Alkylene phosphonic acid scale inhibitor compositions

Details Alkylene phosphonic acid scale inhibitor compositions Alkylene phosphonic acid scale inhibitor compositions

1982-11-08

1985-09-10

Lieberman, Paul

Compositions

Water-softening or purifying or scale-inhibiting agents

Plant or organic material containing

252175, C02F 510

Patent

active

045405085

ABSTRACT:
Compositions comprising methylene phosphonic acid derivatives of piperazine or aminoethylpiperazine (AEP) in combination with certain phosphonic acid derivatives of aliphatic acids or, methylene phosphonic acid derivatives of ammonia, amines and polyamines. These provide a synergistic effect with respect to the threshold activity in preventing metal ion precipitation.

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Proc. Int. Water Conf., Eng. Soc. West PA, 41, pp. 167-174, (1980), "Toward a Better Understanding of Commercial Organophosphonates", Roderick A. Campbell.
Proc. Int. Water Conf., Eng. Soc. West PA, 39, pp. 89-99, (1978), "Scale and Deposit Control in Cooling Water Systems", Jeffrey R. Townsend, Karl W. Herman.
Hoechst Article, Title Page and pp. 4, 14, and 15.

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