Method for increasing the ultra-violet light transmittance of ethylene glycol
US4289593A · kind A · utility
2Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1980 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Mar 5, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S204/901
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The ultraviolet light transmittance of ethylene glycol containing ultraviolet light absorbing impurities is increased by exposing the ethylene glycol to ultraviolet radiation at a wavelength of at least 220 nanometers from a controllable ultraviolet radiation emission source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.