Method of manufacturing spherical polymer particles from polymer

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...

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106122, 106198, 528492, 528493, 528494, 528495, 528496, 528497, 528498, 528499, 528502, 521 64, C08J 316, C08J 928

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active

041105290

ABSTRACT:
The invention relates to a method of manufacturing spherical particles, either homogeneous or porous, from polymer solutions, wherein a polymer solution is dispersed or suspended in a liquid dispersing medium incapable of dissolving the polymer and immiscible with the polymer solvent, and the emulsion thus obtained is poured, while stirring, into an excess of a polymer-coagulating liquid which is miscible with the polymer solvent but immiscible with the dispersing medium, whereafter the two liquid phases are separated from each other and from the spherical polymer particles which are then isolated.

REFERENCES:
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patent: 2740723 (1956-04-01), Voris
patent: 2814570 (1957-11-01), Sloan
patent: 3669922 (1972-06-01), Bartsh et al.
patent: 3737401 (1973-06-01), Tsou et al.
patent: 3847886 (1974-11-01), Blunt
patent: 3923707 (1975-12-01), Berg et al.
patent: 3945978 (1976-03-01), Berg et al.

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