Patent · US Expired

Polymerization of olefins

US6407188B1 · kind B1 · utility

22Cited by

7References

13Claims

0Family size

Assignee

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

Inventors

Zhibin Guan · Irvine, US
Lin Wang · Hockessin, US

Key dates

Filing date	Sep 28, 2000
Grant date	Jun 18, 2002
Priority date	—
Expiry date	Oct 31, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2531/22
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A branched polyolefin, preferably a polyethylene, and containing branches with even and odd numbers of carbon atoms, may be made by oligomerizing ethylene to an &agr;-olefin using a selected iron containing catalyst, and then copolymerizing that &agr;-olefin with ethylene and one or more other added &agr;-olefins which have odd numbers of carbon atoms. The polymers are useful, for example, as molding resins.

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