David D. Singleton
Engineers at Clinton Dr, Houston, TX

5780694, Jul 14, 1998

Nov 26, 1996

8/755827

David M. Singleton - Houston TX

Shell Oil Company - Houston TX

C07C 2720

568909

There is provided an alcohol composition obtained by dimerizing an olefin feed comprising C. sub. 6 -C. sub. 10 linear olefins to obtain C. sub. 12 -C. sub. 20 olefins, followed by conversion to alcohols, such as by hydroformylation. The composition has an average number of branches ranging from 0. 9 to 2. 0 per molecule. The linear olefin feed preferably comprises at least 85% of C. sub. 6 -C. sub. 8 -olefins. The primary alcohol compositions are then converted to anionic or nonionic surfactants, preferably sulfated or oxyalkylated or both. The sulfated compositions are biodegradable and possess good cold water detergency. The process for making the dimerized primary alcohol comprises dimerizing, in the presence of a homogeneous dimerization catalyst under dimerization conditions, an olefin feed comprising C. sub. 6 -C. sub. 10 olefins and preferably at least 85 weight % of linear olefins based on the weight of the olefin feed, to obtain a C. sub. 12 -C. sub. 20 ; optionally double bond isomerizing said C. sub. 12 -C. sub.

5536889, Jul 16, 1996

Sep 29, 1995

8/536718

Howard L. Fong - Sugar Land TX
David M. Singleton - Houston TX
Richard E. Robertson - Baton Rouge LA

Shell Oil Company - Houston TX

C07C 29149, C07C 31125

568885

This invention relates to a process for the two-stage hydrogenation of methyl esters which comprises: a) contacting and reacting one or more detergent range methyl esters with hydrogen under predominantly liquid phase hydrogenation conditions at a temperature of less than about 230. degree. C. , 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, to produce an alcohol product and a wax ester product, and b) contacting and reacting the wax ester product from step a) with hydrogen under predominantly liquid phase hydrogenation conditions at a temperature greater than about 220. degree. C. 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, to produce an alcohol product.

5849960, Dec 15, 1998

Nov 26, 1996

8/755843

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

Shell Oil Company - Houston TX

C07C 2720

568909

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 contianing 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 it the C. sub. 3 position 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. ANG. and less than 7. ANG.

6222077, Apr 24, 2001

Apr 2, 1998

9/054171

David M. Singleton - Houston TX

Shell Oil Company - Houston TX

C07C 2720, C11D 1402, C11D 322, C11D 1700, C09K 300

568909

There is provided an alcohol composition obtained by dimerizing an olefin feed comprising C. sub. 6 -C. sub. 10 linear olefins to obtain C. sub. 12 -C. sub. 20 olefins, followed by conversion to alcohols, such as by hydroformylation. The composition has an average number of branches ranging from 0. 9 to 2. 0 per molecule. The linear olefin feed preferably comprises at least 85% of C. sub. 6 -C. sub. 8 -olefins. The primary alcohol compositions are then converted to anionic or nonionic surfactants, preferably sulfated or oxyalkylated or both. The sulfated compositions are biodegradable and possess good cold water detergency. The process for making the dimerized primary alcohol comprises dimerizing, in the presence of a homogeneous dimerization catalyst under dimerization conditions, an olefin feed comprising C. sub. 6 -C. sub. 10 olefins and preferably at least 85 weight % of linear olefins based on the weight of the olefin feed, to obtain a C. sub. 12 -C. sub. 20 ; optionally double bond isomerizing said C. sub. 12 -C. sub.

7888307, Feb 15, 2011

May 12, 2008

12/119422

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

Shell Oil Company - Houston TX

C11D 17/00

510421, 510423, 510424, 510425, 510505, 510506

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.

6150322, Nov 21, 2000

Aug 12, 1998

9/133303

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

Shell Oil Company - Houston TX

C11D 1700

510426

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 contianing 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 C. sub. 3 position 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. ANG. and less than 7. ANG.

5608107, Mar 4, 1997

May 31, 1995

8/455369

Herbert E. Fried - Houston TX
David M. Singleton - Houston TX

Shell Oil Company - Houston TX

C07C 51235

562538

A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a resin-supported stable free radical nitroxide in the presence of a chlorine-containing oxidant and a solvent at a temperature in the range of from about 0. degree. C. to about 35. degree. C. and thereafter separating out the alkoxyalkanoic acid.

4192770, Mar 11, 1980

May 24, 1978

5/909234

David M. Singleton - Houston TX

Shell Oil Company - Houston TX

B01J 2938, B01J 2110, B01J 2102, C10G 1104

252414

A process for restoring selectivity of cracking catalysts which are contaminated with metals during cracking operations which comprises contacting the catalyst with at least one boron compound for a time sufficient to restore selectivity of the catalyst.

5475159, Dec 12, 1995

Nov 7, 1994

8/335018

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

Shell Oil Company - Houston TX

C07C 29136, C07C 29141

568864

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.