MUDDY WATER STABILIZER AND MUDDY WATER FOR DRILLING

PROBLEM TO BE SOLVED: To provide a muddy water stabilizer for drilling excellent in dispersion stability of clay, having sufficient freeness even if the contents of the clay is small, and little deteriorate of the filtrability with time and by mixing of earth or sand. SOLUTION: This muddy water stab...

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Bibliographische Detailangaben
Hauptverfasser:	KAWAMATA TAIGA, KOMIYA KAORU
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES SHAFTS TUNNELS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a muddy water stabilizer for drilling excellent in dispersion stability of clay, having sufficient freeness even if the contents of the clay is small, and little deteriorate of the filtrability with time and by mixing of earth or sand. SOLUTION: This muddy water stabilizer comprises a urethane compound represented by the general formulae: X-(A -O)a-(C=O)-NH-R -[-NH-(C=O)-(O-A ) a-X]m (1), R - -O-(A -O)b-[-(C=O)-NH-R -NH-(C=O)-(O-A )c]p -O-(C=O)-NH-R }n (2), and R - -O-(A -O)b-(C=O)-NH-R -NH-(C=O)-[(O-A )c-O-(C=O)-NH-R -NH-(C =O)-]q -(O-A )d-X}n (3), and its 0.5% aqueous solution has a cloud point of not lower than 50 deg.C.