Process for crystallization of poly(ethylenenaphthalenedicarboxylate)
US5663290A · kind A · utility
14Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1995 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Jul 21, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/88
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel process has been developed for the crystallization of poly(ethylenenaphthalenedicarboxylate) (PEN) and its copolymers. The process comprises the step of maintaining the amount of water in said poly(ethylenenaphthalenedicarboxylate) below a critical moisture content ceiling throughout processing such that a separate drying step is not required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.