High-solid low-chlorine water repellent agent and preparation method thereof

A water-resistant agent and high-solid technology, applied in the direction of adding water-repellent agents, can solve problems such as affecting purity and other quality, reducing water-resistance performance, and product loss of water-repellent agents, so as to eliminate by-products of chlorine-containing organic substances, eliminate The effect of production and reduction of content

Active Publication Date: 2021-05-14
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods of reducing the content of organic chlorine will not only cause loss of anti-water agent products, affect the quality of purity, but also cost expensive equipment and materia

Method used

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  • High-solid low-chlorine water repellent agent and preparation method thereof
  • High-solid low-chlorine water repellent agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0020] Preparation of a high-solid and low-chlorine water-resistant agent: Add 200g of adipic acid and 90g of diethylenetriamine mixture into a three-necked flask, and react at 160°C for 4 hours. During the reaction, it is continuously separated from the system Moisture; Add 50g of hot deionized water and increase the stirring speed; After cooling the system to 80°C, add 100g of urea, 12g of epichlorohydrin, 68g of water and 6g of colchicine, react at 75°C for 6h; then add 12g of dilute sulfuric acid neutralizes the pH of the system to 6-8, and cools to obtain the final anti-water agent product.

Embodiment 2

[0022] Preparation of a high-solid and low-chlorine water-resistant agent: Add 210g of adipic acid and 100g of diethylenetriamine mixture into a three-necked flask, and react at 170°C for 5 hours. During the reaction, it is continuously separated from the system Moisture; Add 50g of hot deionized water, increase the stirring speed; After cooling the system to 80°C, add 110g of urea, 10g of epichlorohydrin, 70g of water and 7g of ephedrine, react at 75°C for 6h; then add dilute 12g of hydrochloric acid neutralizes the pH of the system to 6-8, and cools to obtain the final anti-water agent product.

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Abstract

The invention discloses a high-solid low-chlorine water-resistant agent and a preparation method thereof. The preparation method comprises the following steps of: 1, adding a mixture of adipic acid and diethylenetriamine into a reaction container, performing reaction for 3-6 h at the temperature of 150-180 DEG C, and in the reaction process, continuously separating moisture from a system; 2, cooling the reaction system in the step 1 to 80 DEG C, adding urea, epoxy chloropropane, water and alkaloid, and reacting for 6-8 hours at the temperature of 60-80 DEG C; and adding acid for neutralization, and cooling to obtain the water-resistant agent. The water repellent agent is prepared from the raw materials with the optimal ratio by combining an organochlorine production mechanism, and the production of chlorine-containing organic matter by-products can be avoided from the film formation of the raw materials; in addition, alkaloid is added in the reaction, and in the synthesis of polyamide polymers, the alkaloid can promote the proceeding of main reaction and inhibit the proceeding of part of side reaction, so that the content of organochlorine is reduced; and meanwhile, the alkaloid can also convert generated organochlorine compounds into glycerol and chlorine atoms with lower toxicity.

Description

technical field [0001] The invention relates to the field of water-resistant agents, in particular to a high-solid and low-chlorine water-resistant agent and a preparation method thereof. Background technique [0002] When coated paper is used for color printing, in order to achieve the purpose of surface waterproof or water resistance, in addition to adding water-resistant substances to the base paper or strengthening internal sizing, the most fundamental and direct way is to add water-resistant agents to the coating. As a component of coatings, water repellents can reduce the water solubility of pigments and adhesives after drying, improve the wet friction resistance and napping strength of coated paper, effectively improve the printability of coated paper, and reduce lint and powder falling. At present, water repellents mainly include amino resins, metal salts and polyamide epoxy resins. Among them, the polyamide epoxy resin water repellent has gradually developed into a...

Claims

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Application Information

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IPC IPC(8): D21H21/16
CPCD21H21/16
Inventor 施晓旦王虎尹东华
Owner SHANGHAI DONGSHENG NEW MATERIALS
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