Pressure-sensitive adhesive from a resin-modified polyurethene

US8268922B2 · kind B2 · utility

Assignee

• tesa SE · DE

Inventors

• Uwe Schümann · Pinneberg, DE
• Kirstin Weiland · Hamburg, DE
• Bodo Zu Putlitz · Hamburg, DE

Key dates

• Filing date: Jun 27, 2007
• Grant date: Sep 18, 2012
• Expiry date: Jun 21, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Pressure-sensitive adhesive based on a mixture of chemically crosslinked polyurethane and at least one hydrocarbon resin, the chemically crosslinked polyurethane being a reaction product of at least one aliphatic or alicyclic polyisocyanate and a combination of at least one polypropylene glycol diol and one polypropylene glycol triol, reacted with one another catalytically in the presence of the at least one hydrocarbon resin, the at least one hydrocarbon resin being a monomer resin of the styrene/α-methylstyrene type.