Amide functional ultraviolet light absorbers for fluoropolymers
US6261676A · kind A · utility
21Cited by
16References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Aug 3, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31583
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ultraviolet light absorbing material that resists blooming and migration is made up of a fluoropolymer and an amide functional ultraviolet light absorbing compound, wherein the polymer and the amide functional ultraviolet light absorbing compound are hydrogen bonded to one another. Polymeric films that contain a polymeric matrix and the ultraviolet light absorbing material are useful as the top layer in multilayer constructions such as retroreflective sheetings and conformable marking sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.