US 4,391,981 AGranted

Thio bis-lactone compounds derived from n-octenyl succinic anhydride

AssigneeExxon Research & Engineering Co.

InventorsStanley J. Brois, Antonio Gutierrez

Life of this patent

Estimating the term…

Abstract

Lactone oxazoline reaction products of hydrocarbon substituted lactone carboxylic acids, for example, polybutyl lactone carboxylic acid, with 2,2-disubstituted-2-amino-1-alkanols, such as tris-(hydroxymethyl)aminomethane (THAM), and their derivatives are useful additives in oleaginous compositions, such as sludge dispersants for lubricating oil, or anti-rust agents for gasoline.

Claims2

Dependent claims

A compound of the formula ##STR24## wherein R is an n-pentyl group and n is 1 or 2.

Dependencies are inferred from the claim text.

Facts

Application: 06/287,136Filed 27 Jul 1981 · division
Priority: 24 Sep 1976
Granted: 5 Jul 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

C07D 307/33
Oxygen atoms: in position 2, the oxygen atom being in its keto or unsubstituted enol form
C07D 307/60
With hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals,…:…
C07D 309/30
With hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals,…:…
C10L 1/233
Containing nitrogen in a heterocyclic ring: containing nitrogen and oxygen in the ring, e.g. oxazoles

Family

Serial726,206Parent of this division · filed 24 Sep 1976
Serial806,326Parent of this division · filed 13 Jun 1977
Serial967,289Parent of this division · filed 7 Dec 1978
Serial167,481Parent of this division · filed 11 Jul 1980
US 4,302,395 AParent of this division · filed 24 Nov 1981
US 4,221,720 AParent of this division
US 4,167,514 AParent of this division
US 4,062,786 AParent of this division
US 4,391,981 AThis patent

From the US filing history. Foreign family members aren’t listed.

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