Synthesis of caprolactam from lysine
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United States of America Patent
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Jul 15, 2008
Grant Date -
Jun 28, 2007
app pub date -
Dec 7, 2006
filing date -
Jun 10, 2004
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Abstract
In various embodiments, the present invention can involve a method of synthesizing .alpha.-amino-.epsilon.-caprolactam. The method can comprise heating a salt of L-lysine in a solvent comprising an alcohol. In other embodiments, the present invention can involve methods for synthesizing .epsilon.-caprolactam. The methods can comprise heating a salt of L-lysine in a solvent comprising an alcohol and deaminating the reaction product. In various embodiments, the invention can include methods of converting biomass into nylon 6. The methods can comprise heating L-lysine in a solvent comprising an alcohol to produce .alpha.-amino-.epsilon.-caprolactam, deaminating to produce .epsilon.-caprolactam and polymerizing into nylon 6, wherein the L-lysine is derived from the biomass. In other embodiments, the present invention can include methods of making nylon 6. The methods can comprise synthesizing .epsilon.-caprolactam and then polymerizing, wherein the .epsilon.-caprolactam is derived from L-lysine.
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