Anti-filming surface-active agent
AssigneeChryso
InventorsSandrine Mateo, Pascal Boustingorry
Life of this patent
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Abstract
The invention relates to an anti-filming surface-active admixture for hydraulic binders, including at least one fatty alcohol and at least one oil, to the method for preparing same, and to a method for preparing a hydraulic binder composition suitable for the manufacture of screeds or concretes, comprising the step of adding, to the hydraulic binder composition, the admixture according to the invention in a metered amount of 0.1 to 5 wt % with respect to the weight of the hydraulic binder.
Claims24
A method of making a hydraulic binder with improved resistance to formation of a surface film, comprising adding a composition comprising at least one fatty alcohol and at least one oil as an anti-filming surface admixture to the hydraulic binder.
Anti-filming surface admixture for hydraulic binders comprising at least one fatty alcohol, at least one oil and a compound of formula (I)
- RO(AO)nH (I)
- wherein:
- R is a hydrogen atom or an alkyl group, linear or branched, comprising 1 to 7 carbon atoms;
- A is an alkylene, linear or branched, comprising 1 to 3 carbon atoms;
- n is an integer between 11 and 70.
A hydraulic binder-based composition comprising:
- a hydraulic binder;
- at least one fatty alcohol;
- and
- at least one oil.
Dependencies are inferred from the claim text.