Daniel J Knowles

US Patent:

7880047, Feb 1, 2011

Filed:

May 6, 2008

Appl. No.:

12/116147

Inventors:

Daniel C. Knowles - Southbury CT, US
Jesus R. Fabian - Wethersfield CT, US
Vilen Vilan Kosover - Cheshire CT, US
Susan Ferrarotti - New Hartford CT, US
E. Brian Fox - Monroe CT, US
Frank DeBlase - Hopewell Junction CT, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

C07C 2/02

US Classification:

585523, 585502, 585520, 585521, 585522, 800802, 800809, 800820

Abstract:

The invention is directed to polyalphaolefins (PAOs) and processes for forming PAOs. In one embodiment, the invention is to a process for forming a PAO comprising polymerizing C-Cα-olefin monomers in the presence of hydrogen, a C-Csaturated hydrocarbon, e. g. , a C-Csaturated straight-chain hydrocarbon, and a catalyst system in a reaction vessel, wherein the C-Csaturated straight-chain hydrocarbon has about the same number of carbon atoms as the C-Cα-olefin monomers. The C-Csaturated straight-chain hydrocarbon optionally is derived from a crude PAO product formed by the process of the invention. The invention is also directed to reaction systems for performing the processes of the invention, to processes for controlling PAO viscosity based on residence time, and to the removal of spent catalyst using a solid adsorbent particles.

US Patent:

8080699, Dec 20, 2011

Filed:

Aug 28, 2009

Appl. No.:

12/549559

Inventors:

Daniel C. Knowles - Southbury CT, US
Jesus R. Fabian - Wethersfield CT, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

C07C 2/02
C07C 2/04

US Classification:

585517, 585510, 585520, 585522

Abstract:

A final polymer product is formed using a two-stage process and system. In the first stage, a catalyst system is used to polymerize an alpha-olefin monomer to form an effluent. In the second stage, additional alpha-olefin monomer is supplied and is polymerized in the presence of the effluent from the first stage. The second stage produces the final polymer product, which may have a lower molecular weight and viscosity than the polymer formed in the first stage. The final polymer product may be used as a base stock for lubricant compositions.

US Patent:

8389780, Mar 5, 2013

Filed:

Dec 17, 2010

Appl. No.:

12/928752

Inventors:

Daniel C. Knowles - Southbury CT, US
Jesus R. Fabian - Wethersfield CT, US
Vilan Kosover - Cheshire CT, US
Susan Ferrarotti - New Hartford CT, US
E. Brian Fox - Monroe CT, US
Frank DeBlase - Hopewell Junction NY, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

C07C 9/22
C10M 107/02

US Classification:

585 18, 585 10, 585 12, 508591

Abstract:

The invention is directed to polyalphaolefins (PAOs) and processes for forming PAOs. In one embodiment, the invention is to a process for forming a PAO comprising polymerizing C-Cα-olefin monomers in the presence of hydrogen, a C-Csaturated hydrocarbon, e. g. , a C-Csaturated straight-chain hydrocarbon, and a catalyst system in a reaction vessel, wherein the C-Csaturated straight-chain hydrocarbon has about the same number of carbon atoms as the C-Cα-olefin monomers. The C-Csaturated straight-chain hydrocarbon optionally is derived from a crude PAO product formed by the process of the invention. The invention is also directed to reaction systems for performing the processes of the invention, to processes for controlling PAO viscosity based on residence time, and to the removal of spent catalyst using a solid adsorbent particles.