ACTIVATABLE ADHESIVE COMPOSITIONS AND LINERLESS LABELS AND TAPES COMPRISING SAME

• Main Authors: GRIFFITH, William B, ZOLYNSKI, Sarah, EINSLA, Melinda L, HIMMELBERGER, Daniel W
• Format: Patent
• Language: English; French
• Published: 05.04.2018
• 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

Activatable adhesive compositions are disclosed. The activatable adhesive compositions comprise a two-stage polymer particle, comprising a first stage comprising a hydrophilic acrylic polymer having an acid content of less than 200 mg KOH/g, a second stage polymerized within the first stage and comprising a hydrophobic acrylic polymer, and a tackifier soluble in the first stage and the second stage. Further, linerless labels and tapes comprising activatable adhesive compositions are disclosed. Still further, methods for adhering a first substrate to a second substrate using an activatable adhesive composition are also disclosed. L'invention concerne des compositions adhésives activables. Les compositions adhésives activables comprennent une particule polymère à deux phases comprenant une première phase comportant un polymère acrylique hydrophile ayant une teneur en acide inférieure à 200 mg KOH/g, une seconde phase polymérisée à l'intérieur de la première phase et comprenant un polymère acrylique hydrophobe, et un agent collant soluble dans la première phase et la seconde phase. L'invention concerne en outre des étiquettes et des bandes sans doublure comprenant des compositions adhésives activables. L'invention concerne également des procédés pour faire adhérer un premier substrat à un second substrat à l'aide d'une composition adhésive activable.