Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent
1976-06-18
1979-02-13
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
260885, 260886, 528 31, B01J 108, C02B 114, C02B 140
Patent
active
041394992
ABSTRACT:
A process of making an amphoteric polymeric composition which process comprises dispersing particles of an ion exchange resin comprising either weakly basic or weakly acidic ionogenic groups in a solution comprising one or more monomers containing an ionogenic group, or organic precursor thereof, of opposite charge to the ionogenic groups of the ion exchange resin particle, wherein the ion exchange resin particle and the monomer are not of opposite charge, and a crosslinking agent comprising two or more vinylic or allylic groups; secondly polymerizing the monomer to give a macroporous crosslinked polymer matrix; and thirdly treating the polymeric composition to convert any organic precursors to ionogenic groups to form an amphoteric polymeric composition.
REFERENCES:
patent: 3549562 (1970-12-01), Mindick
patent: 3637535 (1972-01-01), Corte et al.
patent: 3808158 (1974-04-01), Bolto
patent: 3875085 (1975-04-01), Botts
patent: 3957698 (1976-05-01), Hatch
patent: 3957699 (1976-05-01), Solomon et al.
Brown Jerry H.
Wade Keith O.
Diamond Shamrock Corporation
ICI Australia Limited
Kulkosky Peter F.
Schofer Joseph L.
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