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Polyquaternium cationic formaldehyde-free fixing agent and preparing method thereof

A technology of formaldehyde-free color-fixing agent and polyquaternium salt, which is applied in the field of formaldehyde-free color-fixing agent and its preparation, can solve the problem of little effect of color-fixing effect on superfine fiber base cloth, increase of dyeing cost and difficulty of wastewater treatment, super The poor dyeability of fine fiber base fabrics and other problems can achieve high industrial application value, good color fixing effect, and the effect of improving color fastness to wet rubbing and color fastness to dry rubbing

Inactive Publication Date: 2015-12-16
北京德成嘉化工科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, due to the poor dyeability of nylon itself; on the other hand, due to the very fine fibers produced, the dyeability of the microfiber base fabric is poor and the color fastness is low
Conventional polyamine-based formaldehyde-free color-fixing agents are mostly unbranched linear oligomers, which have little effect on the color-fixing effect of microfiber base fabrics, but instead increase the cost of dyeing and the difficulty of wastewater treatment

Method used

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  • Polyquaternium cationic formaldehyde-free fixing agent and preparing method thereof
  • Polyquaternium cationic formaldehyde-free fixing agent and preparing method thereof
  • Polyquaternium cationic formaldehyde-free fixing agent and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Synthesis of intermediate product 1

[0028] In reactor 1, add diethylenetriamine (10.3kg) and deionized water (10L), stir, blow in nitrogen, heat up to 60°C, start to drop epichlorohydrin (9.3kg), and control the reactor The temperature does not exceed 80°C. After the epichlorohydrin is added dropwise, the temperature is controlled at 75°C. After 1.5 hours of reaction, the reaction stops. The product is light yellow transparent slightly viscous liquid, pH=8-9, solid content is 66.18% .

[0029] (2) Synthesis of intermediate product 2

[0030] In reactor 2, add deionized water (10L), methanol (20L), epichlorohydrin (9.3kg), stir, add triethylamine (12.2kg) in batches, heat up to 55°C, and control the reaction temperature The temperature does not exceed 60°C, and the reaction stops after 2 hours. The product is a colorless and transparent solution, pH=9-10, and the solid content of the product is 45.4%.

[0031] (3) Grafting reaction

[0032] Combine the reaction...

Embodiment 2

[0035] (1) Synthesis of intermediate product 1

[0036] In reactor 1, add ethylenediamine (3.0kg) and deionized water (5L), stir, blow in nitrogen, heat up to 65°C, start adding epichlorohydrin (4.6kg) dropwise, and control the temperature of the reactor No more than 80°C. After the epichlorohydrin is added dropwise, the temperature is controlled at 75°C. After 2 hours of reaction, the reaction stops. The product is a light yellow transparent slightly viscous liquid, pH=8, and the solid content is 68.38%.

[0037] (2) Synthesis of intermediate product 2

[0038] In reactor 2, add trimethylamine aqueous solution (23.3kg, trimethylamine mass fraction is 33%), methanol (30L), epichlorohydrin (9.3kg), stir, heat up to 55°C, control the reaction temperature not to exceed 60°C, the reaction stopped after 2.5 hours, the product was a colorless and transparent solution, pH=9, and the solid content of the product was 46.8%.

[0039] (3) Grafting reaction

[0040] Combine the reactio...

Embodiment 3

[0043] (1) Synthesis of intermediate product 1

[0044]In reactor 1, add triethylenetetramine (14.6kg) and deionized water (10L), stir, blow in nitrogen, heat up to 60°C, start to add epichlorohydrin (9.3kg) dropwise, and control the reactor The temperature does not exceed 80°C. After the epichlorohydrin is added dropwise, the temperature is controlled at 75°C. After 1 hour of reaction, the reaction stops. The product is a light yellow transparent slightly viscous liquid, pH=9, and the solid content is 65.16%.

[0045] (2) Synthesis of intermediate product 2

[0046] In reactor 2, add deionized water (10L), methanol (20L), epichlorohydrin (9.3kg), stir, add triethylamine (12.2kg) in batches, heat up to 55°C, and control the reaction temperature The temperature does not exceed 60°C, and the reaction stops after 2 hours. The product is a colorless and transparent solution, pH=9-10, and the solid content of the product is 45.4%.

[0047] (3) Grafting reaction

[0048] Combine ...

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Abstract

The invention relates to a fixing agent and a preparing method thereof, in particular to a polyquaternium cationic formaldehyde-free fixing agent used for dyeing superfine fiber synthetic leather and a preparing method thereof. According to the fixing agent, quaternary ammonium branches are grafted on a molecular chain of a polymeric polyamine condensation compound to form a comb-shaped polymer in which quaternary ammonium and tertiary amine cations coexist. The fixing agent can effectively improve wet friction color fastness and dry-rubbing-resisting color fastness of the dyed superfine fiber synthetic leather and has a good fixing effect on the superfine fiber synthetic leather, and the preparation method of the fixing agent is simple and low in cost and has high industrial application value.

Description

technical field [0001] The invention relates to a color-fixing agent and a preparation method thereof, in particular to an formaldehyde-free color-fixing agent used for dyeing superfine fiber synthetic leather and a preparation method thereof. Background technique [0002] As a kind of dyeing auxiliary, color fixing agent can improve and enhance the fastness of textile dyeing, and make the dye and fiber more effectively fixed. The earliest color fixing agent used the condensate of dicyandiamide and formaldehyde, but due to the high content of free formaldehyde, it has been banned. Present formaldehyde-free color-fixing agent generally adopts the condensate of polyamine and epichlorohydrin, as the manufacturing process of the formaldehyde-free color-fixing agent formulated by diethylenetriamine and epichlorohydrin disclosed in CN1534133 patent application, this Color-fixing agents have better color-fixing effects on ordinary textiles, but they have the problem of slightly lo...

Claims

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Application Information

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IPC IPC(8): D06P5/08C08G73/04
Inventor 卢丽燕
Owner 北京德成嘉化工科技有限责任公司
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