Patent · US Expired

Method for processing pTHF polymerization catalysts

US6713422B1 · kind B1 · utility

1Cited by

5References

9Claims

0Family size

Assignee

BASF SE

Inventors

Volkmar Menger · Neustadt, DE
Karsten Eller · Stockach, DE
Anton Meier · Birkenheide, DE
Michael Hesse · Westlake Village, US

Key dates

Filing date	Jul 17, 2001
Grant date	Mar 30, 2004
Priority date	—
Expiry date	Jul 17, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/584
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for working up at least partially deactivated polymerization catalysts for the polymerization or copolymerization of THF which are contaminated with the products of the polymerization or copolymerization of THF comprises(a) in a first step, cleaning the polymerization catalyst by treatment with steam at from 80 to 250° C. and a pressure of from 0.5 to 40 bar and, preferably,(b) in a second step, regenerating the clean polymerization catalyst.

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