Vertical sublimation apparatus
US7611548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2003 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Jul 24, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D7/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A vertical and a horizontal vacuum sublimation apparatus with high efficiency and processes thereof are provided, especially for the materials with high melting point and low vapor pressure. The vertical sublimation purification apparatus comprises a sublimation channel body, a material rack, a heating evaporation device, a condensation device, an incubating device, and a product scratching device. The horizontal sublimation purification apparatus comprises a sublimation channel body, a material carrier, a heating evaporation device, and two end pipes. The apparatuses of the present invention can be applied to the mass production of high purity chemicals, and are capable of sublimating and purifying OLED illumination layer materials including Alq3, NPB and CuPc, which have high melting temperature and low vapor pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.