Nylon heat-resistant anti-yellowing agent not capable of adsorbing no formaldehyde and preparation method thereof

An anti-yellowing agent and a technology for adsorbing formaldehyde, which can be used in dyeing methods, organic chemistry, fiber types, etc., can solve the problems of high cost and poor water solubility, and achieve the effects of low cost, excellent water solubility, and strong operability.

Inactive Publication Date: 2019-12-13
伟格仕纺织助剂(江门)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention patent "HN-130 anti-yellowing agent synthesis process" of patent publication number CN103012216A proposes to synthesize 1,6-hexamethylene-bis(N,N-dimethylsemicarbazide) as an anti-yellowing agent for nylon and spandex fibers. There are problems of high cost

Method used

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  • Nylon heat-resistant anti-yellowing agent not capable of adsorbing no formaldehyde and preparation method thereof
  • Nylon heat-resistant anti-yellowing agent not capable of adsorbing no formaldehyde and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: A kind of polyamide fiber anti-yellowing agent that does not absorb formaldehyde, by mass percentage, is made up of following components: the antioxidant (containing solvent) 50% of nitrogen-containing heterocyclic structure; Deionized water 47%; Hydrogen Sodium oxide NaOH 3%.

[0022] The preparation method of the polyamide fiber anti-yellowing agent that does not absorb formaldehyde, comprises the following steps:

[0023] (1) Synthesis of antioxidants with a nitrogen-containing heterocyclic structure: use a 500ml four-necked flask, first add 40% solvent ethanol to the flask by mass ratio, start stirring, and then mix 23.5% The hydrazine hydrate was added, and the temperature was raised to 80°C after the dropwise addition, and then 36.0% glutaric acid was added in 5 times. After the addition, 0.5% potassium bisulfate was added, and the temperature of the material was controlled at 90°C and kept under pressure and stirred for 3 hours, and then cooled to ...

Embodiment 2

[0025] Embodiment 2: A kind of polyamide fiber anti-yellowing agent that does not absorb formaldehyde, by mass percentage, is made up of following components: the antioxidant (containing solvent) 60% of nitrogen-containing heterocyclic structure; Deionized water 37%; Hydrogen Sodium oxide NaOH 3%.

[0026] The preparation method of the polyamide fiber anti-yellowing agent that does not absorb formaldehyde, comprises the following steps:

[0027] (1) Synthesis of antioxidants with nitrogen-containing heterocyclic structure: use a 500ml four-necked flask, first add 30% solvent ethanol to the flask according to the mass ratio, start stirring, and then mix 25.2% hydrazine hydrate was added, and the temperature was raised to 80°C after the dropwise addition, and then 44.2% succinic acid was added in 5 times. hours, and then cooled to room temperature to obtain an antioxidant with a nitrogen-containing heterocyclic structure soluble in ethanol.

[0028] (2) Composite: use the four...

Embodiment 3

[0029] Embodiment 3: A kind of polyamide fiber anti-yellowing agent that does not absorb formaldehyde, by mass percentage, is made up of following components: the antioxidant (containing solvent) 25% of nitrogen-containing heterocyclic structure; Deionized water 70%; Hydrogen Sodium oxide NaOH 5%.

[0030] The preparation method of the polyamide fiber anti-yellowing agent that does not absorb formaldehyde, comprises the following steps:

[0031] (1) Synthesis of antioxidants with nitrogen-containing heterocyclic structure: use a 500ml four-necked flask, first add 50% solvent-ethanol into the flask according to the mass ratio, start stirring, and then 15.2 % of unsymmetrical dimethylhydrazine was added, and the temperature was raised to 80°C after the dropwise addition, and then 33.6% of adipic acid was added in 5 times, and after the addition, 1.2% of potassium bisulfate was added, and the temperature of the material was kept at 100°C under pressure and stirred for 4 hours, t...

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Abstract

The invention discloses a nylon heat-resistant anti-yellowing agent not capable of adsorbing no formaldehyde and a preparation method thereof. The nylon heat-resistant anti-yellowing agent is preparedfrom 20-70% of an anti-oxidant agent containing an azacycle structure, 20-78% of deionized water and 2-10% of sodium hydroxide (NaOH). The preparation method comprises the steps that a 500mL four-necked flask is employed, based on the total mass, 20-70% of the anti-oxidant agent containing the azacycle structure dissolved into a solvent is added into the flask, 20-78% of the deionized water is added to adjust the effective content to be 5-40%, stirring is conducted for 20 minutes, 2-10% of the sodium hydroxide (NaOH) is added to adjust the pH value of the solution to be 5.0-7.0, and a clear liquid product, namely the finished nylon heat-resistant anti-yellowing agent, is obtained. The nylon heat-resistant anti-yellowing agent adsorbs no formaldehyde, the heat-resistant anti-yellowing effect is good, the water solubility is excellent, the process is simple, the operability is high, no pollutants are generated, the cost is low, and the nylon heat-resistant anti-yellowing agent is friendly to the human health and wide in market prospect.

Description

technical field [0001] The invention relates to a printing and dyeing auxiliary agent, in particular to a nylon heat-resistant yellowing agent which does not absorb formaldehyde and a preparation method thereof. Background technique [0002] Nylon, also known as polyamide fiber or nylon, has many amide groups in its molecular structure. Spandex is also called polyurethane fiber, and there are many carbamate groups in its molecular structure. Due to the presence of amide groups and amino groups, under the action of light and heat, nylon / spandex elastic fabrics have disadvantages such as easy yellowing and brittleness. Especially during high-temperature processing, such as heat setting, especially during high-temperature pre-setting and compression molding of underwear fabrics, it is prone to yellowing and discoloration, and even leads to fiber brittleness, loss of strength and aging, which affects the appearance quality of the product , At the same time, it will also have a...

Claims

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Application Information

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IPC IPC(8): D06P1/642D06P1/673D06P3/82D06M13/355D06M11/38C07D237/04C07D243/02C07D245/02D06M101/34D06M101/38
CPCC07D237/04C07D243/02C07D245/02D06M11/38D06M13/355D06M2101/34D06M2101/38D06M2200/25D06P1/6426D06P1/6735D06P3/8209
Inventor 彭远森汤永华
Owner 伟格仕纺织助剂(江门)有限公司
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