NYLON SALT SOLUTION PREPARATION PROCESSES WITH TRIM DIAMINE
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United States of America Patent
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Issued Date -
Mar 17, 2016
app pub date -
Apr 15, 2014
filing date -
May 1, 2013
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Abstract
Disclosed are nylon salt solution preparation processes including a trim diamine feed. The nylon salt solution is prepared by feeding a dicarboxylic acid monomer and a diamine monomer to a single continuous stirred tank reactor. The dicarboxylic acid is metered, based on weight, from a loss-in-weight feeder to the reactor. The nylon salt solution is formed continuously and has low variability from a target pH and/or a target salt solution concentration. The nylon salt solution is transferred directly to a storage tank, without further monomer addition, pH adjustment, or salt solution adjustment after exiting the continuous stirred tank reactor.
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