TACKIFIED ACRYLIC PRESSURE SENSITIVE ADHESIVE AND COMPOSITE ARTICLE

• Main Authors: MOON, JOHN D, MOORE, CHERYL L, MARTIN, MICHAEL K, TRAYNOR, WILLIAM J
• Format: Patent
• Language: English; Korean
• Published: 22.04.1996
• Edition: 6
• 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

A pressure-sensitive adhesive that has high cohesive strength and adheres permanently to high-solids automotive paint systems preferably comprises a mixture of (1) a crosslinked acrylic copolymer of acrylic acid ester and N-vinyl-2-pyrrolidone, and (2) certain tackifier resins. Useful tackifier resins are poly(isobornylmethacrylate), pentaerythritol ester of rosin, and mixed-aliphatic/aromatic polymeric tackifier resins such as a t-butylated styrene. The tackifier resin preferably has a Tg of at least 30 DEG C, Mn from 300 to 3000, and a solubility parameter from 8 to 9. The novel pressure-sensitive adhesive is particularly useful as a dense surface layer of a composite tape having a foamlike core.