Patent ID: 8481657

Claim:
A method for increasing the monomer conversion in a redox initiated emulsion polymerization wherein said method comprises adding a composition comprising an effective amount of a substituted phenol to the polymerization medium, wherein the substituted phenol is selected from the group consisting of 2-6-di-t-butyl para-cresol; 2,6-bis(1,1-dimethylethyl)-4-methylphenol; octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)proprionate; benzenepropionic acid, 3,5-bis((1,1-dimethylphenyl)-4hydroxyphenyl-C 13 -C 15 alkyl ester; IRGANOX 1520 (2,4-Bis[(octyl-thio)methyl]-o-cresol); IRGANOX 1010 (Pentaerythrittetrakis[3-(3,5-ditert-butyl-4-hydroxyphenyl)-propionate); IRGANOX 1076 (Octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate]); and mixtures thereof.