US 6,686,434 B2 · Polymerization of ethylene

Abstract

Complexes of certain transition metals with certain phosphorous-nitrogen bidentate ligands are part of all of catalyst systems for the polymerization of ethylene. Under certain polymerization conditions novel, highly branched, homopolyethylenes may be produced.

Claims2

Dependent claims

A homopolyethylene which has a Mark-Houwink constant of about 1.0 or more when measured in 1,2,4-trichlorobenzene.

Dependencies are inferred from the claim text.

Facts

Application

10/134,137Filed 26 Apr 2002 · division

Priority

1 Apr 1999

Published

US 2002/0120081 A129 Aug 2002

Granted

3 Feb 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification3 codes

C08F 10/00
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double
C08F 110/02
Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: ethene
C08F
Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

Family

Application60/127,324Us provisional application · filed 1 Apr 1999

Application09/539,560Parent of this division · filed 31 Mar 2000

US 2002/0120081 A1Pre-grant publication · published 29 Aug 2002

US 6,423,794 B1Parent of this division

US 6,686,434 B2This patent

From the US filing history. Foreign family members aren’t listed.

Polymerization of ethylene

Life of this patent

Abstract

Claims2

Polymerization of ethylene

Life of this patent

Abstract

Claims2