Promoters for emulsion polymerization systems containing oxygen

Claim 1

IN THE EMULSION COPOLYMERIZATION OF A MONOMERIC MATERIAL COMPRISING A CONJUGATED DIENE HAVING NOT MORE THAN 6 CARBON ATOMS PER MOLECULE AND AN ORGANIC COMPOUND HAVING AN ACTIVE CH2=C<GROUP, WHILE DISPERSED IN AN AQUEOUS MEDIUM IN A REACTION SYSTEM CONTAINING A CATALYTIC COMPOSITION COMPRISING A TRISUBSTITUTED HYDROPEROXYMETHANE AND AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENE POLYAMINES AND IRON SALTS AND IN THE PRESENCE OF AT LEAST 0.1 MILLIMOLE FREE OXYGEN PER 100 GRAMS OF MONOMERS, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID REACTION SYSTEM BEFORE COPOLYMERIZATION A PROMOTER IN AN AMOUNT SUFFICIENT TO REDUCE THE INHIBITING EFFECT OF THE FREE OXYGEN BUT NOT SUFFICIENT TO INHIBIT THE COPOLYMERIZATION REACTION, SAID PROMOTER BEING SELECTED FROM THE GROUP CONSISTING OF QUINONE, HYDROQUINON, HYDROXYHYDROQUINON, RESORCINOL, PYROGALLOL, PHLOROGLUCINOL, AND METHYL, CHLORO- BROMOCARBOXY- AND SULFONIC-SUBSTITUTED DERIVATIVES THEREOF, IN WHICH NOT MORE THAN TWO OF THE SIAD SUBSTITUENTS, WHICH MAY BE ALIKE OR DIFFERENT, ARE PRESENT AND THEREAFTER CARRYING OUT THE COPOLYMERIZATION REACTION.