Means for controlling the exothermic reaction of styrenic monomers with sulfonic acids
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United States of America Patent
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Sep 6, 2011
Grant Date -
Aug 10, 2006
app pub date -
Jan 31, 2006
filing date -
Feb 4, 2005
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Abstract
A method for inhibiting the premature polymerization of styrenic monomers is disclosed wherein the method comprises adding to said monomers a combination of: (A) at least one inhibitor that is a sulfonic acid compound in a concentration sufficient to initiate cationic polymerization of said styrenic monomers at any point of the manufacturing or purification process and cause a resulting temperature increase; and (B) at least one amine in a concentration sufficient to reduce said cationic polymerization and said temperature increase; whereby an uncontrolled exothermic reaction between said sulfonic acid compound and said styrenic monomers will be prevented.
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