C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
31/22
C08G 77/04 (2006.01) C08K 5/54 (2006.01) C08K 5/549 (2006.01) C09K 17/00 (2006.01) E21D 9/00 (2006.01) E21D 11/38 (2006.01)
Patent
CA 1317449
Mo-3069 LeA 25,427 PROCESS FOR STRENGTHENING GEOLOGICAL FORMATIONS ABSTRACT OF THE DISCLOSURE The present invention relates to a process for strengthening geological formations in underground mining or underground construction work by the introduction of reaction mixtures which react to form polyurethane plastics into the formations which are required to be strengthened, wherein the reaction mixtures are based on a) a polyisocyanate component, b) a polyol component and c) at least one auxiliary agent or additive, characterized in that component c) contains a cyclic polydimethylsiloxane in the molecular weight range of 222 to 740 and in a quantity of about 0.01 to 5.0% by weight, based on the total weight of components a) and b). Mo-3069
574880
Cornely Wolfgang
Kapps Manfred
Mehesch Hans E.
Meyer Frank
Muller Hanns P.
Aktiengesellschaft Bayer
Bergwerksverband G.m.b.h.
Cornely Wolfgang
Kapps Manfred
Mehesch Hans E.
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