Robert J Irwin

US Patent:

57446768, Apr 28, 1998

Filed:

Feb 26, 1996

Appl. No.:

8/606669

Inventors:

Kevin J. Theriot - Baton Rouge LA
Robert G. Irwin - Prairieville LA

International Classification:

C07C 208

US Classification:

585510

Abstract:

Alpha-olefin oligomers are produced by oligomerizing an alpha-olefin monomer with a catalyst system comprising boron trifluoride, a protic promoter, and a modifier which is (a) at least one 1,3-dioxolane, or (b) at least one 1,3-dioxane, or (c) a combination of (a) and (b). Use of these modifiers in the BF. sub. 3 -catalyzed oligomerization makes it possible to modify the promoted catalytic reaction so that product containing as much as 50% or more of dimer can be produced at high conversions, at modest reaction temperatures, and in short reaction periods.

US Patent:

53470435, Sep 13, 1994

Filed:

Dec 20, 1993

Appl. No.:

8/169261

Inventors:

Mahmood Sabahi - Baton Rouge LA
Robert G. Irwin - Prairieville LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C07C 6934
C07C 6938
C07C 67465
C07C 6700

US Classification:

560190

Abstract:

Dialkyl malonate/alkyl acrylate Michael addition product mixtures having at least three acceptor moieties in a substantial number of the molecules can be consistently prepared without the need for long reaction times or the use of a large excess of the acceptor when the reaction is effected by gradually adding one molar proportion of a dialkyl malonate to at least three molar proportions of an alkyl acrylate which has been preheated to 60. degree. -80. degree. C. in admixture with an initiator and a phase transfer catalyst. In a preferred embodiment, the preheated mixture is maintained at 60. degree. -80. degree. C. for at least one hour before the dialkyl malonate is added in order to increase the percentage of product composed of the heavier components.

US Patent:

56334206, May 27, 1997

Filed:

Sep 22, 1995

Appl. No.:

8/532953

Inventors:

Kevin J. Theriot - Baton Route LA
Robert G. Irwin - Prairieville LA

Assignee:

Amoco Corporation - Chicago IL

International Classification:

C07C 208

US Classification:

585525

Abstract:

Alpha-olefin oligomers are prepared by a process which comprises contacting an oligomerizable olefin monomer with a catalyst system comprising a catalytic amount of boron trifluoride, a protic promoter, and an organic modifier selected from the group consisting of phosphate, thiophosphate, phosphine oxide, and phosphine sulfide. The oligomerizable olefin monomer is a C. sub. 6 to C. sub. 20 linear olefin comprising at least 50 mole % alpha olefin.

US Patent:

59292970, Jul 27, 1999

Filed:

Sep 25, 1997

Appl. No.:

8/936410

Inventors:

Kevin J. Theriot - Baton Rouge LA
Robert G. Irwin - Prairieville LA

Assignee:

BP Amoco Corporation - Chicago IL

International Classification:

C07C 204
C07C 202

US Classification:

585525

Abstract:

Alpha-olefin oligomers are produced by oligomering alpha-olefin monomer with a catalyst system comprising boron trifluoride, a protic promoter, and a special type of modifier. The modifier is a compound that satisfies the following criteria: (a) it has at least one moiety in which a carbonyl group is directly bonded to a nitrogen atom which is in turn bonded to two separate carbon atoms, (b) it is devoid of any nitrogen atom other than a nitrogen atom that is either (i) directly bonded to two separate carbon atoms and to a carbonyl group or (ii) is triply bonded to a single carbon atom, and (c) it is devoid of any protonic functional substituent. These modifiers control the oligomer product distribution and provide higher percentages of lower oligomers, especially dimers.

US Patent:

56505485, Jul 22, 1997

Filed:

Jun 16, 1995

Appl. No.:

8/491459

Inventors:

Kevin J. Theriot - Baton Rouge LA
Robert G. Irwin - Prairieville LA

Assignee:

Amoco Corporation - Chicago IL

International Classification:

C07C 208

US Classification:

585525

Abstract:

Alpha-olefin oligomer is prepared by contacting an alpha-olefin monomer which contains from about 6 to about 20 carbon atoms with a catalyst system comprising boron trifluoride, a protic promoter, and an organic sulfone, sulfoxide, carbonate, thiocarbonate, or sulfonate. Oligomer containing as much as 50% or more of dimer can be produced at high conversions, at modest reaction temperatures, and in acceptably short reaction periods.