Process for manufacturing polyamides
US6995233B2 · kind B2 · utility
1Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2001 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Oct 3, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00186
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a continuous process for manufacturing polyamides. The polyamides are of the type obtained from diacids and diamines. The process comprises an operation of continuous mixing of a compound which is rich in amine end groups and a compound which is rich in acid end groups and a polycondensation operation using the mixture. The invention relates to the starting phase of such a process, during which an aqueous solution comprising a mixture of monomers in substantially stoichiometric proportions is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.