# US 2024/0199490 A1 · Additive for hydraulic compositions, and hydraulic composition using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0199490 A1 - Document ID: US20240199490A1 - Status: Published application - Kind: A1 - Application number: 18/553,270 - Filed: 2022-03-30 - Published: 2024-06-20 - Earliest claimed: 2021-03-31 - Assignees: Osaka Gas Co., Ltd. - Applicants: Osaka Gas Co., Ltd. - Inventors: Tomonari NIIMURA; Hiroki SAKAMOTO; Shota URANO - Web page: https://patentgrep.com/patent/US20240199490A1 ## CPC - C01B 32/225: Expansion; Exfoliation - C04B 22/02: Elements - C01B 32/05: Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30 - C04B 28/02: containing hydraulic cements other than calcium sulfates - C04B 40/0039: {Premixtures of ingredients} - C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C} - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE ## Abstract An additive for a hydraulic composition, comprising flaky carbon and an organic compound containing a hydrophilic group and a hydrophobic group with a high affinity for carbon is capable of efficiently improving the strength of a hydraulic composition. ## Claims ### Claim 1 An additive for a hydraulic composition, comprising flaky carbon and an organic compound containing a hydrophilic group and a hydrophobic group with a high affinity for carbon. ### Claim 2 (depends on 1) The additive for a hydraulic composition according to claim 1, further comprising water. ### Claim 3 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the hydrophilic group comprises at least one member selected from the group consisting of groups represented by formulas (1) to (6): wherein —OH in formula (1) represents a hydroxyl group; the oxygen atom in formula (2) represents an ether bond; formula (5) represents an acid anhydride group; R1 represents a divalent organic group; R2 represents a hydrogen atom or an alkyl group; X1 represents a hydrogen atom, an alkali metal, NH4, or organic ammonium; and X2 represents a hydrogen atom, an alkali metal, NH4, organic ammonium, or an alkyl group. ### Claim 4 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the hydrophilic group comprises at least one member selected from the group consisting of an alcoholic hydroxyl group, —SO3Na, —COONa, —COOCH3, and a polyoxyethylene group. ### Claim 5 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the hydrophobic group comprises at least one member selected from the group consisting of an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, and a polyoxyalkylene group having 3 or more carbon atoms. ### Claim 6 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the hydrophobic group comprises an aryl group having at least one oxygen atom attached thereto and/or an aryl group having two or more aromatic rings. ### Claim 7 (depends on 1) The additive for a hydraulic composition according to claim 1 wherein the organic compound containing a hydrophilic group and a hydrophobic group with a high affinity for carbon is at least one chemical admixture for concrete selected from the group consisting of air-entraining admixtures, water-reducing admixtures, hardening accelerators, air-entraining and water-reducing admixtures, high-range water-reducing admixtures, air-entraining and high-range water-reducing admixtures, and superplasticizers. ### Claim 8 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the flaky carbon has a carbon content of 95.0 mass % or more. ### Claim 9 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the flaky carbon has a size of 0.1 to 30.0 m. ### Claim 10 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the flaky carbon has a thickness of 0.335 to 100 nm. ### Claim 11 (depends on 1) The additive for a hydraulic composition according to claim 1, wherein the additive for a hydraulic composition comprises the organic compound containing a hydrophilic group and a hydrophobic group with a high affinity for carbon in an amount of 1 to 1000 parts by mass per 100 parts by mass of the flaky carbon. ### Claim 12 (depends on 1) A method for producing the additive for a hydraulic composition of claim 1, comprising subjecting at least one carbonaceous material dispersion that contains a carbonaceous material having a layered structure, a water-soluble compound containing a hydrophobic group with a high affinity for carbon and a hydrophilic group, and a solvent to pressure treatment at 30 MPa or more, wherein at least one treatment selected from the group consisting of the following (i) to (iii) is performed by the pressure treatment: (i) two or more carbonaceous material dispersions that are the at least one carbonaceous material dispersion are collided with each other; (ii) the carbonaceous material dispersion is collided with a metal or a ceramic material; and (iii) the carbonaceous material dispersion is passed through a space with a cross-sectional area of 1 cm2 or less, the solvent comprises water, and the content of the water is 70 mass % or more of the solvent. ### Claim 13 (depends on 1) A method for producing the additive for a hydraulic composition of claim 1, comprising: placing a composition that contains a carbonaceous material having a layered structure, a water-soluble compound containing a hydrophobic group with a high affinity for carbon and a hydrophilic group, and a solvent between a rotary plate configured to rotate and a plate disposed substantially parallel to the rotary plate; and applying shear to the carbonaceous material in the composition while adjusting the shortest distance between the rotary plate and the plate to 200 m or less, wherein the solvent comprises water, and the content of the water is 70 mass % or more of the solvent. ### Claim 14 (depends on 12) The production method according to claim 12, wherein part or all of the solvent is removed after the pressure treatment or the shear treatment. ### Claim 15 (depends on 1) A hydraulic composition comprising the additive for a hydraulic composition of claim 1 and a hydraulic component. ### Claim 16 (depends on 15) The hydraulic composition according to claim 15, wherein the content of the additive for a hydraulic composition is 0.01 to 10 part by mass per 100 parts by mass of the hydraulic component. ### Claim 17 (depends on 15) The hydraulic composition according to claim 15, which is a cement hydration product. ### Claim 18 (depends on 15) A method for producing the hydraulic composition of claim 15, comprising mixing a hydraulic powder material and the additive for a hydraulic composition. ### Claim 19 (depends on 18) The production method according to claim 18, wherein in the mixing step, a chemical admixture for concrete is further mixed.