Grace Dearborn Inc.

W. R. Grace Co.-Conn.

Ronald L Oleka

Chih M Hwa

Dionisio G Cuisia

Brian E Clark

John Daly

High pressure boiler condensate returns are polished and softened with a macroreticular cation exchange resin, and the resin is regenerated with a readily ionizable organic acid salt of a relatively low volatility amine corrosion inhibitor.

Condensate polisher regenerant system

A method for inhibiting corrosion of metals which are in contact with an aqueous system comprising adding to the system, either alone or in combination with organic or metal containing water treatments, a water-soluble cationic alkyl-phosphonium salt in an amount effective to inhibit corrosion.

Use of cationic alkyl-phosphonium salts as corrosion inhibitors in open

A composition and method of inhibiting corrosion in boiler-steam condensate systems comprising adding to the system N,N-dihydrocarbylhydroxylamine and N-hydrocarbylhydroxylamine in amounts effective to inhibit corrosion.

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Oakville, Canada

Ronald L Oleka