Cationic rosin size prepared by using Gemini emulsifier and preparation method thereof

A cationic rosin gum and emulsifier technology, which is applied in the field of cationic rosin gum and its preparation, can solve the problems of weak emulsification synergistic effect, lower paper quality, and poor single emulsification effect, achieve superior emulsification performance and stability, and reduce production costs , the effect of reducing the reaction time

Inactive Publication Date: 2019-07-02
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wherein the United States US6369119 adopts a single cationic surfactant to prepare rosin gum, because the single emulsification effect is poor, the rosin gum stability of making is not good enough, can not store for a long time
Among them, the Chinese patent CN1081262C adopts a nonionic emulsifier-cationic emulsifier mutual emulsification system. This system formed only by simple mixing and compounding has a weak emul

Method used

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  • Cationic rosin size prepared by using Gemini emulsifier and preparation method thereof
  • Cationic rosin size prepared by using Gemini emulsifier and preparation method thereof
  • Cationic rosin size prepared by using Gemini emulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Put 200g of rosin and 100g of maleic rosin mixture into the bottom of the reaction kettle, heat to about 150°C to melt; first keep the stirring speed at about 200 rpm, slowly add 80g of gemini emulsifier specially for rosin gum, and the dropping time is 30min. Increase the stirring speed to 1500 rpm during the dropwise addition process, and continue to stir for 5 minutes after the emulsifier is added; keep 200g of deionized water at about 60°C, and slowly drop it into the reactor for 25 minutes. During the dropping process, reduce the stirring speed to 200 rpm; cool the material in the reactor to below 30°C, add 50g of aluminum sulfate, and then add 350g of cold deionized water to adjust the solid content to 35% before discharging.

Embodiment 2

[0042] Put 200g of rosin and 100g of fuma rosin mixture into the bottom of the reaction kettle, heat it to about 150°C and melt it; first keep the stirring speed at about 200 rpm, slowly add 80g of gemini emulsifier specially for rosin gum, and the dropping time is 30min. Increase the stirring speed to 1500 rpm during the dropwise addition process, and continue to stir for 5 minutes after the emulsifier is added; keep 200g of deionized water at about 60°C, and slowly drop it into the reactor for 25 minutes. During the dropping process, reduce the stirring speed to 200 rpm; cool the material in the reactor to below 30°C, add 60g of aluminum chloride, add 350g of cold deionized water to adjust the solid content to 35%, and then discharge the material .

Embodiment 3

[0044] Put 200g of rosin and 100g of fuma rosin mixture into the bottom of the reaction kettle, heat it to about 150°C and melt it; first keep the stirring speed at about 200 rpm, slowly add 80g of gemini emulsifier specially for rosin gum, and the dropping time is 30min. Increase the stirring speed to 1500 rpm during the dropwise addition process, and continue to stir for 5 minutes after the emulsifier is added; keep 200g of deionized water at about 60°C, and slowly drop it into the reactor for 25 minutes. During the dropping process, reduce the stirring speed to 200 rpm; cool the material in the reactor to below 30°C, add 50g of aluminum sulfate, and then add 350g of cold deionized water to adjust the solid content to 35%. .

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Abstract

The invention discloses a cationic rosin size prepared by using a Gemini emulsifier. The cationic rosin size comprises the following components in parts by weight: 100-200 parts of rosin, 20-80 partsof fortified rosin, 25-80 parts of a Gemini emulsifier, 50-200 parts of an aluminum salt, and an appropriate amount of water, wherein the Gemini emulsifier is prepared by carrying out reactions of thefollowing components in parts by weight: 10-50 parts of a rosin monomer, 10-60 parts of styrene, 10-60 parts of acrylamide, 10-50 parts of diethyl diallyl ammonium chloride, 10-50 parts of OP-10, 0.4-200 parts of 1-dodecanethiol, 10-300 parts of ethanol, and 1-50 parts of sodium persulfate. According to the method, the Gemini emulsifier is adopted, and thus a stable system can be formed in the rosin solution, the reaction time is reduced, the preparation process is simplified, the production cost is reduced, and the obtained cationic rosin size has fine grain size, small foams, high whitenessand high stability.

Description

technical field [0001] The invention relates to the field of rosin gum preparation, in particular to cationic rosin gum prepared by using a gemini emulsifier and a preparation method thereof. Background technique [0002] Cationic dispersed rosin gum, as the third generation product of rosin series, has many advantages, such as high free rosin content, fine dispersion particle size, etc., saving about 50% of rosin consumption and 30% of aluminum sulfate consumption. White water pollution, improve paper sizing, whiteness and strength. [0003] At present, the process of preparing cationic rosin gum is mainly prepared by phase inversion method under normal temperature and pressure. The key to the success of the rosin gum prepared by this method is to select a suitable emulsifier type and preparation process. Only when the two are suitable can the stability of the rosin gum dispersion system be solved. [0004] At present, there are many patents and literature reports on the ...

Claims

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Application Information

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IPC IPC(8): D21H19/14D21H19/20D21H21/16C08F289/00C08F212/08C08F220/56C08F226/02
CPCC08F289/00D21H19/14D21H19/20D21H21/16C08F212/08
Inventor 施晓旦段鹏真金霞朝
Owner SHANGHAI DONGSHENG NEW MATERIALS
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