Water-and oil-repellency imparting urethane oligomers comprising perfluoroalkyl moieties
US6803109B2 · kind B2 · utility
71Cited by
49References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2001 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Aug 13, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fluorochemical urethane compositions comprising one or more compounds or oligomers having at least on fluorine-containing repeatable unit and at least one fluorine-containing terminal group are described. The compositions are useful as coatings or incorporated as melt additives. The fluorochemical compositions impart oil and water repellency to the substrate. In other aspects, this invention relates to processes for imparting oil and water repellency characteristics to substrates and articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.