Method for isolation of laurolactam from a laurolactam synthesis process stream
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United States of America Patent
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Mar 19, 2013
Grant Date -
May 26, 2011
app pub date -
Nov 22, 2010
filing date -
Nov 20, 2009
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Abstract
A process for purifying laurolactam by means of integrated connection of distillation and crystallization is provided. The crystallization is performed as a solution or melt crystallization. The process reduces thermal stress applied to the laurolactam stream and improved yields are obtained. Raw materials are recovered and recycled in the production sequence.
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