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Exxon Research and Engineering Company

Exxonmobile Research and Engineering Company

Rebecca L Rucker

Dennis G Peiffer

Hsien-Chang Wang

Pamela Jean Wright

Lewis J Fetters

Joseph Anthony Sissano

Louise M Wheeler

Paul Joseph Berlowitz

Bruce R Cook

Graft copolymers having cationic units pendant to the backbone chain are disclosed. These polymers are prepared by reacting a polymer containing halogenated para-methylstyrene units in the chain, e.g., a brominated copolymer of isobutylene and para-methylstyrene, with an anionically polymerized polymer made using an organolithium initiator compound having the formula R R Z R &mdash;Li where R and R are alkyl radicals, R is a direct link or an organic radical and Z is nitrogen or phosphorous. Reaction of the anionically polymerized polymer having an R R Z R &mdash; end group with the halogenated polymer leads to graft polymers coupled by a quaternary ammonium or phosphonium groups.

Graft copolymers containing ionomer units

Graft copolymers having cationic units pendant to the backbone chain are disclosed. These polymers are prepared by reacting a polymer containing halogenated paramethylstyrene units in the chain, e.g., a brominated copolymer of isobutylene and para-methylstyrene, with an anionically polymerized polymer made using an organolithium initiator compound having the formula R.sub.1 R.sub.2 Z R.sub.3 --Li where R.sub.1 and R.sub.2 are alkyl radicals, R.sub.3 is a direct link or an organic radical and Z is nitrogen or phosphorous. Reaction of the anionically polymerized polymer having an R.sub.1 R.sub.2 Z R.sub.3 --end group with the halogenated polymer leads to graft polymers coupled by a quaternary ammonium or phosphonium groups.

The present invention is a method for controlling a process for producing a distillate fuel heavier than gasoline. The process includes several different fractions, streams, including alcohols, olefins, and acids. At least one of the streams is irradiated with IR radiation, allowing the determination of the concentrations of at least one of alcohols, olefins and acids. The temperature of the separator is then adjusted to change the concentrations to pre-determined values.

Use of infrared spectroscopy to produce high lubricity, high stability,

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Warren, NJ, United States of America

Rebecca L Rucker