Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1977-05-20
1979-01-16
Levin, Stanford M.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
20415923, 521 31, 526 72, 526207, 526209, 526213, 526913, C08F 248, C08F 218, C08F 220, C08F 800
Patent
active
041348150
ABSTRACT:
A process of manufacturing an amphoteric composite resin which process comprises first polymerizing a dispersion comprising two liquid phases wherein the first liquid phase comprises at least one monomer containing a basic group or a precursor or derivative thereof and a crosslinking agent, and the second liquid phase comprises at least one monomer containing an acidic group or a precursor or derivative thereof and a crosslinking agent, and wherein the monomers are not of opposite charge, the two liquid phases are substantially immiscible and partitioning of the monomers from one liquid phase to the other is minimal, to form a composite polymeric material; and second treating the composite polymeric material to convert any acidic group precursor or derivative and any basic group precursor or derivative to the free acid and free base respectively to form an amphoteric composite resin.
REFERENCES:
patent: 3957698 (1976-05-01), Hatch
patent: 3991017 (1976-11-01), Barrett et al.
Bolto Brian A.
Jackson Mervyn B.
Commonwealth Scientific and Industrial Research Organization
ICI Australia Limited
Levin Stanford M.
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