Water-soluble phenylenediamine compositions and methods for stabilizing ethylenically unsaturated compounds and monomers

Abstract

Compositions and methods for inhibiting polymerization of ethylenically unsaturated monomers are provided. The compositions include a water-soluble phenylenediamine composition.

1 .- 10 . (canceled) 
   
   
       11 . A composition resistant to polymerization comprising:
 (a) an ethylenically unsaturated monomer, and   (b) one or more water-soluble compounds of the following formula:   
     
       
         
         
             
             
         
       
       wherein at least one of R 1 , R 2 , and R 3  is 
     
     
       
         
         
             
             
         
       
       R 1 , R 2  and R 3  are independently selected from H, C 1 -C 18  alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), aryl, and 
     
     
       
         
         
             
             
         
       
       R 5  is selected from the group consisting of H, alkyl, hydroxyalkyl, —O—R 6 , —S—R 6 , —N—(R 7 )(R 8 ), and aryl; 
       Z comprises one or more substituents selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl, heterocyclo, —CN, —NO 2 , —O—R 6 , —S—R 6 , and —N(R 7 )(R 8 ), 
       R 6 , R 7  and R 8  are independently selected form the group consisting of hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, aryl and heterocyclo; and wherein 
       said composition is water-soluble. 
     
   
   
       12 . The composition of claim further comprising a solvent. 
   
   
       13 .- 21 . (canceled)