Uni-President Enterprises. has filed a patent for a temporary high-temperature-resistant dispersing agent. The agent, a block high-molecular polymer, is prepared from polysiloxane with an amino group. It can be used directly or with other additives, meeting dispersion needs in various scenarios. The preparation involves a Mannich reaction with specific compounds. GlobalData’s report on Uni-President Enterprises gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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High-temperature-resistant dispersing agent prepared by mannich reaction
A patent application (Publication Number: US20240034842A1) describes a preparation method for a temporary high-temperature-resistant dispersing agent. The process involves a Mannich reaction using an organosilicon compound with two amino groups, an aldehyde (ketone) compound, and an organic compound with two phenolic hydroxyl groups. The organosilicon compound can be a small molecule siloxane, oligosiloxane, polysiloxane, silicone resin, silicone rubber, or copolymers containing amino groups. The aldehyde (ketone) compound can be formaldehyde, acetone, benzaldehyde, or others, while the organic compound with phenolic hydroxyl groups can be bisphenol A, bisphenol F, or similar compounds. The reaction can be carried out with or without a solvent, with suitable solvents including dioxane, toluene, and others. The material molar ratio and reaction temperature are also specified in the claims.
Furthermore, the patent application includes details on the reaction conditions, such as the material molar ratio of reactants, reaction temperature, and time. The reaction temperature ranges from 30-180°C, with a recommended range of 40-80°C, and the reaction time is between 1-60 hours, with a preferred range of 12-24 hours. The resulting temporary high-temperature-resistant dispersing agent can be used directly or in combination with other dispersion auxiliaries and surfactants. The application outlines various use methods for the dispersing agent, including serving as a dispersant alone, with catalysts, fillers, and auxiliaries, or in combination with other dispersion aids. Overall, the patent application provides a detailed method for preparing a dispersing agent suitable for high-temperature applications, offering potential benefits in various industries requiring stable dispersion of materials under extreme conditions.
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