# US 12,110,254 B2 · Concrete-forming composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,110,254 B2 - Document ID: US12110254B2 - Status: Granted - Kind: B2 - Application number: 17/298,709 - Filed: 2020-02-06 - Published: 2022-02-17 - Granted: 2024-10-08 - Earliest claimed: 2019-02-28 - Assignees: Dow Global Technologies LLC - Applicants: Dow Global Technologies LLC - Inventors: Robert Baumann; Jörn Breckwoldt; Alexandra Hild; Marc Schmitz - Web page: https://patentgrep.com/patent/US12110254B2 ## CPC - C04B 24/383: {Cellulose or derivatives thereof} - C04B 28/04: Portland cements - C04B 2111/343: {Crack resistant materials} - 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 A concrete-forming composition for producing a concrete article including: (a) at least one internal curing agent including a water-insoluble crosslinked cellulose ether wherein the water-insoluble crosslinked cellulose ether has a higher water adsorption capacity compared to typically used superabsorbent polymers and wherein the water-insoluble crosslinked cellulose ether can be successfully and efficiently used as a water-insoluble crosslinked cellulose either internal curing agent in concrete-forming compositions; and (b) a cementitious material; a process for making the above concrete-forming composition; and a concrete article made from the above concrete-forming composition with the objective of reducing autogenous shrinkage and crack formation in the resulting concrete article made from the above concrete-forming composition. ## Claims ### Claim 1 A concrete-forming composition for producing a concrete article comprising: (a) at least one internal curing agent including a water-insoluble crosslinked cellulose ether wherein the water-insoluble crosslinked cellulose ether has a water adsorption capacity of greater than or equal to 10 g/g as measured by the tea bag test method and a 1% aqueous viscosity of from 2 to 2,000 mPa·s and wherein the water-insoluble crosslinked cellulose ether can be successfully and efficiently used as a water-insoluble crosslinked cellulose ether internal curing agent in concrete formulations with an objective of reducing autogenous shrinkage and crack formation in the concrete; and (b) a cementitious material. ### Claim 2 (depends on 1) The composition of claim 1, wherein the at least one water-insoluble crosslinked cellulose ether internal curing agent comprises the reaction product of: (a) at least one cellulose ether selected from the group consisting of hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, methyl cellulose, hydroxyethyl cellulose and mixtures thereof; and (b) at least one crosslinker selected from the group consisting of 1,2-dichloroethane, 1.3-dichloropropane, dichlorodiethyl ether, diglycidyl ether, glycidyl methacrylate, epichlorohydrin, epibromohydrin, and mixtures thereof. ### Claim 3 (depends on 1) The composition of claim 1, wherein the cementitious material is Portland cement. ### Claim 4 (depends on 1) The composition of claim 1, wherein the concentration of the water-insoluble crosslinked cellulose ether internal curing agent is from 0.1 weight percent to 5 weight percent based on the weight of total compounds in the composition. ### Claim 5 (depends on 1) The composition of claim 1, wherein the concentration of the cementitious material is from 5 weight percent to 50 weight percent based on the weight of total compounds in the composition. ### Claim 6 (depends on 1) A concrete article comprising a dried fully reacted concrete-forming composition of claim 1. ### Claim 7 A process for making a concrete-forming composition comprising admixing: (a) at least one internal curing agent including a water-insoluble crosslinked cellulose ether wherein the water-insoluble crosslinked cellulose ether has a water adsorption capacity of greater than or equal to 10 g/g as measured by the tea bag test method and a 1% aqueous viscosity of from 2 to 2,000 mPa·s and wherein the water-insoluble crosslinked cellulose ether can be successfully and efficiently used as a water-insoluble crosslinked cellulose ether internal curing agent in concrete formulations with an objective of reducing autogenous shrinkage and crack formation in the concrete; and (b) a cementitious material. ### Claim 8 A process for making a concrete article comprising: (I) mixing: (a) at least one internal curing agent including a water-insoluble crosslinked cellulose ether wherein the water-insoluble crosslinked cellulose ether has a water adsorption capacity of greater than or equal to 10 g/g as measured by the tea bag test method and a 1% aqueous viscosity of from 2 to 2,000 mPa·s and wherein the water-insoluble crosslinked cellulose ether can be successfully and efficiently used as a water-insoluble crosslinked cellulose ether internal curing agent in concrete formulations with an objective of reducing autogenous shrinkage and crack formation in the concrete; and (b) a cementitious material; wherein a concrete-forming composition is formed; and (II) drying the concrete-forming composition of (I).