PROCESS FOR CONTROLLING PARTICLE MORPHOLOGY AND MOLECULAR WEIGHT DISTRIBUTION OF LATEX POLYMERS

摘要

Particle morphology and molecular weight distribution of latex polymers is controlled by a process wherein a primary polymerizable feed composition, (a) a crosslinker and (b) a chain transfer agent during at least a portion of the period of addition of said composition to the polymerization zone, is fed into a polymerization zone while simultaneously feeding a secondary polymerizable feed composition containing chain transfer agent to the primary polymerizable feed composition and thus continually varying the compositional content of the primary polymerizable feed composition.