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US 6,916,369 B2Granted
Beneficiated water reducing compositions
AssigneeW. R. Grace & Co.-Conn.
InventorsByong-wa Chun, Benita Dair, Charlotte B. Porteneuve, Ara Avedis Jeknavorian, Josephine Ho-Wah Cheung, Lawrence R. Roberts
Life of this patent
Estimating the term…
Abstract
Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate superplasticizer, a corrosion inhibitor, a set retard, a set accelerator, etc.), or a mixture thereof. Exemplary methods for obtaining microbiologically or enzymatically converted sugar acids are also described herein.
Claims21
A composition, comprising:
- (A) a first component selected from the group consisting of a lignosulfonic acid or salt thereof and a gluconic acid or salt thereof in an amount no less than 5% and no greater than 90% based on dry weight solids in the composition;
- and (B) a second component comprising xylonic acid or salt thereof in an amount no less than 10% and no greater than 95% based on dry weight solids in the composition.
Dependencies are inferred from the claim text.