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US 4,113,014 AGranted
Process for reinforcing geological formations
AssigneeBayer Aktiengesellschaft
InventorsRolf Kubens, Herbert Gebauer
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AssigneeBayer Aktiengesellschaft
InventorsRolf Kubens, Herbert Gebauer
Estimating the term…
The present invention relates to a process for the reinforcement of geological formations and loose rock and earth masses by introducing, into the cavities of the geological formations or rock or earth masses which are required to be reinforced, reaction mixtures based on organic polyhydroxyl compounds and organic polyisocyanates which react to form polyurethanes, which process is characterized in that the polyisocyanate component used is a polyisocyanate mixture containing from about 10 to 80%, by weight, of 2,4'-diisocyanato-diphenylmethane. The present invention also relates to a two-chamber cartridge suitable for carrying out the process according to the present invention. This cartridge comprises two chambers separated from each other, one containing a polyisocyanate component and the second chamber containing a polyol component, the quantitative proportions of the two components being calculated so that when the cartridge is destroyed, a reaction mixture which reacts to yield a polyurethane is obtained, characterized in that the polyisocyanate component used is a polyisocyanate mixture containing from about 10 to 80%, by weight, of 2,4'-isocyanato -diphenylmethane.
Process for reinforcing geological formations and loose rock and earth masses comprising introducing into the cavities of the geological formations or masses of rock and earth which are required to be reinforced reaction mixtures based on organic polyhydroxyl compounds and organic polyisocyanates which react to yield polyurethanes, characterized in that the polyisocyanate component used is a polyisocyanate mixture containing from about 10 to 80%, by weight, of 2,4'-diisocyanato-diphenylmethane.
Process for reinforcing geological formations and loose rock and earth masses comprising introducing a two-chamber cartridge into a previously prepared bore hole, one chamber of the cartridge containing a polyol component and a second chamber containing a polyisocyanate component, and destroying the cartridge inside the bore hole to obtain a reaction mixture which reacts to form a polyurethane, characterized in that the polyisocyanate component used is a polyisocyanate mixture containing from about 10 to 80%, by weight, of 2,4'-diisocyanatodiphenylmethane.
A process for reinforcing geological formations and loose rock and earth masses comprising introducing an at least two-component reactive mixture into the material to be reinforced wherein said at least two-component reactive mixture comprises
A process for reinforcing geological formations and loose rock and earth masses comprising
Dependencies are inferred from the claim text.