Process for the crystallization of polyester resins
US5714571A · kind A · utility
20Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1995 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Nov 20, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2067/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Aromatic polyester resins are continuously crystallized in a fluid bed crystallizer, where the fluidizing gas (nitrogen) enters at a temperature not lower than 195.degree. C. and the average residence time is higher than 5 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.