Patent · US Expired

Production of polyamides by reactive distillation

US6358373B1 · kind B1 · utility

8Cited by

4References

9Claims

0Family size

Assignee

BASF SE

Inventors

Martin Leemann · Bensheim, DE
Volker Hildebrandt · Mannheim, DE
Heino Thiele · Ludwigshafen, DE
Stefan Espig · Schifferstadt, DE

Key dates

Filing date	Aug 23, 2000
Grant date	Mar 19, 2002
Priority date	—
Expiry date	Aug 23, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S203/06
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The preparation of polyamides, their oligomers or mixtures thereof, where appropriate with other reaction products, takes place by reacting amino nitrites (A) and, where appropriate, other polyamide-forming monomers and/or oligomers with water (D) in a reactive distillation, wherein the reaction product (P) is discharged from the bottom of the reactive distillation apparatus, and ammonia (N) which is produced and, where appropriate, other low molecular weight compounds which are produced, and water, are taken off overhead.

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