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Reactive printing urea substitute and preparation method thereof

A technology of reactive printing and substitute agent, applied in dyeing, textile and papermaking, etc., can solve the problems of unsatisfactory hand feel uniformity, insufficient printing depth, neglecting fiber affinity, etc. Printing depth and uniformity, the effect of ensuring printing uniformity

Active Publication Date: 2019-04-09
TAICANG BAONI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The urea substitutes for reactive printing mentioned by the above researchers are all studied from the perspective of dye solubilization. Although they have a certain solubilization effect on some dyes, they ignore the affinity of dyes to fibers in the color paste, so that more dyes stay in the In the color paste and did not react with the fiber, resulting in the final printing depth after soaping is not high
Some researchers compound solvents with some surfactants. Although it has a certain solubilizing effect, it does not meet the printing requirements. The depth, feel, and especially the uniformity are not up to the requirements, and the phenomenon of white ground appears. In order to improve the shortcomings , it is still necessary to add a certain amount of urea to alleviate the shortage of urea substitutes for active printing, so that the problem of ammonia nitrogen emission in active printing has not been fundamentally solved

Method used

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  • Reactive printing urea substitute and preparation method thereof
  • Reactive printing urea substitute and preparation method thereof
  • Reactive printing urea substitute and preparation method thereof

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preparation example Construction

[0029]In a more preferred embodiment, the preparation method of printing urea substitute of the present invention comprises:

[0030] Add aliphatic glycol ether carboxylate, polyoxyethylene ether carboxylate, and buffering agent to the modified clay in sequence, stir at a high speed of 800-1000rps for about 1 hour, and finally add deionized water to obtain active printing Urea substitute.

[0031] Compared with the prior art, the present invention has the following advantages and effects: high printing depth, high printing uniformity, and no need to add urea to the color paste.

Embodiment 1

[0056] The formula that present embodiment adopts comprises following raw material:

[0057]

[0058] The active printing urea substitute of the present embodiment is prepared according to the following steps:

[0059] (1) The preparation method of cardanol polyoxyethylene ether sodium acetate (EO=7): 9 parts by weight of chloroacetic acid is dissolved in a sodium hydroxide solution of 50% by weight with 7 parts by weight of concentration, and then polymerized with 84 parts by weight of cardanol Mix oxyethylene ether alcohol (EO=7), heat up to 80°C, and keep it warm for 5 hours. Finally, recrystallize the product 3 times with absolute ethanol, filter with 1-3μm pore size filter paper, and distill under reduced pressure to remove ethanol and water to obtain Sodium cardanol oxyethylene ether acetate (EO=7), with a melting point of 10°C.

[0060] (2) The preparation method of modified clay 1: mix 0.5 parts by weight of acrylic acid with 22.5 parts by weight of allyl alcohol p...

Embodiment 2

[0063] The formula that present embodiment adopts comprises following raw material:

[0064]

[0065] The active printing urea substitute of the present embodiment is prepared according to the following steps:

[0066] (1) The preparation method of fatty acid polyoxyethylene ester sodium acetate (EO=15): 8 parts by weight of chloroacetic acid are dissolved in 50 parts by weight of sodium hydroxide solution with 7 parts by weight of concentration, and then mixed with 85 parts by weight of octadecanoic acid Mix polyoxyethylene ether esters (EO=15), heat up to 80°C, and keep warm for 5 hours. Finally, recrystallize the product with absolute ethanol for 3 times, filter with 1-3μm pore size filter paper, and distill under reduced pressure to remove ethanol and water. Fatty acid polyoxyethylene sodium acetate (EO=15) was obtained with a melting point of 8°C.

[0067] (2) The preparation method of modified clay 2: mix 0.5 parts by weight of acrylic acid with 24.5 parts by weight ...

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Abstract

The invention discloses a reactive printing urea substitute and a preparation method thereof. Based on the total weight of the reactive printing urea substitute, the reactive printing urea substitutecomprises the following components in percentage by weight: 10 to 35 percent of aliphatic diol ether carboxylate, 1 to 15 percent of polyoxyethylene ether carboxylate, 0.2 to 5 percent of a bufferingagent, 2 to 15 percent of modified clay and 50 to 75 percent of water. The reactive printing urea substitute is high in printing depth and high in printing uniformity; the products do not comprise ammonia nitrogen.

Description

technical field [0001] The invention relates to an active printing urea substitute and a preparation method thereof. It is mainly suitable for the reactive printing process of cotton, linen, viscose and their blended fabrics. Background technique [0002] As a new type of dye, reactive dyes have the advantages of wide color spectrum, bright color and strong applicability, which can meet the requirements of the textile printing industry for color and printing quality. Nowadays, the use of reactive dyes for printing has become a trend, but the problems in the production process cannot be ignored. In the printing process of reactive dyes, the amount of dyes is large and the amount of water is small, so a large amount of urea needs to be added to aid in dissolution. At the same time, urea plays the role of moisture absorption and expansion, and can release the locked water during steaming, providing favorable conditions for the fixation of dyes and fibers, and fully swelling t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/651D06P1/613D06P1/673D06P1/38
CPCD06P1/38D06P1/6136D06P1/65131D06P1/67383
Inventor 姬海涛李正雄
Owner TAICANG BAONI IND CO LTD
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