Patent · US Active

Method of preparing ethylene polymers by controlled high pressure polymerization

US9732168B2 · kind B2 · utility

0Cited by

12References

7Claims

0Family size

Assignee

BASF SE

Inventors

Michael Roth · Herbstein, DE
Rudolf Pfaendner · Rimbach, DE
Gerhard Luft · Mühltal, DE
Frank Freidel · Erbach, DE

Key dates

Filing date	Jan 10, 2013
Grant date	Aug 15, 2017
Priority date	—
Expiry date	Feb 25, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F10/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a method for the radical polymerization or copolymerization of ethylene at high pressures using a hydroxylamine ester as radical initiator. The hydroxylamine esters according to the invention are suitable initiators for the high pressure polymerization of ethylene leading to high molecular weight polyethylenes with narrow molecular weight distributions (Poyldispersity Index PD=1, 2-4.5).

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