Patent · US Expired

Preparation of pure N-vinyl-2-pyrrolidone

US5039817A · kind A · utility

7Cited by

1References

1Claims

0Family size

Assignee

BASF SE

Inventors

Ruprecht Kroker · Frankenthal (Pfalz), DE
Guenther Mueller · Flein, DE
Ernst Hofmann

Key dates

Filing date	May 24, 1990
Grant date	Aug 13, 1991
Priority date	—
Expiry date	May 24, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D207/267
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Pure N-vinyl-2-pyrrolidone is prepared by treating the crude N-vinyl-2-pyrrolidone with an acid ion exchanger.

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