rate

Inactive Publication Date: 2010-09-15
SHANGHAI SINOFRA FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as Chinese patent CN1081731 discloses a kind of high-efficiency level dyeing and fixing color deepening agent for leather, which can improve dyeing fastness, coloring depth, vividness, etc., but it is only tested for leather processed by acrylic resin retanning agent. restricted

Method used

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  • Leather dye uniformly dyeing penetrating agent and preparation method thereof
  • Leather dye uniformly dyeing penetrating agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The described fatliquoring agent that improves leather intensity, its composition is as follows, is weight part:

[0020] Sodium lignosulfonate 100

[0021] Polyethylene polyamine 50

[0022] Sodium hexametaphosphate 5

[0023] Sodium sulfite 100

[0024] water 350

[0025] Polyethylene polyamine is a mixture of equimolar ratios of ethylenediamine, diethanolamine, dimethylamine and monomethylamine;

[0026] The preparation method is:

[0027] Dissolve sodium lignosulfonate in water first, then add polyvinylpolyamine, sodium sulfite and sodium hexametaphosphate in sequence and mix well, raise the temperature of the reaction system to 120°C and pressure 0.17Mpa, react for 3.5 hours, and the obtained liquid product is sprayed The final product is obtained after drying.

[0028] The obtained product has a brownish yellow or yellowish green powder appearance and a pH value (10% aqueous solution) of 7.5.

[0029] According to the following process, the product of examp...

Embodiment 2

[0036] The described fatliquoring agent that improves leather intensity, its composition is as follows, is weight part:

[0037] Tannin extract 100

[0038] Polyethylene polyamine 50

[0039] Sodium hexametaphosphate 5

[0040] Sodium sulfite 100

[0041] Water 350.

[0042] Polyethylene polyamine is a mixture of equimolar ratios of ethylenediamine, diethanolamine, dimethylamine and monomethylamine;

[0043] Tannin extract is commercially available chestnut extract.

[0044] The preparation method is:

[0045] Dissolve the tannin extract in water first, then add polyvinyl polyamine, sodium sulfite and sodium hexametaphosphate in sequence and stir to mix evenly, raise the temperature of the reaction system to 120°C, and the pressure is 0.18Mpa, and react for 5 hours, and the obtained liquid product is spray-dried get the final product.

[0046] The obtained product has a brownish-yellow or yellow-green powder appearance and a pH value (10% aqueous solution) of 8.0.

[0...

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Abstract

The invention discloses a leather dye uniformly dyeing penetrating agent and a preparation method thereof. The leather dye uniformly dyeing penetrating agent comprises the following components in part by weight: 0 to 100 parts of sodium lignin sulfonate, 50 to 100 parts of polyethylene polyamine, 1 to 5 parts of sodium hexametahposphate, 40 to 100 parts of sodium sulfite, 0 to 100 parts of vegetable tannin extract and 300 to 400 parts of water. The leather dye uniformly dyeing penetrating agent simultaneously has functions of a dye levelling agent and a penetrating agent, and has high uniformly dyeing performance to ensure that the surface of treated leather has uniform and bright colors; and the leather dye uniformly dyeing penetrating agent can obviously increase the permeability of a leather dye, shorten the operating time of a dyeing process, promote the absorption rate of the dye, and reduce the used amount of the dye.

Description

technical field [0001] The invention relates to a leather dye leveling agent and penetrating agent. technical background [0002] During the leather dyeing process, the dispersion and penetration of dyes have always been two major problems that plague manufacturers. The dispersibility of the dye is not good, it is easy to cause uneven dyeing on the leather surface, forming a "flower surface"; and the penetration of the dye is not good, the absorption and utilization of the dye by the leather is not good, and the dye only stays on the surface and cannot be dyed through. [0003] At present, there are many kinds of printing and dyeing auxiliaries in the market, and the quality is uneven, or one-sided emphasis is placed on dispersibility while ignoring permeability, or it only works on a certain type or a certain kind of dye. Such as Chinese patent CN1081731 discloses a kind of high-efficiency level dyeing and fixing color deepening agent for leather, which can improve dyeing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/50D06P1/645D06P1/62D06P1/667D06P1/46D06P3/32
Inventor 郑善强宋林
Owner SHANGHAI SINOFRA FINE CHEM
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