Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1990-05-10
1991-06-11
Hruskoci, Peter
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
210699, 252180, 252181, C02F 514
Patent
active
050230000
ABSTRACT:
Calcium carbonate scale is controlled by treating calcium carbonate containing waters with a predominantly phosphinate containing composition where has as its major ingredient more than 32 mole percent of a phosphinicosuccinic acid oligomer having the probable structural formula . ##STR1## M is H, Na, K, NH.sub.4, or mixtures thereof; and m and n are either 0 or a small whole number with proviso that either m or n is a small whole number and the sum of m plus n is greater than 2.
REFERENCES:
patent: 4088574 (1978-05-01), Quinlan
patent: 4088678 (1978-05-01), Matt et al.
patent: 4253969 (1981-03-01), Becker et al.
patent: 4372870 (1983-02-01), Snyder et al.
patent: 4913823 (1990-04-01), Lipinski et al.
Di Simone I. Sergio
Fair Barbara E.
Kneller James F.
Mazzani Gianfranco F.
Hruskoci Peter
Miller Robert A.
Nalco Chemical Company
Premo John G.
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