Electrosynthesis process for making amine/aldehyde porous struct

Details Electrosynthesis process for making amine/aldehyde porous struct Electrosynthesis process for making amine/aldehyde porous struct

1975-10-02

1980-10-28

Edmundson, F. C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204 72, 204 73R, 204 78, C25D 1500, C25B 310

Patent

active

042305519

ABSTRACT:
The invention is a process for making porous amine/aldehyde structures or powders comprising solid approximately-spherical cross-linked particles of less than 10 microns, said process comprising electrolyzing aqueous solutions of urea-formaldehyde prepolymer, melamine-formaldehyde prepolymer or mixtures thereof under electrolysis conditions sufficient to initiate condensation polymerization and formation of said structures or powders. The structures are all broadly designated as open pore urea-formaldehyde structures (OPUF) even though, of course, the ones made from melamine and formaldehyde without urea will have no urea in them. If the reactor is stirred during polymerization powders consisting of primary spherical particles and small porous agglomerates, are formed.

REFERENCES:
patent: 3449228 (1969-06-01), Yurcheshen et al.
patent: 3846269 (1974-11-01), Martello et al.
patent: 3887442 (1975-06-01), Gilchrist
patent: 3965058 (1976-06-01), Yurcheshen et al.

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