DISPERSANT FOR CARBONATE-BLENDED CEMENT COMPOSITION

• Main Authors: FUKUOKA SHOTO, KANENAKA TSUBASA, NAKAMURA OGA
• Format: Patent
• Language: English; Japanese
• Published: 03.04.2024
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

To provide a dispersant capable of enhancing dispersibility of a carbonate-blended cement composition.SOLUTION: The present invention provides a dispersant for carbonate-blended cement compositions, such as calcium carbonate, comprising a polycarboxylic acid copolymer containing 1 to 99 wt.% of a composition unit (I) derived from a monomer represented by a general formula (1) and 1 to 99 wt.% of a composition unit (II) derived from a monomer represented by a general formula (2). It is preferable that an average particle size of the carbonate be 1.0 to 100 μm. It is preferable that a weight average molecular weight of the polycarboxylic acid copolymer be 5,000 to 100,000.SELECTED DRAWING: None 【課題】本発明は、炭酸塩配合セメント組成物の分散性を高めることのできる分散剤の提供を目的とする。【解決手段】本発明は、一般式（１）で表される単量体に由来する構成単位（Ｉ）を１～９９重量％、一般式（２）で表される単量体に由来する構成単位（ＩＩ）を１～９９重量％含む、ポリカルボン酸系共重合体を含有する、炭酸カルシウム等の炭酸塩配合セメント組成物用分散剤を提供する。炭酸塩の平均粒子径は、１．０～１００μｍであることが好ましい。ポリカルボン酸系共重合体の重量平均分子量は、５，０００～１００，０００であることが好ましい。TIFF2024046100000019.tif22170TIFF2024046100000020.tif21170【選択図】なし