Polymers of oxetane-spiro-cyclic polyethers

Details Polymers of oxetane-spiro-cyclic polyethers Polymers of oxetane-spiro-cyclic polyethers

1974-10-01

1979-02-20

Seccuro, Carman J.

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

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

528408, 526 4, 260338, 260327R, C08G 6502, C08G 6518

Patent

active

041408470

ABSTRACT:
Novel linear, branched and cyclic polymers of the repeating unit ##STR1## wherein R is ethylene or propylene bearing from zero to six methyl groups and m and n are lower integers and a process for utilizing said polymers to extract salts from solution are disclosed. For example, a monomer of the formula ##STR2## is contacted with traces of water in the presence of BF.sub.3.etherate to give a homopolymer consisting essentially of repeating units of the formula ##STR3## which extracts sodium salts from aqueous solution in a thermally reversible manner.

REFERENCES:
patent: 3763188 (1973-10-01), Krespan

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