Dissolving barium sulfate scale with aqueous solutions of bicycl

Details Dissolving barium sulfate scale with aqueous solutions of bicycl Dissolving barium sulfate scale with aqueous solutions of bicycl

1978-10-16

1980-07-29

Padgett, Benjamin R.

Compositions

Leather or fur treating

166312, 166279, 252 80, 252 82, 210 58, 134 22R, C09K 300

Patent

active

042150000

ABSTRACT:
Barium sulfate scale is dissolved by contacting it with an aqueous solution of: a bicyclic macrocyclic polyether in which the intramolecular cavity or cript is preferentially receptive to the cations of alkaline earth metals, at least a catalytically effective proportion of an alkali metal salt of an organic acid, and enough dissolved alkaline inorganic alkali metal or ammonium compound to provide a solution pH of at least about 8.

REFERENCES:
patent: 3523582 (1970-08-01), Fulford
patent: 3531468 (1970-09-01), Park et al.
patent: 3660287 (1972-05-01), Quiattnni
patent: 3684720 (1972-08-01), Richardson
patent: 3793209 (1974-02-01), Thompson
patent: 4030548 (1977-06-01), Richardson et al.
"Tetrahedron Letters" No. 34 (1969), pp. 2889-2892.

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