Copolymer, process for its preparation and its use as a sorbent

Details Copolymer, process for its preparation and its use as a sorbent Copolymer, process for its preparation and its use as a sorbent

1984-06-22

1986-03-18

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 60, 526239, 526257, 526258, 526260, 526261, 526279, C08J 900

Patent

active

045769737

ABSTRACT:
The crosslinked, porous copolymer in the form of beads and containing 50 to 99.9% by weight of recurring units of a heterocyclic 5-membered ring compound which contains a polymerizable olefinic group and which has at least one protonizable nitrogen atom in the ring, 0.1 to 50% by weight of units of a crosslinking agent, 0 to 25% by weight of units of a polymerizable organoboron or organosilicon compound and, relative to 100% by weight of the sum of the abovementioned units, 5 to 350% by weight of units of an N-vinylamide of the general formula I CH.sub.2 .dbd.CH--N(R.sup.1)--C(R.sup.2).dbd.O wherein R.sup.1 denotes hydrogen, methyl or ethyl and R.sup.2 denotes hydrogen or C.sub.1 -C.sub.3 -alkyl, or several such N-vinylamides and 0 to 40% by weight of units of another polymerizable compound or several such compounds, is prepared by inverted suspension polymerization and is used, for example, as a sorbent for acid substances from solutions thereof, preferably aqueous solutions.

REFERENCES:
patent: 3817745 (1974-06-01), Copes et al.
patent: 4154910 (1979-05-01), Tauaka et al.
patent: 4221871 (1980-09-01), Meitzner et al.
patent: 4246362 (1981-01-01), Sasaki et al.
patent: 4256842 (1981-03-01), Sasaki et al.
patent: 4323702 (1982-04-01), Kawabata et al.

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