Melt-adhesives for sealing off rocks or building materials

US7297756B2 · kind B2 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Bettina Becker · Monheim, DE
• Ingolf Scheffler · Wiesloch, DE
• Juergen Wichelhaus · Wuppertal, DE
• Liane Meuten · Monheim, DE

Key dates

• Filing date: Jun 21, 2001
• Grant date: Nov 20, 2007
• Expiry date: Jun 21, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/34
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyamide hot-melt adhesives based on the reaction products of polymeric fatty acids, C14-C18 monocarboxylic acids, C6-C12 dicarboxylic acids and diamines which do not contain any water-extractable, environmentally toxic constituents, which are suitable for sealing cavities in soils, in rock formations, building structures and/or walls, in particular for sealing tunnels, galleries, shafts, channels or caverns, to protect against the penetration of water or the penetration of liquids or gases which contain hazardous substances.