Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent
1979-03-29
1981-07-07
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
526277, 526278, 423 7, 525340, 525327, C08F23002, C08F 840, C01G 4300
Patent
active
042775655
ABSTRACT:
A macromolecular adsorbent is suitable for recovering heavy metal ions such as uranium ions from a dilute solution such as sea water and is a polymer having pendant groups having the formula ##STR1## wherein R.sup.1 represent a C.sub.1 -C.sub.8 divalent organic group; R.sup.2 and R.sup.3 respectively represents a C.sub.1 -C.sub.5 divalent organic group; p, q, r and l respectively represent 0 or 1; R.sub.f represents a C.sub.1 -C.sub.10 divalent perfluoro group; X.sup.1 and X.sup.2 respectively represent hydroxyl group or a hydroxyl convertible group or atom.
REFERENCES:
patent: 2764562 (1978-09-01), Zong
patent: 3678012 (1972-07-01), Matsuda et al.
patent: 4116890 (1956-09-01), Drake
Chemical Abstracts, vol. 87, 145198b, INIS-MF-3321.
Kato Masao
Oda Yoshio
Yamabe Masaaki
Asahi Glass Company Ltd.
Kulkosky Peter F.
Schofer Joseph L.
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