Process for bead size control in vinyl aromatic suspension polym

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

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C08F 220

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active

045006920

ABSTRACT:
The production of polymer beads from vinyl aromatic monomers, using an inorganic phosphate aqueous suspension polymerization process is effected with the addition of 0.0001 to 0.004 percent by weight of a polystyrenesulfonate with the production of beads having a narrow bead size distribution. In addition to the improved bead size distribution, large beads can be produced which retain their sphericity.

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patent: 4169828 (1979-10-01), Wright
patent: 4352916 (1982-10-01), Tandoll

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