Self-adhesive tape

US6129983A · kind A · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Uwe Schümann · Pinneberg, DE
• Kirstin Weiland · Hamburg, DE
• Wolfgang Schacht · Hamburg, DE

Key dates

• Filing date: Jul 29, 1998
• Grant date: Oct 10, 2000
• Expiry date: Jul 29, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2848
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Pressure-sensitive double-sided self-adhesive tape comprising a backing which is coated on both sides with pressure-sensitive adhesive compositions and which is composed PA1 a) to a proportion of up to 50% by weight, in particular from 30 to 40% by weight, of a crosslinked, unfoamed polyurethane PA2 i) formed from hydroxyl-functionalized polybutadiene, polyesterdiol, polyestertriol, polyesterpolyol, polyetherdiol, polyethertriol or polyetherpolyol, polyetherdiamine, polyethertriamine, polyetherpolyamine and monohydric alcohol (monool), monofunctional amine (monoamine), polyethermonool, polyethermonoamine or from products derived from the four last-mentioned groups PA2 ii) and from diisocyanate or chemically derived isocyanate, PA2 iii) the polyurethane being free from plasticizer, PA1 b) to a proportion of from 50 to 70% by weight of fillers, PA1 c) and, if desired, further auxiliaries.