Patent · US Active

Application of coil tube evaporators for the production of polyamides

US8263733B2 · kind B2 · utility

1Cited by

4References

20Claims

0Family size

Assignee

BASF SE

Inventors

Robert A. Weiss · Summit, US
Jens Becker · Ludwigshafen am Rhein, DE

Key dates

Filing date	Oct 19, 2007
Grant date	Sep 11, 2012
Priority date	—
Expiry date	May 8, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G69/46
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Helical tube evaporators are used to concentrate aqueous extract solutions from the extraction of polyamides based on polyamide 6.A process for preparing polyamides based on polyamide 6 comprises the stages of

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