METHODS FOR PREPARING POLYETHYLENE GLYCOL MALEIMIDE USING N-(2-HYDROXYETHYL) MALEIMIDE AS A STARTING MATERIAL
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United States of America Patent
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Issued Date -
Feb 14, 2013
app pub date -
Nov 2, 2010
filing date -
Nov 5, 2009
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Abandoned
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Abstract
The present invention relates generally to methods for preparing polyethylene glycol maleimide (“PEG-Mal”). More specifically, the present invention relates to methods for synthesizing desired molecular weight PEG-Mal by direct ethoxylation of N-(2-hydroxyethyl)maleimide under specific reaction conditions.
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