Ultraviolet protected multi-layer structures of copolyester/polycarbonate blends
US6641920B2 · kind B2 · utility
4Cited by
42References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Feb 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31507
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is described an ultraviolet protected multi-layer structure comprising a layer produced from a copolyester/polycarbonate blend, and a protective UV absorbing compound-containing polycarbonate cap layer. Also described is a process for producing the multi-layer structures, and articles of manufacture produced from the multi-layer structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.