ADDITIVE FOR HYDRAULIC COMPOSITION

• Main Authors: NISHIGAYA KASUMI, NAKAMURA AKIHIKO, INOUE KAZUHIKO, KANENAKA TSUBASA, SUZUKI HIROYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 28.11.2019
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED 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 an additive for hydraulic compositions that impart moderate thickening properties and flowing properties to hydraulic compositions, and that resists being separated and sedimented when mixed and stored before use.SOLUTION: An additive for hydraulic compositions contains carboxymethylated pulp with a degree of carboxymethyl substitution being 0.50 or less and a degree of cellulose I-type crystallization of being 50% or more, and a polycarboxylic acid-based water-reducing agent.SELECTED DRAWING: None 【課題】水硬性組成物に適度な増粘性と流動性とを付与することができ、かつ使用前に混合して保管する際に分離、沈降しにくい、水硬性組成物用添加剤を提供する。【解決手段】カルボキシメチル置換度が０．５０以下であり、かつ、セルロースＩ型の結晶化度が５０％以上であるカルボキシメチル化パルプと、ポリカルボン酸系の減水剤とを含有する水硬性組成物用添加剤。【選択図】なし