Anionic polymerization of lactams in an extruder with controlled output rate
US4067861A · kind A · utility
6Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1975 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Nov 3, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Anionic polymerization of lactams is carried out in an extruder into which at least one lactam, at least one catalyst and at least one activating agent are introduced and wherein the mixture of said substances is polymerized prior to being extruded through an extrusion die. The output rate of the polymerized substance is controlled by transfer means, such as a metering pump, arranged between the outlet of the body of the extruder and the extrusion die.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.