Treatment of aqueous systems
AssigneeCiba Geigy (UK) Limited
InventorsMalcolm John Smith, Peter Miles, Norman Richardson, Michael Anthony Finan
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Abstract
A method of inhibiting the precipitation of scale-forming salts of calcium, magnesium, barium and strontium from aqueous systems comprising adding to the aqueous system a telomeric compound of the formula: ##STR1## or salts thereof, wherein R.sup.11 is hydrogen, methyl or ethyl, R is hydrogen, 1-18C alkyl, 5-12C cycloalkyl, aryl, aralkyl, a residue of formula: ##STR2## wherein R.sup.11 has its previous significance and the sum of n + m is an integer of at most 100, or a residue --OX wherein X is hydrogen or 1-4C alkyl, and R.sup.1 is a residue --OX wherein X has its previous significance.
Claims5
A method of inhibiting the precipitation of the scale forming salts of calcium, magnesium, barium and strontium from aqueous systems comprising adding to the aqueous system a minor but effective scale-inhibiting amount of a product comprising a telomeric compound of the formula:
- ##STR7## or salts thereof, wherein R.sup.11 is hydrogen of a methyl or ethyl residue, R is a residue of formula:
- ##STR8## wherein R.sup.11 has its previous significance, and the sum of n + m is an integer of at most 100, and R.sup.1 is OH.
Dependencies are inferred from the claim text.