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Active printing paste modifier without urea in application, its preparation method and composition

A technology of reactive printing and modifier, applied in dyeing, textile and papermaking, etc., can solve the problems of reducing the color yield of printing, high triethylene glycol consumption, and reducing the use of urea, so as to improve the effect of reactive printing and reduce ammonia nitrogen. The effect of discharging and ensuring hygroscopicity

Active Publication Date: 2021-01-26
TAICANG BAONI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in this way, the wastewater discharged from the factory contains a large amount of urea, and the existing general wastewater treatment equipment cannot decompose the urea to a satisfactory degree, which leads to the discharge of untreated urea into the water source and naturally decomposes into CO 2 and N-containing compounds, and the latter can accelerate the growth of algal substances, and eventually cause eutrophication of water quality. Therefore, reducing the use of urea in the printing and dyeing process of reactive dyes is a great contribution to reducing sewage discharge and protecting the environment
[0004] Some researchers started with solvent selection and did some research, such as using triethylene glycol as a urea substitute for reactive printing tests in "Research on Silk Low Urea Reactive Dye Printing Technology", but the printing depth of triethylene glycol alone is not high. , needs to be used in conjunction with urea, and the amount of triethylene glycol is high, the cost is not advantageous, and the raw materials containing hydroxyl structure are easy to combine with reactive dyes, which will reduce the printing color yield
At present, many researchers still conduct in-depth research on urea substitute additives, but there is little research on reactive printing pastes that do not contain urea in colorants

Method used

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  • Active printing paste modifier without urea in application, its preparation method and composition
  • Active printing paste modifier without urea in application, its preparation method and composition
  • Active printing paste modifier without urea in application, its preparation method and composition

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preparation example Construction

[0028] In a preferred embodiment, the present invention provides a kind of preparation method that does not need the active print paste modifier of urea in application, it comprises the steps:

[0029] Mix 1 mole of R-1,3-propylenediamine and an appropriate amount of solvent such as isopropanol, then add an appropriate amount of deionized water, raise the temperature to 80-90°C, and add 3 moles of allyl polyoxyethylene dropwise Polyoxypropylene epoxy ether (M=500-2000, preferably 1000-1500), after 2-3h dripping, then the temperature is raised to 85-95°C to continue the reaction for 2-4h, and at the same time, a quantitative concentration of 20% over Ammonium sulfate solution and 30-150 moles of (meth)acrylic acid, the reaction temperature is 85-90 ° C, 2-4 hours to drop, and keep warm at 85-95 ° C for 1 hour, cool to 40-50 ° C, add a certain amount of alkali metal Hydroxide, such as sodium hydroxide, to obtain a modifier solution. Finally, the modifier solution is subjected to...

Embodiment 1

[0061] The formula that present embodiment adopts comprises following raw material:

[0062]

[0063] Another aspect of the present invention provides a kind of preparation method of the active printing paste that does not need urea in above-mentioned application, it comprises:

[0064] (1) Preparation of Modifier 1

[0065] Mix 1.62g (0.005mol) of N-oleyl-1,3-propylenediamine and 5g of isopropanol, then add 45.38g of deionized water, raise the temperature to 80°C, add dropwise 22.5g (0.015mol ) of allyl polyoxyethylene polyoxypropylene epoxy ether (M=1500), 2h dripping, then the temperature was raised to 85°C to continue the reaction for 2h, and the concentration of 2.5g was added dropwise at the same time as 20% ammonium persulfate solution and 15g (0.2mol) of acrylic acid, the reaction temperature is 90°C, drop it for 3h, keep it warm at 90°C for 1h, cool down to 45°C, add 8g (0.2mol) of sodium hydroxide to obtain a modifier solution, and finally modify the The agent s...

Embodiment 2

[0069] The formula that present embodiment adopts comprises following raw material:

[0070]

[0071] In the application of the present embodiment, the active printing paste without urea is prepared according to the following steps:

[0072] 1) Preparation of Modifier 2

[0073] Mix 0.84g (0.0025mol) of N-stearyl-1,3-propylenediamine and 5g of isopropanol, then add 56.16g of deionized water, raise the temperature to 85°C, add dropwise 7.5g (0.0075 mol) of allyl polyoxyethylene polyoxypropylene epoxy ether (M=1000), 3h dropwise, then continue to react for 2h at 85°C, while adding dropwise the concentration of 2.5g is 20% ammonium persulfate solution and 20g (0.28mol) of acrylic acid, the reaction temperature is 90°C, drop it in 3h, keep it warm at 90°C for 1h, cool down to 50°C, add 8g (0.2mol) of sodium hydroxide to obtain a modifier solution, and finally The modifier solution was subjected to vacuum distillation, vacuum drying, and grinding to obtain modifier 2 with a pa...

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Abstract

The invention discloses a reactive printing paste modifier which does not need urea in application, a preparation method and a composition thereof. The invention has high printing depth, high printing uniformity and good hand feeling, and especially does not need urea in the printing color paste, thereby reducing ammonia nitrogen discharge. In the application of the present invention, the active printing paste modifier without urea comprises the following copolymerized units: R in the formula: straight chain C 10‑20 In the saturated or unsaturated aliphatic hydrocarbon group formula A), n: 7-32, m: 0-34; n+m does not exceed 40; the molar ratio of the copolymerization units represented by formula A and formula B is 1:30-150; The weight average molecular weight of the reactive printing paste modifier without urea in the application is 10 4 -10 6 .

Description

technical field [0001] The invention relates to a reactive printing paste modifier which does not need urea in application, a preparation method and a composition thereof. It is mainly suitable for the reactive printing process of cotton, linen, viscose and their blended fabrics. Background technique [0002] Cellulose fiber reactive printing products are bright in color, soft to the touch, hydrophilic and breathable, high-grade products, and are important printing fabrics. 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, it has become a trend to use reactive dyes for printing processing, but the problems in the production process cannot be ignored. For example, a series of problems such as poor quality of printing paste, backward formula, hard hand feeling, low printing color yield, etc., make it d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/607D06P1/38D06P1/50D06P1/653D06P1/673D06P3/66
CPCD06P1/38D06P1/50D06P1/607D06P1/6533D06P1/67383D06P3/66
Inventor 姬海涛李正雄
Owner TAICANG BAONI IND CO LTD
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