Cartridge for securing stay bars in bore holes containing a polyisocyanate component in one compartment and a polyol containing tertiary amine nitrogen in another compartment

US4171419A · kind A · utility

Assignees

• Bergwerksverband GmbH · DE
• BAYER HEALTHCARE LLC · DE

Inventors

• Frank Meyer · Essen, DE
• Rolf Kubens · Odenthal, DE
• Martin Winkelmann · Leverkusen, DE

Key dates

• Filing date: Feb 3, 1978
• Grant date: Oct 16, 1979
• Expiry date: Feb 3, 1998

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B13/143
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a two-compartment cartridge which is suitable for securing stay bars in bore holes by means of polyurethane resins and which is destructible by the stay bar, containing a polyisocyanate component on the one hand and a polyol component on the other hand, distinguished by the fact that the polyisocyanate component used is an aromatic polyisocyanate or a mixture of aromatic polyisocyanates, while the polyol component used is a polyol containing tertiary amine nitrogen and having a molecular weight of from about 119 to 3000 or a polyol mixture containing at least one such polyol. The present invention also relates to a process for securing stay bars in bore holes by introducing into the bore hole a two-compartment cartridge which contains components capable of forming a synthetic resin and which is destructible by driving in the stay bar and subsequently driving in the stay bar, distinguished by the fact that a cartridge of the type described above is used as the two-compartment cartridge.