Aromatic sulfonic acids, amines, and nitrophenols in combination with nitroxyl radical-containing compounds or C-nitrosanilines as polymerization inhibitors
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United States of America Patent
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Apr 13, 2010
Grant Date -
Jun 8, 2006
app pub date -
Jun 28, 2005
filing date -
Dec 3, 2004
priority date (Note) -
Expired
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Abstract
Disclosed herein is a method for inhibiting and retarding the premature polymerization and the polymer growth of vinyl aromatic monomers wherein the method comprises adding to said monomers an effective amount of an inhibitor and retarder blend comprising: (A) at least one aromatic sulfonic acid; (B) at least one amine; (C) at least one nitrophenol; and (D) at least one member of the group consisting of nitroxy radical-containing compounds and nitrosoanilines.
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