Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1989-11-17
1990-10-23
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
528 48, C08G 1808, C04B 1608
Patent
active
049652923
ABSTRACT:
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
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Cornely Wolfgang
Kapps Manfred
Mehesch Hans E.
Meyer Frank
Muller Hanns P.
Bayer Aktiengesellschaft
Bergwerksverband GmbH
Gil Joseph C.
Roy Thomas W.
Sergent Rabon
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