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US 10,604,702 B2Granted
Sequential treatment with aqueous sulfonated aromatic polymer and aqueous polyethylene oxide for enhanced water retention
AssigneeDow Global Technologies LLC
InventorsWanglin Yu, Michael J. Radler, Sung-Yu Ku
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Abstract
Treat an aggregation of particulates with two different aqueous mixtures, first with an aqueous mixture containing a sulfonated aromatic polymer component and then with an aqueous mixture containing polyethylene oxide.
Claims9
A method for increasing a water holding capacity of aggregation particles comprising:
- applying a first aqueous mixture containing a sulfonated aromatic polymer component to the aggregation particles, wherein the sulfonated aromatic polymer component is unassociated with other components;
- and
- applying a second aqueous mixture containing polyethylene oxide to the aggregation particles,
- wherein the second aqueous mixture is applied to the aggregation particles after the first aqueous mixture is applied to the aggregation particles, wherein the first aqueous mixture is free of polyethylene oxide and the second aqueous mixture is free of the sulfonated aromatic polymer component, and wherein one of the aqueous mixtures comprises a fertilizer.
1 more element
Dependencies are inferred from the claim text.