60% high solid content pressure-sensitive adhesive and preparation method thereof

Abstract

The invention relates to a 60% high solid content pressure-sensitive adhesive and a preparation method thereof, and discloses a way for obtaining environment-friendly pressure-sensitive adhesive whichis applicable to manufacturing a surface protective film of building materials, electrical and electronic products, machines, furniture and the like. The pressure-sensitive adhesive is prepared by adopting a semi-continuous seed emulsion polymerization, taking butyl acrylate, methyl methacrylate, hydroxy-ethyl acrylate and acrylic acid as monomers, synchronously adding mixed emulsifying agent formed by anionic emulsifying agent and nonionic emulsifying agent as well as mixed liquid formed by initiating agent and ammonium persulphate, and having polymerization reaction in subacid deionized water. The pressure-sensitive adhesive has no emission of noxious and harmful substances when in production and use, so as to purify the environment. Meanwhile, the protective film and base material produced by the pressure-sensitive adhesive has better combination, do not damage the surface of the protected object, and can be torn off from the surface of the protected object so as to leave no residual trace.

Description

Technical field [0001] The invention belongs to the technical field of chemical industry, and is an environment-friendly pressure-sensitive adhesive with high solid content, which is suitable for the manufacture of surface protective films of building materials, electronic and electrical products, metal profiles, machinery, furniture and the like. Background technique [0002] For a long time, most glues used in the manufacture of protective films are solvent-based pressure-sensitive adhesives. Because most of the commonly used solvents are toxic and harmful organic compounds, the existing solvent-based pressure-sensitive adhesives pollute the environment and cause harm to the human body. high. Although there are a few environmentally friendly pressure-sensitive adhesives in the market, their solid content is far lower than 60%, which is not conducive to low-cost production. Some have high viscosity and poor leveling, and some are compatible with certain substrates Poor cap...

AI Technical Summary

Problems solved by technology

[0002] For a long time, most glues used in the manufacture of protective films are solvent-based pressure-sensitive adhesives. Because most of the commonly used solvents are toxic and harmful organic compounds, the existing solvent-based pressure-sensitive adhesives pollute the environment and cause harm to the human body. high

Although there are a few environmentally friendly pressure-sensitive adhesives in the market, their solid content is far lower than 60%, which is not conducive to low-cost production. Some have high viscosity and poor leveling, and some are compatible with certain substrates Poor capacitance, causing difficulties

In short, the existing pressure-sensitive adhesives are difficult to achieve satisfactory results.