Steven Gale Lockett

US Patent:

6551967, Apr 22, 2003

Filed:

Nov 20, 1998

Appl. No.:

09/197346

Inventors:

William Frank King - Novato CA
Curtis Bay Campbell - Hercules CA
Olivier Clement - Le Havre, FR
Jean-Louis Le Coent - Le Havre, FR
Steven Gale Lockett - San Rafael CA
Richard James Nelson - Pinole CA
Pierre Tequi - St. Romain de Colbosc, FR

Assignee:

Chevron Chemical S.A.

International Classification:

C10M13510

US Classification:

508391, 562115

Abstract:

Low overbased alkaline earth metal alkylaryl sulfonate having a Total Base Number of from about 2 to about 30, a dialkylate content of 0% to about 25% and a monoalkylate content of about 75% to about 90% or more, wherein the alkylaryl moiety is alkyltoluene or alkylbenzene in which the alkyl group is a C -C branched chain alkyl group derived from a propylene oligomer are useful as lubricating oil additives.

US Patent:

7405185, Jul 29, 2008

Filed:

Sep 26, 2003

Appl. No.:

10/672721

Inventors:

Robert H. Wollenberg - Orinda CA, US
Steven G. Lockett - San Rafael CA, US

Assignee:

Chevron Oronite Company LLC - San Ramon CA

International Classification:

C10M 159/22
C10M 159/24

US Classification:

508574, 508391

Abstract:

The present invention is directed to a novel process for making Group II metal overbased sulfurized alkylphenols, which process uses alkylene carbonate as both a source of carbon dioxide and alkylene glycol. In particular, under the reaction conditions using ethylene carbonate, carbonation time is reduced to about one quarter the time taught in the prior art to make Group II metal overbased sulfurized alkylphenol compositions. The present invention is also directed to a detergent-dispersant additive composition comprising a Group II metal overbased sulfurized alkylphenols, wherein the Group II metal overbased sulfurized alkylphenols have a reduced color as measured by ASTM Test No. D 6045 and an increased hydrolytic stability as measured by a modified ASTM Test No. 2619. The present invention is also directed to a process using ethylene carbonate or alkyl-substituted ethylene carbonate and water for delivering in situ equimolar quantities of ethylene glycol and carbon dioxide for use as reactants in chemical reactions.

US Patent:

20020091069, Jul 11, 2002

Filed:

Nov 26, 1996

Appl. No.:

08/696885

Inventors:

WILLIAM F. KING - NOVATO CA, US
RICHARD J. NELSON - PINOLE CA, US
STEVEN G. LOCKETT - SAN RAFAEL CA, US

International Classification:

C10M159/24

US Classification:

508/398000, 508/401000, 508/402000

Abstract:

A marine lubricating oil has a major amount of oil of lubricating viscosity; and a minor amount of an overbased, alkyl oxy benzene sulfonate having a TBN of at least 200. Between 40 wt. % and 80 wt. % of the alkyl group is attached at the 4-position and higher positions of the alkyl group. The oxy group can be hydroxy, methoxy, ethoxy, propoxy, butoxy, pentoxy, or hexoxy.

US Patent:

62042262, Mar 20, 2001

Filed:

Jun 3, 1999

Appl. No.:

9/324681

Inventors:

Jean-Louis Le Coent - Le Havre, FR
Olivier Pascal Marie Clement - Le Havre, FR
Amedee Guellec - Saint Sauveur d'Emalleville, FR
William Frank King - Novato CA
Richard J. Nelson - Pinole CA
Steven G. Lockett - San Rafael CA

Assignee:

Chevron Oronite S.A.
Chevron Oronite Co. LLC - San Francisco CA

International Classification:

C10M13510
C10M15924

US Classification:

508390

Abstract:

Mixture of alkyl phenyl sulfonates of alkaline earth metals having: (a) from 20% to 70% by weight of a linear mono alkyl phenyl sulfonate in which the linear mono alkyl substituent contains from 14 to 40 carbon atoms, preferably from 20 to 24 carbon atoms, and the mole % of the phenyl sulfonate radical fixed on position 1 or 2 of the linear alkyl chain is between 10% and 25%, preferably between 13% and 20%, and (b) from 30% to 80% by weight of a branched mono alkyl phenyl sulfonate in which the branched mono alkyl substituent contains from 14 to 18 carbon atoms.

US Patent:

57803986, Jul 14, 1998

Filed:

Jul 24, 1997

Appl. No.:

8/900061

Inventors:

William F. King - Novato CA
Richard J. Nelson - Pinole CA
Robert H. Wollenberg - Orinda CA
Steven G. Lockett - San Rafael CA

Assignee:

Chevron Chemical Company - San Ramon CA

International Classification:

C10M15924
C10M15922

US Classification:

508401

Abstract:

An additive useful in a marine lubricating oil is produced by reacting at elevated temperatures in the presence of at least one light hydrocarbon solvent and promoter: an alkyl oxy aromatic sulfonate; an alkaline earth metal base; carbon dioxide; and an acid component, such as carboxylic acid, an acid anhydride, an acid choride, or ester thereof. If the alkyl oxy aromatic sulfonate is in the acidic form, then the acid component is in the acidic form. If the alkyl oxy aromatic sulfonate is in the neutralized form, then the acid component is in the neutralized form. If the alkyl oxy aromatic sulfonate is in the overbased form, then the acid component is either in the acidic form or in the neutralized form.