摘要:
The use, as agents for the control of water formed scale and/or water borne deposits, of low molecular weight polymers and/or phosphonates of the formula: or wherein Y is-CH 2 PO 3 X 2 ; X is H + , NH or alkali metal; n is 1 to 6; and when n is 1 to 3, x is 2 to 6; and when n is 4 to 6, x is 1 to 6.
摘要:
The instant invention is directed to a glassy crystalline phosphate product, comprising at least one alkali metal oxide and phosphorus pentoxide having a molar ratio of greater than about 1.5:1 to less than 2.0:1. The instant invention is also directed to a process for the production of a glassy crystalline phosphate product comprising at least one alkali metal oxide and phosphorus pentoxide having a molar ratio of greater than about 1.5:1 to less than 2.0:1, comprising the steps of:
(a) heating a mixture of at least one alkali metal salt and a source of phosphorus pentoxide until said mixture melts; and (b) quenching said melted mixture.
摘要:
Glassy polyphosphates are used as threshold scale inhibitors in strongly acid waters. The content of glassy polyphosphate is 0.1 to 500 mgl of water.