The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 1979
Filed:
Jan. 24, 1978
Applicant:
Inventors:
Malcolm J Smith, Stockport, GB;
Peter Miles, Stockport, GB;
Norman Richardson, Middleton, GB;
Michael A Finan, Macclesfield, GB;
Assignee:
Ciba Geigy (UK) Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C02B / ;
U.S. Cl.
CPC ...
210 58 ; 252180 ; 252181 ; 2605 / ; 528271 ;
Abstract
A method of inhibiting the precipitation of scale-forming salts of calcium, magnesium, barium and strontium from aqueous systems which involves adding to the aqueous system a telomeric compound of the formula: ##STR1## and the salt forming derivatives thereof, wherein: R.sup.11 is H, CH.sub.3, C.sub.2 H.sub.5 ; R.sup.1 is --OX wherein X is alkyl of 1-4 carbon atoms or hydrogen; R is hydrogen, alkyl of 1-18 carbon atoms, cycloalkyl of 5-12 carbon atoms, phenyl or benzyl, and n is a positive integer of at most 100.