DISPERSANT AND MANUFACTURING METHOD OF THE SAME

• Main Authors: NAKAMURA TAKUMA, NAKAMURA AKIHIKO, KANENAKA TSUBASA
• Format: Patent
• Language: English; Japanese
• Published: 20.02.2020
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

To provide a dispersant capable of giving thickening properties to each kind of dispersed bodies, and improving the property, regardless of use such as hydraulic setting composition, dye stuff, and oil field boring slurry, as effective use of lignin having high environmental load reduction effect as a biomass resource from the view-point of recent-year environmental load reduction.SOLUTION: A dispersant is a reactant of a lignin sulfonic acid compound and an aromatic water-soluble compound, and contains a lignin derivative which satisfies conditions (1) and (2). The condition (1): a B-type viscosity in a solution form having non-volatile components of 30% at 100°C is 30-100 mPa s. The condition (2): a surface tension in a solution form having non-volatile components of 10% at 100°C is 25-55 dyne/cm.SELECTED DRAWING: None 【課題】近年の環境負荷低減の観点から、バイオマス資源としての環境負荷低減効果の高いリグニンの有効利用として、水硬性組成物、染料、油田掘削用泥水など用途を問わず各種の被分散体に対し、増粘性を付与し、その性状を向上させ得る分散剤を提供すること。【解決手段】リグニンスルホン酸系化合物と芳香族系水溶性化合物との反応物であり、条件（１）及び（２）を満たすリグニン誘導体を含有する分散剤。条件（１）：１００℃での不揮発分が３０％の溶液形態におけるＢ型粘度が３０〜１００ｍＰａ・ｓである。条件（２）：１００℃での不揮発分が１０％の溶液形態における表面張力が２５〜５５ｄｙｎｅ／ｃｍである。【選択図】なし