Acrylic copolymer agents based on urethane for improving the workability of hydraulic binders, preparation method, binders containing same and uses thereof
AssigneeCoatex
InventorsYves Kensicher, Jean-Marc Suau
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Abstract
The invention relates to the technical field of mortars, concretes, and other compositions based on cement, and in particular to agents capable of modifying their rheological characteristics, in particular workability. Workability may be defined as the property of a hydraulic binder to remain workable during as long a time as possible. The invention relates to novel agents of the acrylic copolymer type having urethane functions for improving the workability of hydraulic binders, to a method of preparing such novel agents, to binders containing them, and to uses for them. Such agents have the advantageous property of not retarding the setting time.
Claims33
A novel workability agent for a hydraulic binder comprising a copolymer, said copolymer obtained by radical copolymerization of at least one alkoxy-polyalkylene glycol urethane ethylene monomer with at least one anionic monomer and at least one non-ionic monomer optionally in the presence of alkoxy-PEG acrylate or methacrylate and of one or more ethylene monomers having at least two polymerizable double bonds, wherein the at least one alkoxy-polyalkylene glycol urethane ethylene monomer is the reaction product of methoxy-polyethylene glycol with a polymerizable unsaturated isocyanate.
Dependencies are inferred from the claim text.