Organic Component Contains Plural Carboxylic Acid, Ester, Or Salt Groups Attached Directly Or Indirectly To Nitrogen By Nonionic Bonding Patents (Class 507/241)
  • Amine adducts as corrosion inhibitors
    Patent number: 5427999
    Abstract: Amines which are compounds of the formula I: ##STR1## where R is a C.sub.6-20 hydrocarbon;X is --NR.sub.1 -- or --O--;each R.sub.1 is independently H or --[(CH.sub.2).sub.1-4 ]COOH or a C.sub.6-20 hydrocarbon;n is 1, 2 or 3;and which contains at least one (CH.sub.2).sub.1-4 COOH group; or salt thereof are useful in inhibiting corrosion of metals in a marine or freshwater environment e.g. in oil- and gas-field applications since they show relatively low toxicity to marine organisms.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: June 27, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Paul J. Clewlow, John A. Haslegrave, Niall Carruthers, Daniel S. Sullivan, III, Brent Bourland