Exxon Chemical Patents, Inc.

Exxon Research and Engineering Company

John J Jaruzelski

David J Martella

Frank J Chen

Essentially linear alkyl aromatics wherein the alkyl is attached to the aromatic ring at the .beta.-position are produced by the process wherein a linear hydrocarbon selected from the group consisting of linear .alpha.-olefins, linear .alpha.-substituted alkyl halides or linear .alpha.-substituted alkyl alcohol or mixtures of such olefins, halides or alcohols are reacted with an aromatic compound in the presence of an aprotic-polar cosolvent.

Preparation of linear alkyl aromatics

Additives for improving the low temperature flow properties and oxidative stability of hydrocarbon oils are disclosed, which comprise the alkylation of a phenol in the presence of a dipolar aprotic cosolvent to produce an essentially linear alkylated phenol which is condensated with a sulphurizing agent to produce the low temperature flow improver wherein:

Process for preparing alkyl phenol-sulfur condensate lubricating oil

Additives for improving the low temperature flow properties and oxidative stability of hydrocarbon oils are disclosed, which comprise the condensation reaction product of alkylated phenol and sulfurizing agent, wherein:

Alkyl phenol-sulfur condensates as fuel and lubricating oil additives

Additives of improving the low temperature flow properties and oxidative stability of hydrocarbon oils are disclosed, which comprise the alkylation of a phenol in the presence of a polar aprotic cosolvent to produce an essentially linear alkylated phenol which is condensed with an aldehyde to produce the low temperature flow improver wherein:

Method of preparing alkyl phenol-formaldehyde condensates

Additives for improving the low temperature flow properties of hydrocarbon oils are disclosed, which comprise the condensation reaction product of alkylated phenol and aldehyde, wherein:

Alkyl phenol-formaldehyde condensates as fuel additives

Alkyl phenol-formaldehyde condensates as lubricating oil additives

Highly effective antioxidants that are particularly useful in crankcase lubricating oil formulations of relatively low ash content are prepared by the condensation of phosphorodithioates of alkyl phenol sulfides with compounds having activated double bonds, particularly with styrene, alkyl styrenes, highly reactive olefins, vinyl esters and acrylate esters.

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Westfield, NJ, United States of America

John J Jaruzelski