PREPARATION OF WATER-REDUCING COPOLYMERS FOR CONCRETE
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United States of America Patent
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Issued Date -
Dec 12, 2002
app pub date -
Feb 20, 2001
filing date -
Feb 20, 2001
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Abandoned
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Abstract
Alkoxylated acrylate and methacrylate macromonomers are disclosed that are useful in the preparation of water-reducing additives for concrete, ultraviolet light-curable adhesives, and water-dispersed polyurethanes. The macromonomers are suitably prepared by alkoxylating a hydroxyalkylacrylate or hydroxyalkylmethacrylate in the presence of a DMC catalyst using the continuous addition of starter (CAOS) in order to prevent the formation of by-products during the fabrication of the macromonomer.
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