Cooling process for polyester and/or polymide resins
US5817747A · kind A · utility
6Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Oct 16, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/48
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cooling process for polyester and/or polyamide resins downstream of solid-state polycondensation plants in which the cooling is carried out by passing the solid material through two types of equipment in series, of which one is a fluid-bed, the other is a solid/wall cooling equipment. The fluid bed equipment is fed with a stream of inert-gas coming from the solid-state polycondensation reactor, previously subjected to by-products purification, drying and cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.