Nalco Chemical Company

Alfred W Oberhofer

Joseph C Drozd

James J Benko

John A Kelly

David A Grattan

Described are processes for improving and maintaining the performance of particulate and othe types of water-treatment solids, especially particulate ion exchange resins, filter media, and adsorbents which have become fouled with organic contaminants, micro-organisms, and wasteproducts thereof.

Treatment and prevention of fouled water treatment solids

The use of benzo and/or tolyltriazole alone or in combination with neutralizing and filming amines to reduce copper corrosion in boiler condensate systems by feeding the mixture into the main steamheaders.

Use of benzo and tolyltriazole as copper corrosion inhibitors for boiler

A cleaner-inhibitor and method of incorporating same into an automotive or diesel coolant system consisting of 2-4 fluid ounces per gallon of a cleaner whose basic components are:

Automotive cleaner plus inhibitor

A cleaner to be used preferably in conjunction with conventional glycol-type collants in automotive cooling systems and methods of using same. The present cleaners may be referred to as extended-life cleaners which may be added to the glycol coolant and are co-extensive with the life of said glycol. These cleaners operate to dissolve deposits, minimize corrosion damage, and dissolve organic degradation products, all of which cause heat transfer difficulties. The basic cleaner comprises:

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Downers Grove, IL, United States of America

Alfred W Oberhofer