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

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 ...

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 emulsification synergistic effect. In addition, in the preparation process, the emulsification process is difficult to control and easy Precipitation occurs, which affects the quality of rosin gum. In addition, there is a separate non-ionic emulsifier in the system. Rosin gum is prone to generate a large number of air bubbles during the sizing process, which affects the sizing effect and reduces the quality of the paper.

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