Patent · US Expired

Polymerization of olefins

US6174975A · kind A · utility

28Cited by

3References

35Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Lynda Kaye Johnson · Wilmington, US
Alison Margaret Anne Bennett · Wilmington, US
Lin Wang · Hockessin, US
Anju Parthasarathy · New Castle, US
Elisabeth Hauptman · Wilmington, US
Robert D. Simpson · Philadelphia, US
Jerald Feldman · Wilmington, US
Edward Bryan Coughlin · Amherst, US
Steven Dale Ittel · Wilmington, US

Key dates

Filing date	Jan 13, 1998
Grant date	Jan 16, 2001
Priority date	—
Expiry date	Jan 13, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2410/03
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Selected olefins such as ethylene and .alpha.-olefins are polymerized by nickel [II] complexes of certain monoanionic ligands. The polyolefins are useful in many applications such as molding resins, film, fibers and others. Also described are many novel nickel compounds and their precursors, as well a novel ligands.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.