Patent · US Expired

Catalyst obtained from phosphinoalkyl-functionalized polystyrene and method for the production of .delta.-lactone

US6291390A · kind A · utility

1Cited by

3References

4Claims

0Family size

Assignee

Forschungszentrum Karlsruhe GmbH · DE

Inventors

Stephan Pitter · Jena, DE
Eckhard Dinjus · Leimersheim, DE
Nancy Holzhey · Kahla, DE

Key dates

Filing date	Apr 10, 2000
Grant date	Sep 18, 2001
Priority date	—
Expiry date	Apr 10, 2020

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2531/824
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to the reaction of 1,3-butadiene and carbon dioxide. The invention aims at providing a catalyst for said reaction, which can be easily recovered and does not contaminate the final product. The invention also relates to a method for producing .delta.-lactone. According to the invention, a phosphinoalkyl-functionalized polystyrene is used to produce such a catalyst. The catalyst can be obtained by reacting phosphinoalkyl-functionalized polystyrene with (.eta..sup.5 -cyclopentadienyl) (.eta..sup.3 -allyl)palladium. The catalyst is used in the method to produce .delta.-lactone.

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