| 摘要 |
<p>PURPOSE:To obtain the title composition for muddy water thickening stabilizer for civil engineering boring, glaze stabilizer, etc., consisting of a powdery mixture of water-soluble cellulose derivative having high viscosity and water-soluble cellulose derivative having low viscosity, capable of simply preparing and free from restriction also in use. CONSTITUTION:The aimed composition consisting of a powdery mixture of water-soluble cellulose derivative having high viscosity and water-soluble cellulose derivative having low viscosity blended at weight ratio of 20:80-80:20. Furthermore, viscosity of the water-soluble cellulose derivative having low viscosity measured in the conditions of 1% concentration, 30rpm and 25 deg.C using a BM type viscometer is preferably <=1/50 of viscosity of water-soluble cellulose derivative having high viscosity measured in same conditions as above.</p> |
