Use of pyroglutamic acid esters as gas hydrate inhibitors with improved biodegradability
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United States of America Patent
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May 27, 2014
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Oct 31, 2006
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Nov 12, 2005
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Abstract
A method for preventing the formation of gas hydrates in an aqueous phase by adding esters of pyroglutamic acid in the quantities of from 0.01 to 2% by weight. The esters of pyroglutamic acid produced by esterifying at least one alcohols, comprising from 1 to 100 hydroxyl groups with pyroglutamic acid and/or glutamic acid, wherein the alcohol has no more than one ester group or no more than one carboxylic acid group.
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