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:
Feb. 06, 1990
Filed:
Apr. 27, 1987
Donald A Johnson, Naperville, IL (US);
John E Hoots, Naperville, IL (US);
Dodd W Fong, Naperville, IL (US);
Guy A Crucil, Bloomingdale, IL (US);
Nalco Chemical Company, Naperville, IL (US);
Abstract
New zinc stabilizing polymers containing at least 5 mole percent of a monomer represented by the structure: ##STR1## wherein: R is independently, at each occurrence, chosen from H and lower (C.sub.1 -C.sub.4) alkyl groups; R' is a hydrocarbonaceous bridging group containing from 1-12 carbon atoms; X is chosen from --SO.sub.3 M, --OH, --COOM groups or mixtures thereof, M is hydrogen or some other cation species; and n ranges from 1-10, are described. Also, the use of these polymers in combination with zinc salts, and in further combination with phosphate salts, to inhibit corrosion of iron containing metals, and other metals, when these metals are exposed to industrial waters is demonstrated. Deposit control or scale inhibition on these metals exposed to industrial waters is also observed.