ACRYLIC-BASED ADHESIVE COMPOSITION WITH ETHYLENE VINYL ACETATE

• Main Authors: MOGLIA, Robert S, BINDER, Joseph B, PUJARI, Saswati, UHL, Isabelle, YADAV, Vinita, OZAIR, Sehban N, JANKO, Pavel, MALOTKY, David L
• Format: Patent
• Language: English; French
• Published: 24.03.2022
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

The present disclosure is directed to a water-based pressure-sensitive adhesive composition. In an embodiment, the water-based pressure-sensitive adhesive composition includes (A) an acrylic dispersion composed of particles of (i) an acrylic-based polymer with a glass transition temperature (Tg) less than -20°C, and (ii) a surfactant. The water-based pressure-sensitive adhesive composition also includes (B) an ethylene vinyl acetate (EVA) dispersion comprising (i) particles of an ethylene and vinyl acetate copolymer having from 10 wt% to less than 50 wt% vinyl acetate comonomer, and (ii) a dispersant. Further disclosed are articles with the water-based pressure-sensitive adhesive composition. La présente divulgation concerne une composition adhésive sensible à la pression à base d'eau. Dans un mode de réalisation, la composition adhésive sensible à la pression à base d'eau comprend (A) une dispersion acrylique composée de particules (i) d'un polymère à base d'acrylique ayant une température de transition vitreuse (Tg) inférieure à -20 °C, et (ii) d'un tensioactif. La composition adhésive sensible à la pression à base d'eau comprend également (B) une dispersion d'éthylène-acétate de vinyle (EVA) comprenant (i) des particules d'un copolymère d'éthylène et d'acétate de vinyle ayant de 10 % en poids à moins de 50 % en poids de comonomère d'acétate de vinyle, et (ii) un dispersant. L'invention concerne en outre des articles comprenant la composition adhésive sensible à la pression à base d'eau.