Patent · US Expired

Working up reaction mixtures obtained in addition reactions with acetylene or propyne

US5683555A · kind A · utility

1Cited by

7References

6Claims

0Family size

Assignee

BASF SE

Inventors

Marc Heider · Neustadt, DE
Michael Karcher · Dossenheim, DE
Martin Schmidt-Radde · Beindersheim, DE
Albrecht Dams · Monsheim, DE

Key dates

Filing date	Mar 11, 1996
Grant date	Nov 4, 1997
Priority date	—
Expiry date	Mar 11, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/18
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Reaction mixtures obtained in addition reactions of OH-- or NH-- carrying compounds with acetylene or propyne in the presence of alkali metal alcoholates or alkali metal amides are worked up by distilling off the vaporizable components from the reaction mixture in a thin-film evaporator. Before removal of the vaporizable components from the reaction mixture, a particularly defined polyether is added thereto.

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