Polyether block copolymers and compositions that can be obtained therefrom

US8969511B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Lars Zander · Rommerskirchen, DE
• Uwe Franken · Dormagen, DE
• Christiane Kunze
• Michael Krebs · Hilden, DE
• Johann Klein · Goldkronach, DE

Key dates

• Filing date: Jul 27, 2012
• Grant date: Mar 3, 2015
• Expiry date: Jul 27, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2650/24
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyether block copolymers of the general structure B-(A-OH)n are described, where n is greater than or equal to 2 and blocks A are made up of polyoxypropylene units and the central block B of polyoxytetramethylene, polyoxyethylene, polybutadiene, polyisoprene, polyacrylate, polymethacrylate, polyamide, polyurethane, or polyester units. These polyether block copolymers are suitable for the manufacture of compositions that serve as the basis for preparations for use as a one-component moisture-hardening or two-component adhesive or sealant, for assembly bonding, for areal bonding, and/or for coating, as a reactive melt adhesive or as a laminating adhesive.