Water soluble polymer containing dithiocarbamate functionalities
US6403726B1 · kind B1 · utility
24Cited by
14References
3Claims
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Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Oct 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dithiocarbamate functionalities to the wastewater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.