Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1987-06-15
1988-09-27
Wax, Robert A.
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
25238953, C02F 512
Patent
active
047740183
ABSTRACT:
This invention relates to an improved composition and method which inhibit the corrosion of and the formation of scale on metals present in an aqueous system. The composition comprises a water soluble copolymer having moieties derived from acrylic acid and from lower alkyl hydroxy acrylates, and a combination of a manganese compound and an aminoalkylenephosphonic acid derivative or its salts.
REFERENCES:
patent: 3976589 (1976-08-01), Mitchell
patent: 4324664 (1982-04-01), Snyder et al.
patent: 4324684 (1982-04-01), Geiger et al.
patent: 4640818 (1987-02-01), Grierson et al.
Brayden Mark K.
Chagnard, Jr. Harold A.
LeBlanc Thomas R.
The Dow Chemical Company
Wax Robert A.
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