Betz Laboratories, Inc.

Betzdearborn, Inc.

Bruce E Wright

William L Witzig

Paul V Roling

Cato Russell McDaniel

Dwight K Reid

William S Carey

David R Forester

Alan E Goliaszewski

Carl E Weaver

Jeffrey H Peltier

David R Foresteer

W John Delaney

Methods are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of polyalkenylthiophosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthiophosphonic acid.

Methods for reducing fouling deposit formation in jet engines

Methods are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of polyalkenylthiophosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthio-phosphonic acid.

Methods and compositions are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods and compositions are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of (thio)phosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthiophosphonic acid.

Methods and compositions for reducing fouling deposit formation in jet

The present invention pertains to methods and compositions for inhibiting polymerization of hydrocarbons during processing and storage. The methods comprise adding an effective amount of a hydroxyalkylhydroxylamine compound to the hydrocarbon sought to be treated.

Methods for inhibiting polymerization of hydrocarbons utilizing a

Phosphorus derivatives of polyalkenylsuccinimides and methods of use of such derivatives as antifoulants in liquid hydrocarbonaceous mediums, such as crude oil, during processing at elevated temperatures are disclosed. The derivatives are formed via reaction of a polyalkenylsuccinimide intermediate with formaldehyde and a phosphorus compound having at least one acidic hydrogen P-H bond. The intermediate is first formed via reaction of polyalkenylsuccinic anhydride and polyamine.

Compositions of phosphorus derivatives of polyalkenylsuccinimides

Oxidative stability of gasoline mixtures is improved by adding to the gasoline a phenylenediamine compound (I) in combination with a strongly basic organoamine compound (II). The compound (II) may comprise alkyphenol-polyamine-formaldehyde Mannich reaction products, hydroxylamines, polyethylenepolyamines, and members of the group of piperazine, aminoalkyl substituted pipearazine and amino substituted alicyclic alkanes.

Methods for stabilizing gasoline mixtures

Phosphorus derivatives of polyalkenylsuccinimides and methods of use of such derivatives as antifoulants in liquid hydrocarbonaceous mediums, such as crude oil, during processing at elevated temperatures are disclosed. The derivatives are formed via reaction of a polyalkenylsuccinimide intermediate with formaldehyde and a phosphorus compound having at least one acidic hydrogen P--H bond. The intermediate is first formed via reaction of polyalkenylsuccinic anhydride and polyamine.

Phosphorus derivatives of polyalkenylsuccinimides and methods of use

This invention relates to a process for determining the fouling tendency of a crude petroleum oil feed, comprising the steps of:

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The Woodlands, TX, United States of America

Bruce E Wright