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US 12,448,329 B2Granted
Shrinkage reducer for mineral binder composition and its use
AssigneeSika Technology AG
InventorsGary Boon, Maxime Liard, Didier Lootens, Lolita Hauguel
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Abstract
An additive, in particular a shrinkage reducing agent, for mineral binder compositions including at least one super absorbent polymer SAP and at least one defoamer D. Further, a mineral binder composition including the additive, processes and methods for the mixing thereof, and to hardened articles obtainable therefrom.
Claims12
An admixture for mineral binder compositions, comprising at least one superabsorbent polymer SAP and at least one defoamer D,
- wherein the admixture does not comprise water,
- wherein the at least one defoamer D is selected from the group consisting of mineral oils, vegetable oils, or white oils which may comprise a wax and/or hydrophobic silica, silicones, which can be modified by alkoxylation or fluorination, alkyl esters of phosphoric or phosphonic acid, alkoxylated polyols, and alkoxylated fatty alcohols, and
- wherein the weight ratio of the at least one SAP to the at least one defoamer D is from 2:1-1:10.
Dependencies are inferred from the claim text.