Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1989-11-21
1991-12-03
Dixon, Jr., William R.
Compositions
Water-softening or purifying or scale-inhibiting agents
252523, 252541, 25217425, 252140, 252155, 252128, 252129, 252130, 252131, C11D 310
Patent
active
050698117
ABSTRACT:
Improved compositions for the sulphation-removing cleaning of lithoidal surfaces of prevailingly carbonatic nature, or of layers of such nature on different materials, comprising a mixture of an anion-exchange material (e.g., an anion-exchange resin) with an aqueous solution of ammonium carbonate and/or bicarbonate, and a filler selected from the group consisting of powders and/or fibrils of hydrophilic materials.
REFERENCES:
patent: 3966432 (1976-06-01), Rayner
patent: 4431559 (1984-02-01), Ulrich
patent: 4561993 (1985-12-01), Choy et al.
patent: 4643840 (1987-02-01), Brocklehurst et al.
patent: 4686064 (1987-08-01), Pizzigoni et al.
patent: 4686065 (1987-08-01), Bliznik et al.
Parrini Paolo
Pizzigoni Giuseppe
Dixon Jr. William R.
Klemanski Helene
Larac S.p.A.
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