James C Chien

US Patent:

20010044562, Nov 22, 2001

Filed:

Mar 7, 2001

Appl. No.:

09/801315

Inventors:

William Heilman - Houston TX, US
I-Ching Chiu - Houston TX, US
James Chien - Walnut Creek CA, US

Assignee:

Pennzoil-Quaker State Company

International Classification:

C07C009/00

US Classification:

585/012000, 585/010000, 585/018000

Abstract:

A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.

US Patent:

20020193647, Dec 19, 2002

Filed:

May 22, 2002

Appl. No.:

10/154037

Inventors:

William Heilman - Houston TX, US
I-Ching Chiu - Houston TX, US
James Chien - Walnut Creek CA, US

Assignee:

Pennzoil-Quaker State Company

International Classification:

C07C009/00

US Classification:

585/012000, 585/010000, 585/018000

Abstract:

A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.

US Patent:

59627140, Oct 5, 1999

Filed:

Oct 2, 1996

Appl. No.:

8/725036

Inventors:

Laughlin Gerard McCullough - Longview TX
James C.W. Chien - Amherst MA
Juan Carlos Flores - Madrid - E28803, ES
Marvin D. Rausch - Amherst MA

International Classification:

C07F 710
C07F 1700

US Classification:

556 11

Abstract:

Disclosed is a monocyclopentadienyl metal compound that can polymerize polyolefins as part of a catalyst system. The monocyclopentadienyl compound can specifically be (C. sub. 5 H. sub. 4 CH. sub. 2 CH. sub. 2 NMe. sub. 2)TiCl. sub. 3.