Process for the consolidation of geological formations and loosened rock and earth masses

US4114382A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Rolf Kubens · Odenthal, DE
• Frank Meyer · Essen, DE

Key dates

• Filing date: May 6, 1977
• Grant date: Sep 19, 1978
• Expiry date: May 6, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/5755
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention concerns a method of consolidating geological formations, heaped rock and earth masses by applying a polyurethane reaction system to the material to be consolidated. The reaction system comprises a polyisocyanate component and a polyol component wherein the polyol component contains about 5 to 50 wt.% of a special polyether with an OH number under about 100. This polyether is produced by the reaction of a compound having more than one reactive hydrogen atom per molecule and a molecular excess of a 1,2-alkylene oxide. The reaction system can also contain conventional polyurethane additives such as foaming agents, fillers, foam stabilizers and catalysts. In a preferred embodiment, the special polyether is produced from ethylene diamine or triethanol amine.