Title:
【発明の名称】地層の強化法
Document Type and Number:
Japanese Patent JPS62501916
Kind Code:
A
Abstract:
The present invention relates to a method of strengthening geological formations in underground workings or mines by introducing reaction mixtures containing a polyisocyanate component (a), a polyol component (b) and optionally auxiliary agents and additives (c) into the formation which is required to be strengthened and reacting the mixtures to form polyurethanes, wherein polyol component (b) contains mixtures of (i) organic polyhydroxyl compounds having a hydroxyl number of about 100 to 800 and (ii) monovalent alcohols having a molecular weight of 32 to about 600, component (ii) being present in an amount of about 0.01 to 20% by weight, based on the total quantity of component (b).
Inventors:
Mayel, Frank
Mehesyu, Hans-Ernst
Cornellie, Wolfgang
Man, Matsukus
Mosquitoes Tsupusu, Manfuretsuto
Mehesyu, Hans-Ernst
Cornellie, Wolfgang
Man, Matsukus
Mosquitoes Tsupusu, Manfuretsuto
Application Number:
JP50090186A
Publication Date:
July 30, 1987
Filing Date:
January 25, 1986
Export Citation:
Assignee:
Bergberg Felbant Gesellschaft Mitt Beschlenktel Haftung
Bayer Actien Gezershyaft
Bayer Actien Gezershyaft
International Classes:
C08G18/28; C09K17/00; C09K8/508; C09K17/30; E02D3/12; E21D9/00; C09K103/00; (IPC1-7): C09K17/00
Attorney, Agent or Firm:
Aoyama Aoi