abstract |
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:n orn 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. |