Porous shaped bodies, and method and apparatus for the productio

Details Porous shaped bodies, and method and apparatus for the productio Porous shaped bodies, and method and apparatus for the productio

1984-07-23

1987-05-19

Anderson, Philip

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050023, 210651, 264 41, 264178R, 425 67, 425817C, C08J 928, B01D 1300, B01D 1301, B01D 1304

Patent

active

046666079

ABSTRACT:
Porous shaped bodies are disclosed, and an apparatus and method of their production by extruding a homogeneous, single-phase liquid mixture of polymer and mixing partner liquid at the temperature of mixture preparation through a nozzle downwardly with a linear velocity v.sub.1 into a cooling liquid that dissolves the polymer insubstantially or not at all at the cooling temperature, the cooling liquid being provided from entry of the extruded mixture until at least the point of start of solidification thereof in a substantially vertically arranged tubular zone surrounded by a wall, velocity v.sub.2 of cooling liquid in this zone being less than v.sub.1. The cooling liquid is preferably contained in a U-shaped tube and its level is controllable by dosing at entry and/or exit points.

REFERENCES:
patent: 3933653 (1976-01-01), Hashino et al.
patent: 3950257 (1976-04-01), Ishii et al.
patent: 3988245 (1976-10-01), Wang
patent: 4175153 (1979-11-01), Dobo et al.
patent: 4247498 (1981-01-01), Castro
The Random House College Dictionary Revised Edition, New York, Random House, Inc., .COPYRGT.1982, p. 196.
The American Heritage Dictionary Second College Edition, Boston, Mass., Houghton Mifflin Company, .COPYRGT.1982, p. 233.

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