Abstract

The seeded semibatch emulsion terpolymerization of styrene–butadiene–acrylic acid is investigated in a pilot plant scale reactor of 151 L. The effect of the styrene–butadiene ratio (S/BD ratio), amount of tertiary-dodecyl mercaptan as chain transfer agent (CTA), and two temperature profiles on the kinetics of the process (solids content, styrene conversion, particle size, and acid partitioning), by-product formation (4-phenyl cyclohexane, 4-PCH, and 4-vinyl cyclohexane, 4-VCH) and the molar mass distribution of the sol and the fraction of gel are studied.

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