Method of preparing spherical porous bead-type polymers

Details Method of preparing spherical porous bead-type polymers Method of preparing spherical porous bead-type polymers

1979-03-19

1980-10-21

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

260 296R, 260 296RB, 260 296XA, 260 296T, 521145, 521 56, 526201, 526202, 526203, 526207, 526208, 526209, 526217, C08F 220, C08J 900

Patent

active

042295475

ABSTRACT:
This invention relates to a new and improved quiescent polymerization process which produces spherical beads of polymer having excellent porosity and unusually high bulk density. The process comprises polymerizing discrete droplets of liquid monomer containing a monomer-soluble free radical type catalyst while suspended in an aqueous mucilage having plastic flow properties and in the presence of a nonionic surfactant having the proper Hydrophile-Lipophile Balance (HLB), such as, for example, sorbitan monooleate. The porous bead polymers have the advantage of providing for lower cost bulk shipping, better extrusion feed, and for easy monomer stripping.

REFERENCES:
patent: 3228919 (1966-01-01), Gatta et al.
patent: 3340243 (1967-09-01), Beer et al.
patent: 3423352 (1969-01-01), Levine et al.
patent: 3620988 (1971-11-01), Cohen
patent: 3706722 (1972-12-01), Nelson et al.
patent: 3907730 (1975-09-01), Jones

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