Processes for removing impurities from textile materials
US4207072A · kind A · utility
18Cited by
10References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1975 |
| Grant date | Jun 10, 1980 |
| Priority date | — |
| Expiry date | Feb 21, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Water or organic solvent soluble impurities are removed from textile materials at a treatment zone by applying to the material a first liquid capable of dissolving the impurities, following which a second liquid immiscible with the first liquid is applied to the material to expel the first liquid and the dissolved impurities. The two liquids are then separated and the material is removed from the treatment zone and dried without further contact with the first liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.