System for purifying dye
US4802989A · kind A · utility
11Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1986 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Oct 29, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0096
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A system for purifying dye comprising a means for producing a dye solution and a means for treating the dye solution which captures metal ions in said dye solution by carrying out ion-exchange separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.