David D Singleton

US Patent:

6566565, May 20, 2003

Filed:

May 8, 2000

Appl. No.:

09/566460

Inventors:

Brendan Dermot Murray - Houston TX
David Michael Singleton - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C07C 2720

US Classification:

568909

Abstract:

The invention pertains to a process of making selectively branched alcohol compositions by oligomerizing a lower olefin feed. The lower olefin feed preferably comprises linear olefins having at least three carbon atoms.

US Patent:

6653514, Nov 25, 2003

Filed:

May 8, 2000

Appl. No.:

09/566461

Inventors:

Brendan Dermot Murray - Houston TX
David Michael Singleton - Houston TX
Zaida Diaz - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C07C 2720

US Classification:

568909, 585329, 585512, 585523, 585527, 585823

Abstract:

The invention pertains to a process of removing phosphorous-containing impurities and preferably also dienes, from an olefin stream using a sorbent selected from the group consisting of an acidic ion exchange resin, an acidic zeolite, an acidic alumina, a neutral alumina, and an activated carbon. The olefin stream preferably comprises primarily olefins having at least 6 carbon atoms.

US Patent:

7102038, Sep 5, 2006

Filed:

Aug 9, 2002

Appl. No.:

10/216522

Inventors:

Brendan Dermont Murray - Houston TX, US
Paul Benjerman Himelfarb - Houston TX, US
Zaida Diaz - Houston TX, US
David Michael Singleton - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

C07C 27/20
C07C 27/22

US Classification:

568909, 585512, 585328, 585820, 585823

Abstract:

A process for making a selectively branched alcohol composition contacting a lower olefin feed comprising linear olefins having at least 3 carbon atoms and a concentration of phosphorous-containing compounds with a sorbent comprising a metal or metal oxide on a support, thereby substantially reducing the concentration of phosphorous-containing compounds and producing a purified lower olefin feed. The purified lower olefin feed is skeletally isomerized and then treated to selectively hydrogenate dienes before hydroformylation to produce selectively branched alcohols.

US Patent:

7781390, Aug 24, 2010

Filed:

May 15, 2007

Appl. No.:

11/748976

Inventors:

David M. Singleton - Houston TX, US
Louis Kravetz - Houston TX, US
Brendan Dermot Murray - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

C11D 17/00

US Classification:

510424, 510425, 510426, 510427, 510429, 510492

Abstract:

There is provided a new branched primary alcohol composition and the sulfates thereof exhibiting good cold water detergency and biodegradability. The branched primary alcohol composition has an average number of branches per chain of at least 0. 7, having at least 8 carbon atoms and containing both methyl and ethyl branches. The primary alcohol composition may also contain less than 0. 5 atom % of quaternary carbon atoms, and a significant number ethyl branches, terminal isopropyl branches, and branching at the Cposition relative to the hydroxyl carbon. The process for its manufacture is by skeletally isomerizing an olefin feed having at least 7 carbon atoms followed by conversion to an alcohol, as by way of hydroformylation, and ultimately, sulfation to obtain a detergent surfactant. Useful catalysts include the zeolites having at least one channel with a crystallographic free diameter along the x and/or y planes of the [001] view ranging from greater than 4. 2 Å and less than 7 Å but allows one to skeletally isomerize the olefin to produce a variety of branches, while retaining ready biodegradability and good cold water detergency.

US Patent:

7871973, Jan 18, 2011

Filed:

Sep 6, 2000

Appl. No.:

09/655964

Inventors:

David M. Singleton - Houston TX, US
Louis Kravetz - Houston TX, US
Brendan Dermot Murray - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

C11D 17/00

US Classification:

510424, 510425, 510426, 510427, 510428

Abstract:

There is provided a new branched primary alcohol composition and the sulfates thereof exhibiting good cold water detergency and biodegradability. The branched primary alcohol composition has an average number of branches per chain of at least 0. 7, having at least 8 carbon atoms and containing both methyl and ethyl branches. The primary alcohol composition may also contain less than 0. 5 atom % of quaternary carbon atoms, and a significant number ethyl branches, terminal isopropyl branches, and branching at the Cposition relative to the hydroxyl carbon. The process for its manufacture is by skeletally isomerizing an olefin feed having at least 7 carbon atoms followed by conversion to an alcohol, as by way of hydroformylation, and ultimately, sulfation to obtain a detergent surfactant. Useful catalysts include the zeolites having at least one channel with a crystallographic free diameter along the x and/or y planes of the [001] view ranging from greater than 4. 2 Å and less than 7 Å.

US Patent:

7888307, Feb 15, 2011

Filed:

May 12, 2008

Appl. No.:

12/119422

Inventors:

David M. Singleton - Houston TX, US
Louis Kravetz - Houston TX, US
Brendan Dermot Murray - Houston TX, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

C11D 17/00

US Classification:

510421, 510423, 510424, 510425, 510505, 510506

Abstract:

There is provided a new branched primary alcohol composition and the sulfates thereof exhibiting good cold water detergency and biodegradability. The branched primary alcohol composition has an average number of branches per chain of at least 0. 7, having at least 8 carbon atoms and containing both methyl and ethyl branches. The primary alcohol composition may also contain less than 0. 5 atom % of quaternary carbon atoms, and a significant number ethyl branches, terminal isopropyl branches, and branching at the Cposition relative to the hydroxyl carbon. The process for its manufacture is by skeletally isomerizing an olefin feed having at least 7 carbon atoms followed by conversion to an alcohol, as by way of hydroformylation, and ultimately, sulfation to obtain a detergent surfactant. Useful catalysts include the zeolites having at least one channel with a crystallographic free diameter along the x and/or y planes of the [001] view ranging from greater than 4. 2 Å and less than 7 Å, but allows one to skeletally isomerize the olefin to produce a variety of branches, while retaining ready biodegradability and good cold water detergency.

US Patent:

46380841, Jan 20, 1987

Filed:

Sep 12, 1985

Appl. No.:

6/775077

Inventors:

David M. Singleton - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C07C 67343

US Classification:

560202

Abstract:

A process is disclosed for dimerizing lower alkyl acrylates or lower alkyl methacrylates utilizing a bis(ethylene) rhodium tetrafluoroborate catalyst.

US Patent:

54751594, Dec 12, 1995

Filed:

Nov 7, 1994

Appl. No.:

8/335018

Inventors:

David M. Singleton - Houston TX
Brendan D. Murray - Houston TX

Assignee:

Shell Oil Company - Houston TX

International Classification:

C07C 29136
C07C 29141

US Classification:

568864

Abstract:

This invention relates to a process for the direct hydrogenation of methyl esters which comprises contacting and reacting one or more detergent range methyl esters with hydrogen under predominantly liquid phase hydrogenation conditions in the presence of a catalyst comprising a copper compound, a zinc compound, and at least one compound selected from the group consisting of aluminum, zirconium, magnesium, a rare earth and mixtures thereof.