Polyamindoamine based metal ion control compound

Details Polyamindoamine based metal ion control compound Polyamindoamine based metal ion control compound

1984-07-02

1988-07-19

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525539, 528332, 528363, C08G 8300

Patent

active

047586354

ABSTRACT:
New derivatives of polyamidoamines which contain at least one phosphonic, alkylphosphonic, hydroxyalkyl, carboxyalkly, alkylsulfonic or salts of the acid groups as substituents on a nitrogen are useful as chelating and/or threshold agents for preventing precipitation of metal ions. The preferred agents contain phosphonic acid groups or their salts.

REFERENCES:
patent: 2599807 (1952-06-01), Bersworth
patent: 2609390 (1952-09-01), Bersworth
patent: 3331773 (1967-07-01), Gunderson et al.
patent: 3336221 (1967-08-01), Ralston
patent: 3674804 (1972-07-01), Redmore
patent: 4051110 (1977-09-01), Quinlan
"Toward a Better Understanding of Commercial Organophosphonates", Roderick A. Campbell, Proced. Int. Water Conf., Eng. Soc., West PA, 41, pp. 167-174, (1980).
"Scale and Deposit Control in Cooling Water Systems", Jeffrey R. Townsend, Karl W. Heiman, Proced. Int. Water Conf., Eng. Soc. West PA, 39, pp. 89-99, (1978).

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