Exxon Chemical Patents, Inc.

Barbara Catherine Brooke

Robert Dryden Tack

Graham Jackson

Rachel Evelyn Kenward

Reaction products of long chain esters with amines improve the cold flow properties of oils.

Materials for use in oils and processes for their manufacture

Compounds of the formula I below are useful as additives in oleaginous compositions: ##STR1## wherein B represents an aromatic system, A represents a hydrocarbyl group, R.sup.1 and R.sup.2 are the same or are different and each independently is an aliphatic hydrocarbyl group containing 10-40 carbon atoms, provided that one of R.sup.1 and R.sup.2 may represent hydrogen; z is at least 1 and wherein the aromatic system carries at least one substituent group which is an activating group for the ring system or a derivative of an activating group.

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Berkshire, United Kingdom

Barbara Catherine Brooke