Method for the Preparation of N-Oxyl Hindered Amine Inhibitors
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United States of America Patent
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Issued Date -
Oct 30, 2014
app pub date -
Dec 4, 2012
filing date -
Dec 19, 2011
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Abandoned
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Abstract
The present disclosure provides a composition and method for the preparation of N-oxyl hindered amine esters by contacting a compound of Formula (I), wherein R1 and R2 are independently an alkyl, with a compound of Formula (II), wherein R3 and R4 are independently an alkyl, and n is an integer from 3 to 10, in the presence of a catalyst and a solvent, wherein the catalyst comprises at least one of tin, lithium, zirconium, and hafnium.
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