Acrylate emulsion as well as preparation method and application thereof
High solid content acrylate emulsion is prepared through seed emulsion polymerization technology, which is used to prepare pressure-sensitive adhesives, which solves the problem of slow drying speed of emulsion-type pressure-sensitive adhesives, and achieves faster drying speed and better bonding strength.
Patent Information
- Application Number
- CN202311199459.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-15
- Publication Date
- 2025-03-18
AI Technical Summary
The drying problem of existing emulsion-type pressure-sensitive adhesives is prominent, especially in pressure-sensitive adhesive products with large amounts of glue, which leads to a slow drying speed and is difficult to achieve the thickness required by the product.
A preparation method of an acrylate emulsion is adopted to form a core-shell structure emulsion with a high solid content through seed emulsion polymerization, and the solid content of the emulsion is increased to more than 60 wt%, and is used to prepare pressure-sensitive adhesives. The method includes contacting the seed emulsion monomer and other emulsifiers in the presence of a first initiator, forming material A and material B, and adding a fourth anionic emulsifier after the polymerization reaction, adjusting the pH to 8-9, to obtain an acrylate emulsion.
The drying speed of the pressure-sensitive adhesive is improved, the glueing process is reduced, and the film is transparent and bubble-free, improving the bonding strength.