Patent · US Expired

Method for trioxane isolation

US6200429A · kind A · utility

7Cited by

6References

5Claims

0Family size

Assignee

BASF SE

Inventors

Reinhard Freyhof · Bischofswerda, DE
Stefan Bitterlich · Dirmstein, DE
Hugues Vandenmersch · Monsheim, DE

Key dates

Filing date	Jan 11, 2000
Grant date	Mar 13, 2001
Priority date	—
Expiry date	Jan 11, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S159/28
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for isolating trioxane from an aqueous mixture which includes trioxane, water and formaldehyde, including removing trioxane from the mixture by pervaporation, and subjecting the mixture enriched in trioxane (permeate) to rectification to give trioxane and an azeotropic mixture of trioxane, water and formaldehyde.

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