Amber polyester compositions and container articles produced therefrom
US6787589B2 · kind B2 · utility
26Cited by
23References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Nov 4, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This application discloses amber colored polyesters suitable for packaging food and beverages. The amber polyester compositions provide excellent blockage of UV and visible light over the wavelength ranges of from about 320-550 nm, rendering them suitable for packaging materials sensitive to ultraviolet and visible light over this wavelength range, particularly beer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.