A reactive emulsifier, its preparation method and application

A reactive emulsifier and reaction technology, applied in the direction of coating, etc., can solve the problems of reduced effective double bond content, reduced product reactivity, high reaction temperature, etc.
CN107474236BActive Publication Date: 2021-03-16联泓(江苏)新材料研究院有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
联泓(江苏)新材料研究院有限公司
Publication Date
2021-03-16

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Abstract

The invention discloses a reactive emulsifier for emulsion polymerization, a preparation method and application thereof. The reactive emulsifier includes the compound(s) shown as formula (I) and / or formula (II) in the specification. The preparation method includes: carrying out ring-opening reaction on fatty primary amine and a glycidyl ether compound with unsaturated double bond, then conducting alkoxylation on the product to obtain a nonionic reactive emulsifier with a reactive double bond and an anionic reactive emulsifier derived therefrom. The emulsifier provided by the invention employs the reaction of primary amino and the glycidyl ether compound to introduce the double bond, the reaction activity and selectivity are stronger, and the reaction conditions are milder, the double bond loss in the reaction can be reduced, and the reactive double bond content of the final emulsifier product can be increased. In the process of emulsion polymerization, the emulsifier has higher reactivity with monomers, and can improve the water resistance of emulsion products more effectively.
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Description

technical field

[0001] The invention belongs to the field of surfactants, and in particular relates to a high-reactivity emulsifier for emulsion polymerization and a preparation method thereof. Background technique

[0002] Emulsion polymerization is a common method for preparing high-molecular-weight, water-based polymer dispersions. The obtained polymer emulsions are widely used in industrial fields such as building interior and exterior wall coatings, adhesives, and paper sizing agents. Emulsifiers refer to surfactants that can stabilize emulsions, and are widely used in food, daily necessities, chemical and other industries. In the emulsion polymerization process, the main function of the emulsifier is to provide a place for nucleation, reaction and growth of the polymer particles, to stabilize the heterogeneous polymerization reaction process, and to ensure the dispersion stability of the emulsion product during storage and transportation. However, during the film-form...

Claims

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