Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent
1993-03-02
1994-04-12
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
521 32, 521 33, 521 37, 526278, 526287, 5263171, 526346, 526347, 526909, B01J 3918, B01J 4108, C08F 836, C08J 520
Patent
active
053026233
ABSTRACT:
Cation-exchange resins are provided which have improved resistance to copolymer degradation caused by oxidizing agents like molecular oxygen. The resins are prepared by incorporating a para-substituted styrenic monomer having an oxidation-stabilizing moiety in a position para to a polymerizable vinyl moiety. These cation-exchange resins can be used in separation processes for longer periods of time without detrimental increases in bed pressure drops, loss of operating capacity, or leaching of organic contaminants.
REFERENCES:
patent: 2500149 (1950-03-01), Boyer
patent: 2631127 (1953-03-01), D'Alelio
patent: 2664801 (1954-01-01), Eisbein
patent: 2764564 (1956-09-01), McMaster et al.
patent: 3256250 (1966-06-01), Frilette
patent: 3266007 (1966-08-01), Sullivan
patent: 3342755 (1967-09-01), Calmon et al.
patent: 4192921 (1980-03-01), Dales
patent: 4224415 (1980-09-01), Meitzner et al.
patent: 4246386 (1981-01-01), Howell et al.
patent: 4269943 (1981-05-01), Costin
patent: 4283499 (1981-08-01), Howell
patent: 4382124 (1983-05-01), Meitzner et al.
patent: 4419245 (1983-12-01), Barrett et al.
patent: 4564644 (1986-01-01), Harris
R. M. Wheaton et al. "Ion Exchange" Kirk-Othmer Ency. Chem. Tech., pp. 871-899, vol. 11 (2nd Ed., 1966).
Calvin E. Schildknecht, Polymer Processes, Interscience Publishers, Inc., New York, Chapter III, 1956.
F. Helfferich, Ion Exchange, (McGraw-Hill, 1962) pp. 29-43.
Dhingra Yog R.
VanTol Paul R.
The Dow Chemical Company
Zitomer Fred
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