Use of a selected legume starch in an industrial fluid

an industrial fluid includes a selected legume starch with a Brookfield viscosity of between 100 and 20 000 mPa.s, as component of the industrial fluid. The legume starch preferably also has a solubility in water of between 10 and 85%. The industrial fluid is particularly a fluid for use in borehole...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GRAUX JEAN-PIERRE, MENTINK LEON
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON DERIVATIVES THEREOF DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS POLISHES POLYSACCHARIDES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	an industrial fluid includes a selected legume starch with a Brookfield viscosity of between 100 and 20 000 mPa.s, as component of the industrial fluid. The legume starch preferably also has a solubility in water of between 10 and 85%. The industrial fluid is particularly a fluid for use in boreholes with a pH greater than 8.5 and which can be used at a temperature above 130° C. The invention further relates to a method for preparation of a legume starch, selected thus by the viscosity thereof and also several families of novel legume starches, characterized by particular ranges of viscosity and aqueous solubility.