Adhesive article and methods of making and using the same

US11370940B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Erik M. Townsend · South St. Paul, US
• Shantanu R. Ranade · Woodbury, US
• William H. Moser · Windom, US
• Kathleen S. Shafer · Woodbury, US
• Michael A. Kropp · Cottage Grove, US
• Jayshree Seth · Woodbury, US
• Ross E. Behling · Woodbury, US

Key dates

• Filing date: May 16, 2018
• Grant date: Jun 28, 2022
• Expiry date: Jun 7, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2433/006
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An adhesive article comprising first and second tacky latent adhesive layers disposed on respective first and second opposed major surfaces of a substrate. Each of the first and second tacky latent adhesive layers independently comprises at least one polymerizable component, and a redox initiator system comprising a transition metal complex that participates in a redox cycle, an oxidizing agent, and a blocked reducing agent represented by the formula ((I). Each of R1 and R2 are independently H, an alkyl, an aryl, or RPhoto5 with the proviso that at least one of R1 and R2 is RPhoto. RPhoto represents a photoremovable group. Each of R3 and R4 independently represents H, an alkyl group, or an aryl group comprising a monovalent ester, ether, urethane, or carbonate group. Methods of making and using the adhesive articles are also disclosed.