Preparation method of low-formaldehyde easy-care resin

A non-iron resin and low-formaldehyde technology, which is applied in the direction of plant fibers, can solve the problems of no non-iron performance, low reactivity, and loss of multi-strength, and achieves low free formaldehyde content and formaldehyde emission. The preparation method is simple, The effect of high whiteness values

Inactive Publication Date: 2019-10-11
ZIBO LURUI FINE CHEM CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

This method is theoretically feasible, but the reactivity is low, and at the same time, there are few active groups in the molecular chain that can participate in the cross-linking with cellulose, and it does not have good non-ironing performance.
[0006] In the patent application number 201810648459.0 "Preparation method of non-ironing resin with improved fabric handle", a method for preparing non-ironing resin with high non-ironing and flexibility is disclosed. The non-ironing resin prepared by this method can endow fabrics with Good hand feeling and high non-iron grade, but there is also a relatively high formaldehyde content
At the same time, theoretically speaking, it has more force loss

Method used

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  • Preparation method of low-formaldehyde easy-care resin

Examples

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Comparison scheme
Effect test

Embodiment 1

[0049] Preparation of Dimethylolethylene Urea Solution

[0050] Add 600.0 g of 37% formaldehyde solution to a 1L four-neck glass flask equipped with a mechanical stirrer, a condenser, and a thermometer. Start stirring, add 242.7g of urea until the urea is completely dissolved, slowly raise the temperature to 40°C, stir and keep warm for 4 hours, the free formaldehyde content is 1.32%. The product was transferred to a vacuum distillation device, the vacuum was turned on to 300mbar, and the solution temperature was maintained at 40°C for vacuum distillation to distill 91g of fractions. The remaining product was transferred to a synthesis reaction device, the temperature was raised to 50° C., 30.2 g of urea was added, and the reaction was continued for 2 hours. The measured free formaldehyde content was 0.47%. Transfer the product to a vacuum distillation device, turn on the vacuum to 750mbar, maintain the solution temperature at 50°C for vacuum distillation, and distill 48g of ...

Embodiment 2

[0056] Preparation of Dimethylolethylene Urea Solution

[0057] Add 550.0 g of 37% formaldehyde solution to a 1L four-necked glass flask equipped with a mechanical stirrer, a condenser, and a thermometer. Start the stirring, add 216.3g of urea until the urea is completely dissolved, slowly raise the temperature to 50°C, stir and keep warm for 3 hours, the free formaldehyde content is 1.43%. Transfer the product to a vacuum distillation device, turn on the vacuum to 300mbar, maintain the solution temperature at 40°C for vacuum distillation, and distill 82.5g of fractions. The remaining product was transferred to the synthesis reaction device, the temperature was adjusted to 50° C., 42.1 g of urea was added, and the reaction was continued for 2.5 hours. The measured free formaldehyde content was 0.41%. Transfer the product to a vacuum distillation device, turn on the vacuum to 750mbar, maintain the solution temperature at 50°C for vacuum distillation, and distill 41.25g of frac...

Embodiment 3

[0063] Preparation of Dimethylolethylene Urea Solution

[0064] Add 650.0 g of 37% formaldehyde solution to a 1L four-necked glass flask equipped with a mechanical stirrer, a condenser, and a thermometer. Start stirring, add 245.2g of urea until the urea is completely dissolved, slowly raise the temperature to 60°C, stir and keep warm for 4 hours, the free formaldehyde content is 1.21%. Transfer the product to a vacuum distillation device, turn on the vacuum to 300mbar, maintain the solution temperature at 40°C for vacuum distillation, and distill 90.8g of fractions. The remaining product was transferred to a synthesis reaction device, the temperature was adjusted to 50° C., 39.2 g of urea was added, and the reaction was continued for 3 hours. The measured free formaldehyde content was 0.48%. The product was transferred to a vacuum distillation device, the vacuum was turned on to 750mbar, the solution temperature was maintained at 50°C for vacuum distillation, and 47.9g of fr...

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Abstract

The invention belongs to the technical field of cotton fabric after-finishing of the dyeing and finishing industry, and particularly relates to a preparation method of low-formaldehyde easy-care resin. The method comprises the steps that firstly, a formaldehyde solution reacts with first-batch urea, then, first-stage quantified distillation is performed, after distillation is completed, second-batch urea is added for a reaction, and then, second-stage quantified distillation is performed to obtain a dimethylol ethylene urea solution; deionized water and glyoxal are added into the solution fora reaction till the residual quantity of glyoxal in the solution is smaller than 0.8%, and cooling is performed; finally, alcohol substances are added, cooling is performed, ammoniac derivatives are added, the pH value is regulated to 5.0-7.0, and low-formaldehyde easy-care resin is obtained. According to the preparation method of the low-formaldehyde easy-care resin, the preparation method is simple, the cost is low, industrial production can be achieved, compared with common 2D resin, the prepared low-formaldehyde easy-care resin has the low strength loss and the high value of whiteness, andthe easy-care performance equivalent to the common 2D resin can be achieved.

Description

technical field [0001] The invention belongs to the technical field of cotton fabric finishing in the dyeing and finishing industry, and in particular relates to a preparation method of a low-formaldehyde non-ironing resin. Background technique [0002] As a textile fiber with a long history, cotton fiber has many limited properties, such as good air permeability, hygroscopicity, comfort and so on. But there are also many shortcomings, such as poor elasticity, easy to wrinkle, etc., which affect the wearing experience and bring a lot of inconvenience. Nowadays, with the continuous improvement of people's living standards, higher requirements are put forward for wearing comfort and other aspects. The research of non-ironing resin has also become a hot spot in the field of textile auxiliaries. [0003] Currently, N-methylol amide resins, commonly known as 2D resins, are widely used. This type of resin can endow the fabric with a better non-ironing effect, and at the same tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/423D06M101/06
CPCD06M15/423D06M2101/06
Inventor 张琳涵王艾德崔金德
Owner ZIBO LURUI FINE CHEM CO LTD
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