METHOD OF PRODUCING DRILLING FLUID

FIELD: chemistry. ^ SUBSTANCE: drilling agent is obtained by treating lignosulphonate with sulphuric acid and alkaline metal bichromate to pH 1-1.5, followed by partial neutralisation with sodium hydroxide to pH 4-5 and drying. During treatment, elementary sulphur is fed into the reaction zone in am...

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Hauptverfasser:	TEPTEREVA GALINA ALEKSEEVNA, ASFANDIJAROV LUTFURAKHMAN KHABIBRAKHMANOVICH, KULJASHOVA IRINA AMIROVNA, AKCHURIN KHAMZJA ISKHAKOVICH, MUSTAFIN AKHAT GAZIZ'JANOVICH, BADIKOVA AL'BINA DARISOVNA, GIMAEV RAGIB NASRETDINOVICH, SHARIPOV TAGIR VIL'DANOVICH, KUDASHEVA FLORIDA KHUSAINOVNA
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP
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