IMPROVING THE ADHESIVE PERFORMANCES FOR WATER- BASED PRESSURE-SENSITIVE ADHESIVES

Emulsion copolymers based on acrylic and vinylic comonomers were prepared by two-stage seeded emulsion copolymerization and evaluated as pressure-sensitive adhesives. The obtained copolymers were characterised by their non-volatile content, viscosity, rheological behaviour and adhesive properties. The influence of composition on adhesive performances on different substrates (stainless steel, plasticized polyvinylchloride, and polyethylene) was investigated. Butyl acrylate offers an increase of peel and shear strength by comparison with ethyl acrylate. Using of monomers with hydroxyl groups is not indicated unless they offer sites for a further cross-linking. 1