Linerless label

US8980407B2 · kind B2 · utility

Assignee

• Bayer Intellectual Property GmbH · DE

Inventors

• Jörg Büchner · Bensberg, DE
• Harald Kraus · Leverkusen, DE
• Pantea Nazaran · Neunburg vorm Wald, DE
• Dirk Dijkstra

Key dates

• Filing date: Jun 3, 2011
• Grant date: Mar 17, 2015
• Expiry date: Jun 3, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2891
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg>50° C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg<+10° C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.