HYDRAULIC COMPOSITION DISPERSANT

• Main Authors: NAKAMURA TAKUMA, SADOHARA SHINA, NAKAMURA AKIHIKO, TAMURA SUMIO, KANENAKA TSUBASA
• Format: Patent
• Language: English; Japanese
• Published: 21.07.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

To provide a hydraulic composition dispersant that may improve the stability to light and temperature without inhibiting dispersion performance with respect to a dispersant including a polycarboxylic acid-based copolymer containing a hydrolytic monomer in a constitutional unit.SOLUTION: A hydraulic composition dispersant at least includes a polycarboxylic acid-based copolymer or salt thereof that is the copolymer comprising constitutional units each including an alkenyl group having two kinds of specific number of carbon atoms and unsaturated monocarboxylic acid ester-based constitutional units each having specific number of carbon atoms, and a component (B) composed of a compound including a thiol group.SELECTED DRAWING: None 【課題】構成単位に加水分解型の単量体を含むポリカルボン酸系共重合体を含む分散剤に対して、分散性能を阻害することなく、光・温度に対する安定性を向上し得る水硬性組成物用分散剤を提供すること。【解決手段】２種類の特定の炭素原子数を有するアルケニル基を有する構成単位と特定の炭素原子数を有する不飽和モノカルボン酸エステル系の構成単位とを含む共重合体であるポリカルボン酸系共重合体又はその塩と、成分（Ｂ）：チオール基を有する化合物と、を少なくとも含む水硬性組成物用分散剤。【選択図】なし