Pyroglutamic acid esters with improved biodegradability
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United States of America Patent
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Sep 27, 2016
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Apr 12, 2012
app pub date -
Dec 16, 2011
filing date -
Nov 12, 2005
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Abstract
A pyroglutamic acid ester of formula (1) in which A represents a C2 to C4 alkylene group; x represents a number from 1 to 100; R′ represents an aliphatic, cycloaliphatic or aromatic radical that contains at least one structural unit of formula 2, and; y represents a number from 1 to 100. The use of these pyroglutamic acid esters in quantities of 0.01 to 2% by weight for preventing the formation of gas hydrates in aqueous phases that are connected to a gaseous, liquid or solid organic phase.
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